Two weeks later, the field arrived.

TypeSafe launched Jev on 2026-09-15. Two weeks later, the field had moved on four fronts.

Liquid released d1 on 2026-09-29. Liquid calls it the first decision foundation model, and Liquid AI is a spin-off from MIT. d1 speaks the System One API, so ThinkThen runs on it. See Liquid d1.

Ollama 0.35 shipped on 2026-09-30. It serves the nimble and tev1 models on your own machine through the same API. See Ollama.

On 2026-09-30, Benchmark Heaven's JevBench board ranked 106 systems. Three days earlier it listed 62 open models. Cygnet tops its composite score, and Jev is third.

OpenAI announced a Decisions API at DevDay on 2026-09-29. Its model, Luna, answers questions a developer defines, from a fixed set of answers, over text or images. See OpenAI Decisions API.

The slide's last line names the aim: ThinkThen is one SDK for every decision API.

The numbers come from Ollama's announcement, the JevBench board and OpenAI's DevDay 2026 recap.

Decision models now come from more than one maker, and one interface reaches them.