
We create products that ensure information and automation are trustworthy, accountable, and reliable. Building @predictablecode
Seattle / Cádiz
Joined February 2025
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Predictable Machines retweeted
Empieza a haber mucho hype con la verificación formal. Esta semana arrancamos con lo que han montado nuestros amigos de @AIPredictable @raulraja y @Jorge__Galindo.
¡Muchas ganas de contar lo que somos capaces de hacer con ello!
形式検証は普通に使われるようになるよ
形式検証ではある性質が数学的に正しいことを確実に証明してくれるから、たとえば、「秘密鍵が出力に漏れない」と証明された場合、その経路での情報漏洩攻撃は不可能になる
特にセキュリティ周りは形式検証で穴を塞ぐことが重要になるだろう
証明した性質に違反する、すべての攻撃を防ぐことができるからだ
たとえば、メモリの安全性が証明できれば、その種のメモリ破壊攻撃は全て排除できる
以前までは学習・実装コストが非常に高かったが、エージェントのおかげで、それはほとんどなくなった
逆に、攻撃者側は圧倒的に優位になっている
狙われてしまえば、ほぼ勝ち目はないので、開発者は祈るしかない
形式検証がその状態を変えるはずだ
pstack も既に形式検証の仕組みを取り込んでいる /crate-formal-verification-skill・/maintain-formal-verification-skill ・/statechart だ
これらは、エージェントが必要な箇所に形式検証を行う Skillを作ってくれるし、状態遷移図であらゆるバグの手順を人間に示してくれる
セキュリティに関する部分、ユーザーにとってバグがクリティカルな問題になる部分の手順を全部洗い出して可視化し、それを検証し、修正まで人間の介入なく行えるので、本当に形式検証のコストは非常に低い
ここまできて、pstack 使わないなんて選択肢あります?!
Predictable Machines retweeted
AI can write code faster than ever. But can it prove the code does what it is supposed to do?
At @Lambda_World, David Mazarro & Raúl Raja @raulraja from @AIPredictable ask exactly that in “Towards Multi-language Program Verification for AI”.
Generating software is becoming easy. TRUSTING it is hard.
29–30 Oct, 2026
Torremolinos, Malaga. Spain
#Lean4 #FormalMethods #AI #LambdaWorld
Predictable Machines retweeted
Maybe it's because I'm obsessed with the topic, but it feels like everyone in AI is suddenly talking about verification 🤓.
Not all verification is the same, though.
Most of what labs ship today is probabilistic: agents cross-checking each other, one model grading another's work. It scales to fuzzy, human problems, and honestly, it's the only thing that does. But you get confidence levels, never guarantees.
At @AIPredictable, we're betting on deterministic verification. Mathematical methods that give you a binary answer: does the code do what the spec says? Yes or no.
We generate specs, translate them into Lean, and formally verify every possible theorem about expected behavior. Not just the happy path.
It doesn't apply to everything. Ask it a philosophical question, and it's useless. But for code in banking, pharma, or healthcare, where "probably correct" doesn't cut it, the game changes.
So, honest question: is probabilistic verification enough for what you're building, or do you need the math?
Predictable Machines retweeted
The last article of the #AICodePainPoints series is done! (For now, because every improvement in this field brings new issues with it.)
This time, it's about what happens when a developer clicks Merge on AI-generated code reviewed by another AI. What are they actually approving? And in regulated industries, who carries the weight when something breaks?
The accountability didn't disappear. It just concentrated in one click.
Predictable Machines retweeted
Uno de los amigos que ayer hizo demo fue @Jorge__Galindo con su @AIPredictable .
Está escribiendo unos blogposts majos sobre cómo su bicho ayuda a solventar los pain points habituales de programar con IA, pero en su caso con clientes corporate para cosas serias (no el vibecodeo de pachanga que flexeamos por aquí).
Echadle un ojo, que merece la pena aprender sobre el curro que tiene el garantizar que tienes unas specs capaces de superar auditorías corporate, y no un markdown slopeado de esos...
predictablemachines.com/blog…
Replying to @diegomarino
no me puedo juntar con mis panas... tras el anuncio del ficha estrella, he visto 3 demos de productos que están lanzando/haciendo con IA... y yo ahora a enviar IRLs para comerme varias duedils antes de verano 😭
joder qué descolgado me estoy quedando de la vida...
Predictable Machines retweeted
If you are curious about knowing the different pain points we see in the ai generated code, and how we think we can help, this series of articles could be interesting to you 😊
Predictable Machines retweeted
Software engineers, PMs, designers, and CS / ML / MBA students: We're doing a Startup Fair @ Startup Day 2026.
Builders from @getclarify @yoodli @ItsClearlyAI @AIPredictable and more will talk product, tech, and their roles. No recruiters.
May 15. Free.
Predictable Machines retweeted
Boring code meets exciting new tech 😮
We just open-sourced lean4-json-schema: derive JSON Schema from Lean 4 types, with a compile-time proof that serialization always validates against it.
No more trusting. The compiler checks it. 🧵
predictablemachines.com/blog…
Predictable Machines retweeted
I'm lucky to be part of a founding team with people in tech for the second time in my life.
15 years later, the important parts are still the same. But the context has changed, and it says a lot about the times.
I wrote about what it's like being part of @aipredictable : jorgegalindo.me/en/blog/post…
Predictable Machines retweeted
AI-generated code moves fast, but consistency is the real challenge.
We work at the intersection of software and mathematics, using @leanprover to formally verify that AI-generated code stays aligned with project requirements.
Why we chose Lean: predictablemachines.com/blog…
Predictable Machines retweeted
Lunch might be ongoing but for our sponsors @jetbrains and @AIPredictable its a great chance for speaking the attendees about what they offer and also any potential jobs on offer
#sponsors #facetoface #lambdaworld #AI #Kotlin #Ktor #jobsearch
Predictable Machines retweeted
¡Vamos allá otra vez!
Ilusionado como la primera vez.
Hapiness is only real when shared. ❤️
The world runs on information, but can we trust it?
That question led Justin, Nick, @raulraja, and @Jorge__Galindo to start Predictable Machines, combining AI + formal verification to make information trustworthy, accountable, and reliable.
Predictable Machines retweeted
It’s an honor to keep building alongside my friends Justin, Nick, and @Jorge__Galindo.
We're creating AI you can trust, with code generation and formal verification at the heart of the journey.
Follow @AIPredictable for updates. ❤️
The world runs on information, but can we trust it?
That question led Justin, Nick, @raulraja, and @Jorge__Galindo to start Predictable Machines, combining AI + formal verification to make information trustworthy, accountable, and reliable.
















