Diogo Almeida

Co-Inventor of ChatGPT & Co-founder, TypeSafe AI

Diogo Almeida is the Co-founder and CEO of TypeSafe AI, a company building a new class of large language models for true no-human-in-the-loop automation. Diogo brings a decade of deep AI research experience and was formerly at OpenAI and Google Brain. He played a foundational role in shaping the modern LLM landscape, credited with co-inventing InstructGPT, RLHF, ChatGPT, and GPT-4. His work at TypeSafe AI focuses on rethinking foundational LLM assumptions to prioritize reliability, latency, and cost, to build AI that can be embedded deep inside real systems.

Diogo Almeida

Sessions / 2026 / 1 talk

  • Four months before TypeSafe AI launched Jev, founder Diogo Almeida stood up at AI Council and laid out the problem Jev was built to solve. He never names the product in this talk. He says only that TypeSafe is going all in on automation and getting ready to ship in a couple of months, then spends 36 minutes on why he thinks the rest of the field is pointed the wrong way. TypeSafe came out of stealth on September 15, 2026 with $40M led by DCVC and launched Jev, a model that outputs typed decisions with probabilities for software to act on. Almeida spent four and a half years at OpenAI, where he co-authored the InstructGPT paper and the GPT-4 Technical Report and worked on the RLHF research behind ChatGPT. His argument here starts from that work. His read is that roughly all production LLMs are trained with RLHF or some variation of it, and RLHF optimizes for human preference. Human preference is a different target from doing the task correctly. That gap is why AI looks superhuman on assistance work and falls apart on automation work that looks easier. He walks through mode collapse, Yann LeCun's doomed-LLM argument, why a 1.3B-parameter InstructGPT model was preferred to 175B GPT-3 at following instructions, and where he thinks Sutton's bitter lesson is incomplete. He closes on the question that started TypeSafe, which is what it would take to treat language models as a primitive that software calls, the way it calls a database or an API.

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