A new kind of AI model from a ChatGPT inventor is thrilling developers
TypeSafe AI, founded by ex-OpenAI RLHF inventor Diogo Almeida, released Jev, a non-LLM transformer outputting calibrated probabilities for cheap software automation.
TypeSafe AI, a startup founded two years ago by former OpenAI researcher Diogo Almeida, who helped invent RLHF, released a transformer-based model called Jev that is not a large language model. Instead of text, Jev outputs probabilities the company calls 'calibrated decisions,' making it fast, cheap (output tokens free, input metered by the billion), and hallucination-free since users define outputs in advance. Almeida says the 'System One model' is trained exclusively on synthetic data via a technique he calls 'reinforcement learning from calibrated decisions,' and demand was high enough to briefly knock out the company's API. Vercel reported 5-18x faster results than ChatGPT Luna 5.6 for command-safety classification, while Bryo AI found Gemini slightly more accurate but 10-20x more expensive for email classification.