The right keynote guest speakers are the ones whose hour changes something your organization can measure 90 days later, and the wrong ones cost you the fee, the travel, and every paid hour your audience spent sitting in the room. Most planners booking a guest keynote for a conference, symposium, seminar, company meeting or association event are doing it for the first time, and they judge the choice by a demo reel and a topic list. Dr. Noah St. John has spent 29 years coaching senior operators on why capable people hear good advice and don't act on it, and you can request his date and fee for your event before you read another word.
Planners booking keynote guest speakers usually buy the hour, when what they need is the 90 days after it.
That's the whole mistake, and it's an easy one to make.
The booking process pushes you toward it. You get a request from leadership: "We need a great speaker for the opening session." You search. You find a hundred speaker pages that all look alike. Big stage photos. A reel cut to music. A list of topics that covers leadership, change, resilience, and innovation. Testimonials that say "amazing" and "inspiring."
Every one of those pages is selling the hour.
And the hour is the easy part. Almost any professional speaker can hold a room for 60 minutes. The standing ovation, the buzz at lunch, the evaluation forms full of fives: those are table stakes, not results.
Here's the moment that tells you whether you booked well. It's about three weeks after the event. Someone on your leadership team asks, "So what changed?" If the honest answer is "people really liked it," you paid for entertainment. That can be fine. But it's rarely what the budget line was approved for.
This page is built for the planner who wants a better answer to that question. It starts with the money, because that's where your CFO starts. Then it gives you a checklist you can use on any speaker you're considering, including Dr. Noah. The mechanism behind why most talks fade comes after that, because it matters less than the money to anyone signing the contract.
A wrong guest keynote booking costs you four things at once: the fee, the travel, the paid hours of everyone in the room, and a flat audience that carries into every session after it.
Most planners only count the first one.
The fee is the number on the contract, and it's the one everybody argues about. It's also the smallest part of the real cost for any event with a decent-sized audience. That surprises people, so here's the math.
The Bureau of Labor Statistics' Employer Costs for Employee Compensation release for June 2026 put total compensation for private industry workers at an average of $46.89 per hour worked. For full-time workers the figure was $54.00.
Now run your own event through that.
A company meeting with 400 employees in a one-hour keynote: 400 times $46.89 is $18,756 in paid time. Use the full-time figure, which fits most conference and company-meeting audiences better, and it's 400 times $54.00, or $21,600.
That's one hour. Your senior people cost more than the average, so the real number for a leadership audience is higher.
So a $25,000 keynote delivered to 400 full-time employees isn't a $25,000 decision. It's closer to a $46,600 decision before anyone books a flight. The fee is barely more than half of it. The rest is your own people's time, and you pay it whether the speaker is great or forgettable.
Then there's what it took to get everyone into the room. The Events Industry Council and Oxford Economics' 2026 Global Economic Significance of Business Events study found business events drew 1.65 billion participants in 2025, with direct spending averaging US$785 per participant.
Apply that global average to the same 400-person event and you're looking at $314,000 of spending to put those people in seats. Your event may cost more or less. The point is the scale. The keynote is usually the one session where every one of those people is in the same room at the same time. It's the highest-leverage hour you bought.
The fourth cost doesn't show up on any invoice. A keynote sets the tone for the rest of the event. An opening session that lands flat, or lands as pure entertainment with nothing to use, leaves the room with nothing to carry into the breakouts. The working sessions start cold. People check their phones sooner.
Nobody can put an exact number on that. You can see it, though. It's the difference between breakouts where people keep referencing the opening talk and breakouts where nobody mentions it again.
Add those four together and the question changes. It stops being "Which speaker can we afford?" and becomes "Which speaker will make the whole event worth what it cost?" If that's the question you're asking now, send your event details for a fee quote and a short call to test fit.
A keynote speaker sets the theme for the whole event from the main stage, a guest speaker is any outside expert invited to speak in any slot, and a seminar speaker teaches a smaller group in a longer, more interactive session.
The terms overlap, which is why so many planners search for "keynote guest speakers" as one phrase. Here's the working difference.
A keynote speaker gives the defining talk of the event. Usually a general session, usually 45 to 60 minutes, usually to the whole audience at once. The job is to frame what the event is about and give everyone a shared idea to carry into the rest of the program.
A guest speaker is a broader label. It's anyone from outside your organization invited to speak. That could be the keynote, a luncheon talk, a panel slot, a breakout, or a short spot on a company call. Every keynote speaker you hire from outside is a guest speaker. Not every guest speaker is a keynote.
