I’ve spent years developing poker AI, and sometimes it feels like I’ve gone full circle. From the early days, when poker was thought to be too “human” for machines to master, to today, where bots can bluff better than most humans, I’ve seen the evolution firsthand. And yet, there’s still a part of me that chuckles at the irony of it all. It’s poker, the ultimate psychological game, getting done with algorithms and code. So, how did we get here? And what does that say about the game?

Having come initially into poker AI research, I really did think it impossible that one could ever hope to teach a machine to read between the lines-to sense fear or confidence behind a bet.

But with refinement in technology came refinement in how to simulate human-like decision-making, and poker bots suddenly weren’t so much curiosities but capable of outsmarting some of the best players of the game. It was no longer about pure hard force or even calculation of odds but was all about adapting, learning, and yes, bluffing.

There’s something almost comical about it. We, humans, have spent centuries mastering games like poker, believing that the art of reading someone’s “tell” was an uncrackable code. Now, my poker bot doesn’t just analyze your betting patterns; it knows when you’re sweating over that decision to raise or fold. It’s like watching someone run straight into a brick wall they didn’t know was there.

But here’s the amazing part: these bots don’t just keep to their circle and beat on amateurs. They play against pros. The best poker AI is all about not memorizing hands or running them through some kind of formula, but evolving-learning in real-time, countering strategies willy-nilly. The bot is always a few steps ahead, calculating what not only you are likely to do but what you think it’s going to do. It’s the perfect poker cheat without really breaking any rules.

Not to mention poker machine learning. What at one time required laborious programming now gets handled through algorithms of learning from experience. Every played hand fed the machine and taught it how to exploit the weaknesses, find the patterns, and adapt to any playing style. It was obvious that this bot learned more quickly than any human ever would-have made each game a lesson and each opponent a data point.

Of course, not everyone is thrilled about this. There’s a fair share of players who see poker AI software as the death of the game. They claim it removes the human element—the sweat, the nerves, the gut instincts. And while they might be right, I’d argue it’s just the next step in poker’s evolution. Yes, AI has changed the game, but isn’t that what we’re supposed to do? Change, adapt, improve?

It’s no longer about who’s on the better hand. Poker AI gave way to an entirely new kind of strategy-a deeper layer of mind games. The bot isn’t just tabulating probabilities; it’s simulating human capriciousness, learning to bluff, and stretching the limits of what we once thought machines could never pull off. It’s like teaching a dog to play chess-and then watching it beat you at your own game. You may, however, be pondering whether there is left any future for the human players-after all, how would you compete with something which never tires, never gets emotional, and does not make guesses? Well, it’s not all bad news. It’s, as a matter of fact, the beauty of poker that it is so unforeseeable; while AI poker bots really know to make use of the pattern, they are still very much vulnerable to creativity.

Continue reading →

There was a time when poker was about reading people, about eye contact, and-about being honest-trying to make sure that guy across the table had absolutely no idea you were bluffing. Actually, I remember those days. As a matter of fact, they are not exactly behind our backs, but then a new player entered the game-without eyes to meet, nerves to crack, or emotions to manipulate. Of course, I’m referring to poker AI.

To the mathematician and AI developer in me, relationships with poker have been a question of numbers, less with nerves. Of course, it is very exciting to conduct a well-conducted bluff, but curiously, what really caught my attention was to see the many ways AI began reshaping poker. Let me make one thing very clear from the start: Poker AI is not about pattern recognition, nor about weighing probabilities, or whatever other technique; it’s about teaching machines to “feel” the game in ways that sometimes let them outdo our intuition.

At the very outset of my research on poker AI, even the very concept of a bot bluffing sounded too outlandish to hold any credibility. How could a machine that is all about cold calculation learn to bluff? Consequently, it would seem that bluffing is not some mystical human skill but rather a calculated risk, an area in which AI is good. It would not be long before AI also mastered this particular aspect of the game. Now we have bots playing, outsmarting many pros-for example, the famous case where Pluribus outsmarted five professional top players and won. The bottom line was that it did not win out by out-calculating them; instead, it won out by out-bluffing them. Machines learning to lie-something almost fascinating and terrifying at the same time.

