@aimlapi had Jev V13 play 5+0 blitz chess, one API call per move, against Fable 5.1 and GPT-6 Astra. They report Fable was up a queen and +16 material by move 29 but lost on time because it spent 6–15 seconds per move while Jev answered in about 2.6 seconds; Astra checkmated Jev in 18 moves (Qe1#) with 2:27 left.

AI/ML API (@aimlapi) published this on 2026-09-16. @aimlapi had Jev V13 play 5+0 blitz chess, one API call per move, against Fable 5.1 and GPT-6 Astra. They report Fable was up a queen and +16 material by move 29 but lost on time because it spent 6–15 seconds per move while Jev answered in about 2.6 seconds; Astra checkmated Jev in 18 moves (Qe1#) with 2:27 left. Jev VS Fable 5.1 VS GPT-6 Astra: chess typesafe's new Jev V13 isn't an LLM. How Jev or TypeSafe is used, in the post's own words: “Jev VS Fable 5.1 VS GPT-6 Astra: chess typesafe's new Jev V13 isn't an LLM.” The post does not name a separate audience. It is for people reading what @aimlapi shows here (it quotes @CompleteSkeptic; it includes media).