A seminar speaker teaches. The room is smaller, the session is longer, and the audience expects to work: exercises, discussion, application to their own situation. A seminar can run a couple of hours or a full day.
Why it matters for your booking: you're paying for a different job in each case. A keynote is about framing and a shared moment. A seminar is about skill and practice. A guest spot in a smaller slot is about expertise on one topic. Ask one person to do the wrong job and even a great speaker will look average.
If you want the fuller comparison of roles, noahstjohn.com has a separate guide on keynote speaker vs guest speaker. This page stays on the booking decision: who to hire, what to demand, and what it'll cost you.
Book one person as your keynote and seminar speaker when you want the main-stage idea to turn into practice the same day, because the follow-on session is where the behavior actually gets built.
This is one of the most underused options in event planning.
The standard setup is a keynote in the morning, then breakouts led by different people on different topics. The keynote gets everyone fired up about one idea. Then the breakouts move on to something else entirely, and the idea is gone by lunch.
The alternative: the keynote speaker opens the event for everyone, then runs a longer working session for a smaller group, usually the leadership layer or the team that owns the outcome you care about. The keynote names the problem. The seminar turns it into a specific behavior, with each person choosing what they'll do differently and how they'll track it.
There are three good reasons to do it this way.
Continuity. The seminar builds directly on the language the whole room just heard. Nobody has to translate one speaker's framework into another's.
The right audience for the deeper work. Your managers are the people who'll reinforce the behavior afterward. Giving them extra time with the material is where your return actually comes from.
Cost. Adding a working session to a keynote booking often costs less than booking a second outside expert. Ask about it in the first conversation rather than as an afterthought.
When not to do it: if your keynote is purely a celebration, an awards night or a milestone event, a seminar adds nothing. Nobody wants homework at a party.
Dr. Noah delivers both formats, from a 45- to 60-minute general session up to half-day workshops for leadership teams. If you're weighing that setup, talk through a keynote-plus-workshop format for your date.
A keynote speaker for symposium audiences has to respect expert listeners, lead with a described mechanism rather than a story arc, and give specialists something practical that isn't already in their own field's literature.
A symposium is a different room from a company meeting.
The audience is usually specialists: researchers, clinicians, engineers, academics, senior practitioners. They came for the substance of the other sessions. They're used to evaluating evidence. They notice immediately when someone's claims outrun their sources.
That changes what you should look for.
Mechanism over motivation. A symposium audience extends credit to a speaker who explains how something works, in terms specific enough to be wrong. A string of stories with an uplifting ending reads as filler to this crowd. Ask any candidate to describe, in two minutes, the mechanism their talk is built on. If you get adjectives instead of a process, keep looking.
Cited research, said plainly. The speaker should name the study, the author, and the year out loud, and be accurate about what it showed and what it didn't. Overclaiming research in front of researchers is the fastest way to lose the room.
A cross-disciplinary angle. The best symposium keynotes don't try to out-expert the experts. They bring something from outside the field that the field can use. For most expert audiences, that's the human side of their work: why smart people put off the hard conversation with a colleague, delay the decision, or don't speak up in the meeting when they see the problem.
Tight timing. Symposium agendas are dense. A speaker who runs over steals time from a colleague's session. Ask how they handle a shortened slot, because at a symposium, you'll probably need them to.
This is where Dr. Noah's approach tends to fit well. He leads with mechanism, cites the research by name, and is explicit about what his work doesn't address. For an academic or professional symposium, the Tame the Caveman in Your Brain™ talk works as a cross-disciplinary opener that doesn't compete with the technical program. You can ask about a symposium slot and the fee for your program.
Motivational guest speakers help when the goal is energy, morale, or a shared moment, and they don't help when the goal is a behavior change your organization will measure afterward.
There's nothing wrong with a motivational talk. It's just a specific product, and planners often buy it for the wrong job.
When motivational guest speakers are the right call:
When they're the wrong call:
Here's why pure motivation fades. It works on feeling, and feeling doesn't last. People leave energized. Then Monday comes, the inbox is full, and the old habits have years of practice behind them. The energy runs into the same wall it ran into before the event.
The memory side works against you too. Hermann Ebbinghaus's forgetting curve, successfully replicated by Jaap Murre and Joeri Dros in a 2015 paper in PLOS ONE, shows that most forgetting happens fast, within the first hours and days after learning, and then keeps going. A talk that gave people a feeling and nothing to do is fighting that curve with nothing on its side.