It seems that the technology has developed incredibly quick, being a developer of poker bots and AI strategies for several years. Let’s just say early poker bots were laughably terrible: they would make the same predictable moves over and over, falling into patterns even an amateur could exploit. Then something flipped, and machine learning got sophisticated in poker. The algorithms will consider the game-thousands of them-and learn from their mistakes a lot quicker than any human ever could.

The challenge in the development of poker AIs was no longer in how to have it win but finding one which could think like a human-even better, think differently enough to beat humans.

I remember at first, any of my poker bots played a pro, I just didn’t really expect that much-nice, maybe a couple of fluke wins or something.

It stood up to this professional, pulled bluffs at just the right moments. That wasn’t just cards; that was reading the player’s behavior and adjusting on the fly. It was one of those weirdly impressive moments, kinda like the first time you ever hear a child lie in your life-it’s kinda powerful, and sometimes unsettling. But perhaps most exciting of all, poker AI actually challenges our notion of the game. We’d like to think that poker is intuition and psychology. At its very core, though, it’s a game of incomplete information. Whatever-poker AI algorithms take that fact and run with it, bases conclusions on statistical probability, not gut feelings. You know what? It works.

Continue reading →

Ever thought you’d be outplayed by a machine? It wasn’t long ago when poker was just about instinct, reading faces, and pushing your luck when the cards weren’t on your side. These days, though, you’re just as likely to face off against a piece of code that doesn’t sweat, doesn’t second-guess, and certainly doesn’t bluff nervously. Welcome to poker AI World, where the bots are rewriting the rulebook-and players like me, pros in poker enthusiasm and in AI development-scramble to catch up.

Well, I finally started working on poker AI and somewhat felt like I was playing with fire.

So, here I was, a guy who loves the unpredictability of a human opponent, trying to school machines on how to bluff and better calculate odds than we ever could. The irony, right? Distilled into algorithms so precise that they might well outthink most of us before we’d even glanced at our cards, is just that which makes poker exciting: the mind games, the tension. Let me tell you, the development of poker AI tools is not about creating a perfect player. No, it’s more building up a system that learns from mistakes, changing strategies en route, and exploiting your weaknesses faster than you can yell, “All in! “ We first created basic poker bots-they were so clunky. They followed very strict rules and were so easy to predict. But now? That is, machine learning in poker allows the bots to evolve rather than play games.

They dance and shift with you, calling each other out-as if they were the ones watching you through your whole poker career. I mean, literally, years of studying the ways of these algorithms. Fascinating, really-you really would think poker AI strategies would be cold, almost clinical. The more I worked on them, the more I thought: it’s like perfect poker players, sans the nerves. For humans, emotions seep in – after a few losses you start to question your gut. A bot?

It sticks to the math, and when it bluffs, it is not because it “feels lucky”, it is because the numbers said that it should.

I will never forget the first time I watched one of my bots completely dominate a table of amateurs. It was mesmerizing and a little terrifying. There was no hesitation, no fraction-of-a-second doubt to wrangle with, as we humans do. It knew what to do. That is not to say the bot was unbeatable-there’s always some method to trip a bot up-but it would play consistently better than players relying on gut instinct too much. Here’s where it gets interesting: poker AI algorithms have become so sophisticated that they now regularly challenge, and sometimes defeat, the best human players. You’ve probably heard of Pluribus or DeepStack, right? They’ve taken on poker’s elite and won. It’s like watching Kasparov vs. Deep Blue all over again, but with chips instead of chess pieces.

And while it might seem like the bots have completely taken over, I’d argue that they’re also teaching us something valuable.

