Ex-OpenAI Researcher Launches Jev, a Decision-Only AI Model That Cannot Generate Text

Diogo Almeida, the OpenAI researcher behind RLHF and InstructGPT, has launched Jev through his startup TypeSafe AI, releasing it in early access on 15 September. Unlike large language models, Jev is designed solely to make structured decisions, returning one of three output types — a Choice, a Score, or a probability — each paired with a calibrated confidence value. The model completes tasks in 70 to 500 milliseconds and charges $0.042 per million input tokens, with no fee for output due to its non-autoregressive architecture. Almeida argues that chat was the wrong target for advancing AI automation, and that reliable, fast decision-making with trustworthy confidence scores is what software pipelines actually need. TypeSafe AI raised $40 million in funding and built the team from alumni of OpenAI, Google Brain, Meta, and FAIR, with Jev's benchmarks claiming it runs up to 193x faster and 444x cheaper than frontier language models on comparable workflows.