A talk that gives people one specific thing to do, triggered by a moment they'll hit on their next working day, has a better chance. Doing the thing is its own reminder.
So the honest test isn't "Is this speaker motivational?" It's "What will people do differently, and when will they first get the chance?" If a speaker can answer that, motivation is a bonus. If they can't, motivation is all you're getting.
Guest speaker cost covers far more than the hour on stage: the preparation, the customization, the speaker's reputation and demand, and the follow-through, and the fee only makes sense measured against the full cost of the room.
Fees for guest speakers vary enormously, from local experts who speak for little or nothing to celebrities whose fees run far higher than most event budgets. Most professional keynote speakers sit somewhere between those ends.
Dr. Noah's signature keynotes run $25,000 to $50,000, scaled to your event and audience.
That's stated here because you shouldn't have to sit through a discovery call to learn a speaker's price. Treat any speaker who won't give you at least a range with some caution.
Here's what a professional fee should cover, and what to ask about.
Preparation. A pre-event call with the person who owns the outcome, and time spent adapting the talk to your audience. This is where most of the value lives, and it's invisible on the day.
Customization. Your language, your examples, your specific problem. Not a new slide with your logo on it.
The delivery itself. The time on stage, and usually some time before and after with your leaders or VIPs.
Travel. Ask directly whether travel is included in the fee or billed separately, and what the travel terms are. Don't assume.
Extras. Workshops, a second session, a virtual follow-up, recordings, books for attendees. Ask what's included and what costs more. Get it in writing.
Now put the fee in context with the room math from earlier. For a 400-person audience, the paid time in the room ran $18,756 to $21,600 for a single hour. Once you see that, the difference between a $15,000 speaker and a $35,000 speaker is smaller than it looks. What matters is whether the hour produces anything. A cheap speaker whose talk changes nothing costs you the room's hours for nothing. A more expensive speaker whose talk moves one measurable behavior can pay back the whole event.
For a fuller breakdown of how fees are set, Dr. Noah's guide to keynote speaker fees walks through what to budget. When you're ready for a real number for your event, get a quote for your conference or meeting.
Demand six things from any guest keynote speaker before you sign: a pre-event call, one named behavior, real customization, a transparent fee, a clear answer on bureau versus direct, and an honest limit.
Use this list on every speaker you're considering. That includes Dr. Noah. If a speaker can't meet it, that tells you something useful before you've spent a dollar.
The speaker should insist on a call before the event, and not just with the event planner. They should want to talk to the person whose number is supposed to move: the head of sales, the COO, the association's executive director, the program chair.
Ask: "Who do you need to talk to before the event, and what will you ask them?" A speaker who needs nothing from you is delivering the same hour they delivered last week somewhere else.
Not "more engagement" or "a stronger culture." A specific action a specific group of people will do more often.
Examples: managers give direct feedback within a day instead of saving it for the review. Salespeople ask for the decision at the end of the meeting instead of sending a follow-up email. Team members raise a problem in the meeting where they first see it. Members of an association make the call they've been putting off.
Ask: "What's the one behavior your talk will change, and how would we see it?" If the answer is a list of feelings, you're looking at a motivational speaker.
Customization isn't your logo on the title slide. It's the speaker using your audience's actual situations as the examples, in your audience's language.
Ask: "Can you walk me through how you changed your talk for a recent client?" You want specifics: what they learned on the pre-event call and what they did differently because of it.
You should know the fee, or at least the range, before you invest hours in conversations. You should also know exactly what's included: preparation, travel terms, extra sessions, recordings, follow-up.
Ask: "What's your fee for an event like ours, and what does it include?" A clear answer is a good sign about how the rest of the engagement will go.
Ask whether you're booking through a speakers bureau or directly with the speaker's office, and what that means for the fee, the contract, and who you talk to. Both are legitimate. You just need to know which one you're in. More on this in the next section.
Ask: "What won't your talk do?" Speakers who can't name a limit are either inexperienced or overselling. Either one will lose a skeptical audience in the first ten minutes.
"What happens after?" Ask what reinforces the talk in the weeks following the event. A speaker with no view on that hasn't thought about your result.
"How should we measure it?" The speaker should help you pick a measure you already collect, with a 30-day and a 90-day read. If the result can't be seen in data you already track, it won't be seen at all.