Continue reading →

It has always been the game of reading people. This gleam in an adversary’s eye, the way he fiddles with his chips, is human instinct against human bluff. But it’s changing very fast now. It could be as well in front of you, opposite an AI poker bot. And the bots don’t get nervous. They don’t get tired. And for sure, they don’t care that you might think you have them beat.

Deep research into poker AI was about trying to break the code not just behind the next unstoppable poker bot, but also poker in general. What if we could strip out all of that complexity and nuance and come up with the pure, cold strategy? That’s where poker machine learning is coming into the picture. It’s where the heart and soul of poker AI algorithms analyze millions of hands, visualize scenarios, and optimize with methods quite unthinkable by the human brain.

Let’s be honest: there is so much fear around poker bots. They cheat and spoil the game. Now, surely, the concept of some poker AI tool beating you looks unfair. At least it looks so if you do it in your free time. But here’s where it catches: these AI systems have more to do than win — they’re about learning. Those ways through which we can rethink games, the ways they challenge us to think better, smarter, or more strategically, are simply inspiring.

But one of the coolest innovations down this line has been Counterfactual Regret Minimization, or CFR. I know, the name reads like it’s out of some kind of sci-fi novel. But when broken down, it is actually pretty simple. CFR lets AI learn from past mistakes or “regrets.” It simulates hands, makes decisions, then adjusts its strategy in relation to what it could’ve done better. With more games played, it regrets less. It is, in some sense, more human than we realize; they, too, learn from failure.

But then there’s Monte Carlo Counterfactual Regret Minimization, which really allows the bot to key in on what’s salient in the game. It’s like a laser beam focus on all the important decisions and basically ignore all the noise in between, almost how a pro player would really strategize. Really fascinating and at the same time kind of scary to find out how good they actually become.

I remember the first time I got hit by one of these bots.

I mean, there was this smug confidence inside; I had been playing for years, I knew the game. Five hands in, and this was going to get ugly; he’d call my bluffs and actually predict my every move. Never had I felt so exposed on a poker table. I always feel that I’m playing chess with some grandmaster who knows your strategy even before you have thought of it.

But what is truly brilliant in the development of poker AI is not exactly in building a victorious bot but in building up further the notion of what was possible in a game so dependent on chance. It shows us strategies really unknown to even the best human players. A big part, in many ways, it is almost as if we’ve been playing checkers while they’ve been playing chess the whole time. Let me just get that out of the way: do these poker AI bots destroy the game? Some may say yes to affirmative responses. I say yes, it does; it takes out that human element, making the poker way too robotic and predictive. To me, I see things different. These systems evolve us. They really make us think outside tradition, and to me, that is no small spice.

There is something thrilling about it: that the person before you could well be a finely machined AI, and you still have yet to outsmart it.

Continue reading →

You see, I have spent years buried in poker AI research, fiddling around with algorithms and developing strategies that, on paper, should crush opponents. You really would think the more detail you provide an AI, the better it gets. Firsthand, I learned that doing so sometimes makes a poker bot worse at the game. That does sound ridiculous, doesn’t it? But let me explain.

The magic word in AI poker development is abstraction. In other words, it’s just a nice way of saying we dumb down the game for the AI so that it does not get overwhelmed with the possibilities. Imagine trying to think over all combinations of cards or all possible strategies for betting within this game. That could take years! So we summarize similar situations into bundles and hope our bot plays them in the same way. For years, I thought-as many people still do-that finer and finer grainedness in these abstractions was the path to stronger poker AI. The more information, the better the decisions; well, that’s what we thought.

At times, it was actually interesting, because very frequently, in refining this abstraction, I found my bots falling into traps. J: Imagine giving your bot a new set of shiny rules and then watching it get played by simpler strategies. It’s almost like, in trying to dissect every little micro detail, it loses sight of the big broad perspective. I have seen this happen with my own poker AI tools, and I started thinking: Maybe we’re just overengineering our poker bots?

