A ChatGPT inventor built Jev, a model that runs code instead of chatting, and developers are excited

A new kind of AI model from a ChatGPT inventor is thrilling developers

Diogo Almeida, a former OpenAI researcher who co-invented RLHF, built a model called Jev that optimizes for code execution rather than human language. It's still a transformer, but TypeSafe AI designed it to run programs and call APIs directly, acting more like an automation agent. Developer reception has been enthusiastic. The post doesn't disclose benchmark scores, pricing, or whether weights will be open.

Why it matters: First model from an RLHF inventor's new startup, with a genuinely different training objective. But the TechCrunch piece lacks benchmarks, pricing, or API success rates — strong signal, soft on hard numbers, so 78.