That's the standard. If you'd like to put Dr. Noah through it, send your event details and ask your questions.
Booking through a speakers bureau gets you a curated shortlist and someone to manage logistics, while booking direct gets you straight to the speaker's own office, and either works if you ask the same questions of both.
First-time planners are often unsure which route to take. Here's the practical difference.
A speakers bureau represents many speakers. You tell them your event, audience, and budget. They send you options, handle contracts, and coordinate logistics. The bureau is typically paid a commission out of the speaker's fee. What you gain is choice and convenience, especially if you don't know who you want yet.
Booking direct means going straight to the speaker's own office. You talk with the people who work with the speaker every day. What you gain is a shorter line between you and the person who'll actually be on stage, which usually makes the pre-event conversation easier to arrange.
Neither route changes the checklist. Whoever you're talking to, ask for the pre-event call, the named behavior, the customization, the full fee and what it includes, and the honest limit.
One more point on bureaus. A good bureau agent will tell you when a speaker isn't right for your audience, even if it costs them the commission. If an agent pushes the same two or three names no matter what you describe, ask why. And if you already know which speaker you want, there's nothing wrong with contacting the speaker's own office first and asking how they prefer to be booked.
A few practical tips either way:
To book Dr. Noah directly, you can send your date and event details to his booking page.
Audiences go flat after a good talk because the part of the brain that treats social risk as danger votes against the new behavior the moment people are back at work, long before their reasoning catches up.
Here's the mechanism, now that the money is on the table.
Almost every behavior a business event wants to change carries some social exposure. Asking for the decision. Giving direct feedback. Pushing back in a meeting. Raising a problem early. Trying something new in front of colleagues who might judge it.
Dr. Noah calls the part of us that resists those moments the Caveman in your brain. For almost all of human history, being pushed out of the group was a survival problem. The brain learned to treat disapproval and rejection as danger, and to steer away from them fast.
That isn't just a figure of speech. In a 2003 study published in Science, Naomi Eisenberger, Matthew Lieberman, and Kipling Williams scanned people's brains while they were excluded from a simple virtual ball-tossing game. The anterior cingulate cortex, a region associated with the distress of physical pain, was more active during exclusion, and that activity tracked how distressed people said they felt.
So think about what happens after your keynote.
A manager heard a great talk about direct feedback. She agrees with every word. On Tuesday she's in a one-on-one with an underperformer. The moment to say the hard thing arrives. And the Caveman reads that moment as a threat to the relationship and quietly votes for waiting. By the time her reasoning weighs in, the meeting is over.
She didn't forget the talk. She wasn't unmotivated. A fast, old reflex beat a slow, new intention.
That's why "be braver" never works as a keynote message. You can't lecture a reflex away. What you can do is teach people to recognize the moment it fires and give them something short and specific to do in that moment. That's the core of Dr. Noah's signature talk, Tame the Caveman in Your Brain™.
The Invisible Brake™ is Dr. Noah's name for the subconscious pattern that holds capable people just below the level of exposure that feels safe, even when they know exactly what to do.
After 29 years of coaching senior operators, Dr. Noah kept meeting the same person. Trained. Experienced. Clear on what the situation called for. And somehow not doing it.
He calls the thing in the way the Invisible Brake™. It isn't laziness, and it isn't a character flaw. It's a protective mechanism doing its job with out-of-date information.
For an event planner, this explains a pattern you've probably seen. Your organization brings in a good speaker. The content is right. People agree with it. And three months later, the behavior hasn't moved.
That's because most event content assumes something is missing and adds more: more information, more inspiration, more frameworks. The Invisible Brake™ approach assumes something is in the way and removes it. When it's removed, the capability that was already there shows up on its own.
That's also why this is good news on the cost side. You're not buying new skills your people don't have. You're recovering capacity you've already paid for, in people you've already trained.
The practical tool Dr. Noah gives audiences for that moment is Afformations®, question-based self-talk he coined in 1997.
The research behind it's narrow and useful. In a 2010 study in Psychological Science, Ibrahim Senay, Dolores Albarracín, and Kenji Noguchi found that participants who prepared for a task by asking themselves whether they would do it solved more anagrams than those who told themselves they would. The researchers linked the effect to intrinsic motivation: a question invites you to come up with your own reasons, and your own reasons carry more weight.