I conducted some experiments with a much simpler game called Leduc Hold’em. It’s like poker, but the fat sucked out—ideal for testing AI strategies without getting bogged down in a swamp of complexity. It was a kind of test, to see the way my AI would handle various levels of abstraction. Well, it went just like I had guessed: when the bot had less information, he used to make simple decisions. But with more details, the strategy just didn’t improve. Sometimes the bot was simply. confused. He began to overreact to minor changes in the game, making himself weak. The best poker-playing AI I could make was not really the one that had the most refined strategy. Sometimes it would just be fixated on, you know, the most insignificant piece on the board in some kind of grandmaster weirdness and totally miss obvious checkmate.

But the thing is, playing poker is about human intuition and psychology, and at higher levels, it’s a bit of a game that involves having lots of bluffs or unpredictability. That’s weird, because my poker AI algorithms can do probabilities in their sleep, but they sometimes miss this subtle art of misdirection that defines poker. The more we refine abstractions, the more detail we actually get, thus giving the bot a kind of “tunnel vision” into focusing on minutiae rather than the overall game.

I call this the “Monotonicity Myth.” In AI poker, there is a conventional wisdom that the more complex the abstraction, the stronger the strategy is.

Continue reading →

I’ve always been intrigued by the poker world; the combination of luck, strategy, and psychology is so thoroughly satisfying that it would be challenging to replicate that depth of feeling in any other game. Every round, every hand, every opponent has a unique psychology that can ruin you or build you back up. But what if I told you that the times of staring into someone’s eyes for the best guess of their next move might be numbered? Given my own line of work, I’ve seen the integration of artificial intelligence (AI) make inroads into all aspects of life, including poker.

Poker AI isn’t simply about calculating odds and running simulations; it is learning how to play a game that involves human emotion, manipulation, and uncertainty within a model built around it. I initially started my journey into poker AI research based on a very simple question: can we teach a machine to bluff? Spoiler alert: Yes, but not how you might think.

Poker has always been a lot more than numbers for me. My journey into poker began while studying probability theory, first at Moscow State University and then at Cambridge. Poker was a substantial piece of the most interesting pieces of mathematics at the time, and I developed numerous challenging mathematical models in the process. Then, as I began to work on artificial intelligence-related research during a postdoc position at MIT, I began to think of poker more than just a game, but as a model through which to stretch the boundaries of AI.

Let me be clear: AI poker bots are not the magic formula to confidently win against every player at every table. They are very impressive and can analyze an enormous amount of data in just seconds, calculating literally every possible outcome. But poker is not chess. It’s not a perfect information game, and that’s where it gets interesting. The human factor—bluffing, irrational moves, and sleepiness—brings some uncertainty into any AI’s decision-making function. Even with a perfect poker bot we have developed, it can get stuck on how to address the unknown, and that’s a big part of what makes poker AI cool.

In my short history with poker AI, I find it is a little quirky to watch poker AI play. They are cold, rational, and ruthless, but completely unaware of the nuances of human behavior. They don’t get nervous. They don’t waiver. They just act based upon the information they have received. This can lead to some absurd situations—for example, being at a table with an AI that never tilts, never folds under pressure, and just occasionally makes hilariously bad reads because it missed that subtle, human only cue.

Poker AI has really advanced significantly. The algorithms that I have personally helped develop over the years have changed how amateurs and professionals play. These machines not only play to break even on the best money lines; these machines plan to take advantage of every mistake their opponent makes. Here is the kicker—poker AI is not foolproof. AI cannot always “read” a human person’s decisions as well as another human can, and in a short, time limited scenario, there isn’t enough time for AI to truly adjust. It is like playing chess blindfolded. You think you are good but you are only seeing half the board.

Continue reading →

You know, poker used to be about reading your opponent—watching for that nervous twitch or the tell-tale pause before a bet. But lately, the game has taken a high-tech turn. We’re now in an era where artificial intelligence is creeping its way into the felt, and it’s not just about cold numbers or robotic play. As this AI learns to bluff, just imagine in such fine detail that even grizzled players raise an eyebrow. Now, let’s peek into the research behind poker AIs and sliding bets to reveal exactly how algorithms are rewriting the rules of a game once based on intuition.

