Jev V13 plays blitz chess against Fable 5.1 and GPT-6 Astra
Non-LLM model Jev V13 played 5+0 blitz against Fable 5.1 and GPT-6 Astra: Fable lost on time despite a material lead, and Astra checkmated Jev in 18 moves.
Jev VS Fable 5.1 VS GPT-6 Astra: chess typesafe's new Jev V13 isn't an LLM. it doesn't chat, doesn't explain, doesn't write code — it only makes decisions. so we made it play blitz against frontier LLMs. the test: 5+0 blitz. every move is one API call. Jev V13 vs Fable 5.1: • fable outplayed it. by move 29 it was +16 in material and even promoted a second queen • but it kept burning 6-15 seconds per move on analysis. jev answered in ~2.6s • so fable didn't have enough time and lost Jev V13 vs Astra: • astra didn't bother winning on material. it mated jev in 18 moves. Qe1#, with 2:27 to spare
This post quotes another post: “ChatGPT co-inventor releases Jev, a model built for decisions rather than text”