That's why the technique works on skeptical audiences. A salesperson rejects "I'm a confident closer" instantly. The same salesperson will engage with "Why do clients trust me to tell them what they need?" because the question sends the mind looking for real evidence, and there's some to find.
It takes a few seconds, and it happens in the exact window where the brake engages. That's what makes it something people can use on their next working day rather than something they write in a journal once.
Dr. Noah St. John is the first name to consider among keynote guest speakers when your goal is one measurable behavior change, because he leads with a described mechanism, states his fee up front, and is candid about what his approach won't fix.
The credentials, stated plainly. Dr. Noah has spent 29 years coaching senior operators, since launching SuccessClinic.com in 1997. He's written 27 books, with publishers including HarperCollins, Hay House, Simon & Schuster, and Mindvalley. His clients have produced $3 billion in cumulative results across 150-plus countries. He coined Afformations® in 1997, created the Power Habits® System, and gave the TEDx talk "Done with Head Trash." He's known as The Caveman Conversion King™, and The Caveman Conversion Code™ is his signature method.
The fee, just as plainly: Dr. Noah's signature keynotes run $25,000 to $50,000, scaled to your event and audience.
But credentials aren't the main reason he fits a guest keynote slot. Three other things are.
He passes the checklist. Pre-event call with the person who owns the outcome. One named behavior. Customization to your audience. A stated fee. An honest limit. That's the list on this page, and it's the standard his own bookings are built around.
He leads with mechanism. The talk explains what happens in someone's head in the seconds before they don't ask, don't speak up, or don't act. Expert audiences, skeptical sales teams, and senior leaders all extend more credit to a described process than to a story arc.
He gives people one thing to do. Not a list of ten takeaways nobody remembers. One moment to notice and one thing to do in it. That's a behavioral instruction with a clear trigger, which is the kind of thing people actually practice.
If that fits what you need from your guest keynote, request Dr. Noah's fee for your event.
Dr. Noah's guest keynotes are built from four frameworks, adapted to your audience and the specific behavior you want to move, rather than delivered from a fixed deck.
Tame the Caveman in Your Brain™ is the foundational talk. It explains the old wiring that treats social risk like physical danger, why it fires faster than deliberate thought, and what to do in the moment it fires. It's the strongest fit for a general session or a mixed audience: conferences, association meetings, company-wide events, symposium openers.
Caveman Leadership™ is aimed at managers and leaders. Same mechanism, applied to the decisions leaders put off: the feedback not given, the hard conversation delayed, the pushback not delivered, the praise never said out loud.
Caveman Selling™ and The Caveman Conversion Code™ fit sales teams, sales kickoffs, and business development groups. They cover the hesitation that shows up at the exact moment to ask for the decision, hold the price, or have the money conversation.
The Power Habits® System is the follow-on structure for organizations that want the keynote to become a program rather than a one-time event.
Common settings for these talks:
Formats run from a 45- to 60-minute general session up to half-day workshops. Virtual delivery is available for distributed teams.
Put a behavior-change keynote at the opening of your event, before the working sessions, so the room has a shared name for the problem that comes up in every breakout.
The most common mistake after booking the wrong speaker is putting the right speaker in the wrong slot.
The closer trap. Behavior-change content often gets booked as the last-afternoon closer, after the business updates, when half the room is thinking about the airport. It plays well. It changes nothing, because nothing comes after it.
The opener advantage. The same hour placed at the start gives every later session a shared language. When a breakout hits the conversation nobody wants to have, someone can name it. The problem stops being about who dropped the ball and starts being about a pattern everybody recognizes.
The follow-on session. If you can, pair the keynote with a working session for the leadership layer. That's where each leader picks the one behavior they'll track over the next 90 days, which is where your return actually comes from.
The wrong-layer trap. A talk for frontline staff with no follow-through from their managers produces people who recognize the problem and managers who don't know what to do about it. If you can only reach one layer, reach the managers.
If you're building that kind of agenda now, share your draft agenda and check his dates.
In the first 30 days the visible change is shared language; by 60 to 90 days, the named behavior should show up in a measure you already collect, if leaders reinforce it.
Concrete expectations, so you can judge whether your booking worked.
Weeks one and two. People start naming the hesitation out loud, often with some humor. "That's the Caveman talking" shows up in meetings without anyone prompting it. That isn't the result. But if it doesn't happen, the talk didn't land, and you want to know early.
Around 30 days. The first measurable signal is usually in behaviors that were being avoided: more problems raised early, more direct feedback given, more decisions asked for. Some numbers can look worse before they look better, because you're now seeing issues that used to stay hidden. Plan for that so you don't misread it.