I’ve spent years building poker bots and fine-tuning poker AI algorithms. My commercial poker AI, on which I have invested countless hours into developing, is as popular with amateurs as with pros. But here is the thing— one works more and more with AI, then one realizes it is not about making a machine that plays by the book; rather, it is actually about making an AI that can improvise, much like a jazz musician that riffs off the rhythm of the room. Well, now, about this idea of a “sliding window” – it’s very technical wording, isn’t it? This is what one would read in a book on computer science, for example. What it really wants to say is that a poker bot doesn’t stick to only one specific range for the size of a bet. Actually, its bet sizing will change on-the-fly depending on what is going on in the game. Its “window” of possible actions slides so it fits into the situation.

It’s like a chef trying to taste the dish all the time, put salt, put pepper while he’s cooking. The result? Playing with the bot is far more subtle than it ever has been.

I can easily picture purists cringing at the thought of a machine “bluffing” better than a human. “Where’s the soul of the game?”. Well, here’s the twist: this tech doesn’t just mimic human play; it evolves beyond it. Through my years of poker bot research, I’ve seen AI develop strategies that aren’t merely calculated—they’re adaptive, unpredictable, and sometimes, downright sneaky. It’s like playing against an opponent who has not just mastered the game but is constantly reinventing it.

My approach—in fact, the one described in this paper which I was given—is based on methods that use sliding windows to generate what’s called “action abstractions.” Yeah, it’s a big term, but really, it boils down to this: given any particular moment, the AI can determine what set of betting actions will be most effective. It’s not locked into pre-determined sizes. Of course, it can go from big to small or anything in between, according to the heat of the game. The point about it is that it never second-guesses, unlike a human.

You’d think that would lead to super dry, automatic styles of play. You’d be wrong. Some of the sliding windows used effectively almost give the AI a sort of swagger. Take something like No-Limit Texas Hold’em. Folding, calling or betting a fixed amount ceases to be any sort of trivial decision. The AI can do its iterated process of fine-tuning its bet sizes. It is the recipe for a strategy that will be about as predictable as a bluff of an old hand—a little like that master chef adding just the right amount of spice: not too little, not too much, perfect.

Continue reading →

I have lived through the whole of my working life with artificial intelligence, being a developer of poker bots. It is more than an interest; it is more like a full-time job. However, all those years of number crunching and scripting algorithms, and teaching machines how to think, or at least how to play, I have co-created some of the most up-to-date poker AI software. And believe me, these bots do not fool around.

The best thing about AI poker is that it changes its dynamics completely. Strangely enough, the first one to really lead me off in a direction totally different from anything was poker AI, and, of course, yes, I had some background on probability theory and statistics but the challenge was way bigger than merely understanding odds themselves; something like teaching a machine how to learn bluffing, recognizing patterns, and reacting upon unpredictability—things thought to be exclusively human.

But, as it would later turn out, machines are actually very good at poker. From the days when the programs could hardly keep track of a hand, poker bots are taking the game to out-think even the most experienced professionals. This was precisely seen in AI systems such as DeepStack and Pluribus. They’re not your regular bots but rather developed with in-depth poker AI strategies backed by mountains of data to play in a form only a few humans can touch.

Which naturally raises the other question: Can a poker bot really bluff? The short answer is: most certainly. But not in the way we do. When we bluff, there’s often a gut feeling that’s involved. Perhaps you figure you can outthink the guy sitting across the table, or perhaps you just want to see him fold under the pressure. Bots don’t have guts; they’re data-run. They observe, study a situation, crunch the numbers, and then arrive at the most statistically correct decisions. Cold and clinical, yet somehow every bit as effective.

We were working on tweaking one of the many commercial poker bots we had into a bluffing mechanism, just enough to keep a human player guessing like crazy, but not so much that it should obviously make no sense. That’s quite a narrow path, but the AI walks it better than most of the people I know. More often than not, considering a bot acts by calculation and a person by intuition, the bots are very much more dangerous than the people are.

