TypeSafe

Amazon Web Services has released Strands Decider 2B, an open-source model that chooses among pre-decided options and returns a confidence score instead of generating text. It is inspired by TypeSafe's Jev and is small enough to run locally. Amazon says it briefly topped the Jevbench ranking for models of its size.

At Dev Day, Sam Altman revealed OpenAI's new Decisions API, which narrows its Luna model to predefined choices for fast, cheap classification. The move closely mirrors Jev, a specialized decision model from startup TypeSafe AI released weeks earlier.

Ollama v0.35.0 adds a new /v1/systemone endpoint for decision models, which return structured choices, probabilities, and scores instead of generated text. The release also fixes stalled MLX downloads and macOS update notification bugs.

TypeSafe, founded by ChatGPT co-inventor Diogo Almeida, launched Jev on September 15, 2026 — a model that cannot generate free-form text but claims to classify, route, and score 20-200x faster and 40-400x cheaper than small frontier LLMs. Trained via a new method called RLCD, Jev targets production systems that use LLMs purely as structured judges or routers.