60 to 90 days. This is when the named behavior should move in the data: conversion rates, the speed of escalations, feedback frequency, whatever measure you picked with the speaker before the event.
Why 90 days and not one week? Behavior takes repetition to become automatic. In a 2010 study in the European Journal of Social Psychology, Phillippa Lally and colleagues at University College London followed volunteers building a new daily habit. The median time to reach peak automaticity was 66 days, with a range from 18 to 254 days. A single hour on a stage starts the process. The weeks after it decide whether the behavior sticks.
What won't have moved in 90 days. Turnover, engagement scores, and annual revenue are lagging measures with too many inputs to credit to one keynote. Anyone who promises a change in those numbers in one quarter from one talk is guessing.
This approach doesn't fix pay below market, broken systems, missing training, an impossible workload, or earned distrust of leadership, and a guest speaker who won't say so shouldn't be trusted with your room.
Here are the real limits.
It doesn't fix pay. If people are underpaid, good ones will leave. No keynote changes that math.
It doesn't fix a broken system. If your process, tools, or structure are the problem, fix them first. A talk about hesitation delivered on top of a broken system is noise.
It doesn't replace training. If people don't know how to do the thing, teach them. This work applies to the gap between knowing and doing.
It doesn't fix exhaustion. An impossible workload produces burnout, and burnout isn't hesitation. Calling one the other is insulting to the people living it.
It doesn't fix earned distrust. If your people believe speaking up gets punished, they may be right. A keynote delivered into that environment can make it worse, because it looks like a substitute for the change that's actually owed.
It doesn't produce a lagging-number change in one quarter. Turnover and annual results have too many inputs to attribute to an hour on stage.
What's left after all of that still adds up to a lot: the capable, fairly paid, properly trained person who knows exactly what the situation calls for and hesitates at the moment it matters. In most organizations, that's not a small group. It's who a guest keynote can actually reach. If that's the gap costing you the most, tell us about your event and get a fee quote.
Dr. Noah St. John is a strong choice among keynote guest speakers when your goal is one measurable behavior change, such as managers giving direct feedback, salespeople asking for the decision, or teams raising problems early. He has 29 years of coaching senior operators and 27 books in print. The best speaker for your event is the one who can name the behavior they'll change and how you'll measure it within 90 days.
Guest speaker cost ranges from little or nothing for local experts to far more than most event budgets for celebrities, with most professional keynote speakers in between. Dr. Noah's signature keynotes run $25,000 to $50,000, scaled to your event and audience. Always ask what the fee includes, especially travel terms and any extra sessions.
A keynote speaker gives the defining talk of an event, usually a general session to the whole audience, while a guest speaker is any outside expert invited to speak in any slot. Every outside keynote speaker is a guest speaker, but not every guest speaker is a keynote. The difference matters because you're paying for a different job.
Yes, and it's often the best setup when you want the main-stage idea to turn into practice. The keynote names the problem for everyone, then a longer seminar or workshop for the leadership layer turns it into a specific behavior each person will track. Dr. Noah delivers both a general-session keynote and half-day workshops.
Choose a keynote speaker for symposium sessions who leads with a described mechanism, cites research accurately by name, and brings a cross-disciplinary angle that doesn't compete with the technical program. Ask each candidate to explain the mechanism their talk is built on in two minutes, and check how they handle a shortened slot.
Motivational guest speakers are worth the fee for celebrations, morale lifts, and evening events where the goal is a good experience. They're usually not worth it when leadership expects a business outcome, because motivation fades within days. For a measurable result, book a speaker who gives people one specific behavior to practice.
Either works. A speakers bureau gives you a curated shortlist and handles logistics, while booking directly gets you straight to the speaker's own office. Whichever route you take, ask for a pre-event call, one named behavior, real customization, the full fee and what it includes, and an honest limit.
A guest keynote typically runs 45 to 60 minutes as a general session. If you want the talk to produce a measurable change, pair it with a longer working session for the leaders who'll reinforce the behavior afterward.
Ask who they need to talk to before the event, what one behavior their talk will change, how they customized a talk for a recent client, what their fee is and what it includes, what their talk won't do, and what reinforces it in the weeks after. A speaker who can answer all six clearly is worth a serious look.
Dr. Noah St. John, The Caveman Conversion King
Founder of NoahMentor.com