Poker: How Machine Learning May Be Just Starting to Change the Game

As for the real revolution in the development of poker AI, it’s all about machine learning. That’s really what sets apart the best of poker AIs from the rest of the pack: the idea behind machine learning is to let these bots learn from experience, be flexible, and hone their strategies over time. Each hand played, every decision made turns to some big data set, helping the bot to be smarter, sharper, and frankly more ruthless.

Take, for instance, DeepStack, which took up tens of thousands of games, learning from just about every single one of them, until unbeatable. What’s the wonderful thing about this? It doesn’t need any kind of human policing. It’s kind of like watching some sort of child prodigy growing up at warp speed. Instead of playing Mozart on the piano, he was cleaning out the tables at the World Series of Poker.

Continue reading →

As someone who’s spent the last decade developing poker AI, I’ve thought a lot about the game’s future. The poker world is at a turning point. Algorithms and machine learning models are slowly replacing traditional mind games. These models never blink, sweat, or forget. How did this happen, and where will poker go with artificial intelligence as a sparring partner?

Well, when I first approached poker AI, it wasn’t entirely obvious that AI was supposed to match human intuition in the game. Poker is a weird game. Nothing like chess, where everything is viewable—in poker you have cards hidden, bluffs, and instinct—a lot beyond the reach of an algorithm. But as a mathematician, I thought that even the chaotic aspect of poker should be reduced to probabilities.

They were predictable and rigid in the early days of poker bots. Such models went by the book, did not adapt to different strategies, and could be beaten by anyone with basic knowledge of poker. And then something happened: bots learned. Machine learning endowed them with the ability to devise a strategy for playing poker. They began training millions and millions of hands, studying human mistakes, and proceeding to win hands gradually.

The Rise of Uncertainty

That development naturally raised the eyebrows of poker pros. They could do what was thought of as impossible: they would bluff, balance aggression with caution, and read opponents the way people do. At first it felt a little unfair, like giving the calculator during the math exam. But then again, poker is all about finding an edge.

In this, the advantage of Poker AI lied not in faster computations but in being unpredictable. The best poker AI does not always do the statistically obvious move. Sometimes, it bluffs where it statistically should not. It may call when it should fold or raise with a weak hand. This kind of unpredictability, much like in human play, became a weapon. A predictable bot is easy to beat; beating a bot that can adapt and surprise with its bluffs is another challenge altogether.

Designing a bot that can bluff like a human isn’t easy. Machine learning has enabled us to give AI some of the “instincts” that humans rely on. It is not magic; it is just advanced pattern recognition. However, facing such a bot feels like magic or even witchcraft, depending on your chip count.

For many people, poker bots are just cheat sheets. They never get tired, lose concentration, or miss a card. For me, it’s not cheating; it’s just another tool available, just like a sharp mind or a good bluff.
Although these are advanced technological gadgets, the concept does fall into poker’s rich history of outsmarting opponents. Or so it would appear from an existential viewpoint: Is this the end of human players? Will poker turn into some bot-against-bot game instead of player against player? Poker is not about cards and mathematics; it is tension, psychology, and human drama. No AI robot in the world can replace the experience of staring your opponent down, heart pounding, trying to guess whether he’s bluffing.

The Role of AI in Modern Poker

While bots might succeed in online poker, live games that much more depend on emotive gameplay still favor humans. At least for now. There are even a few pros offered by Poker AI. Many people use an AI instrument for analysis and spotting mistakes and thus learn faster. AI is not about bot versus human; it’s bringing the game to another level.

What’s next, I wonder, for poker? Say, will AI be able to outplay the best humans in live tournaments? Are we going to reach a day where only bots play poker? Probably. Until then, I’ll keep playing and developing, searching for that perfect approach: either through human intuition or through some finely tuned algorithm. But in poker, you play the hand you’re dealt; for now, AI is just one card in that deck.