OpenAI Releases Decisions API, Criticized as Similar to TypeSafe's Jev
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In early October 2026, OpenAI released a limited preview of the Decisions API at Dev Day. The product lets the Luna model quickly and cheaply make classification or agent behavior choices from predefined options. Reports noted its functionality resembles Jev, released by TypeSafe AI the same month. Jev is a 'System One' decision model that reviews each agent operation and monitors similar Hugging Face events. In terms of cost, using Jev costs about $2.94, versus $372 for a frontier LLM. On October 7, 2026, Simon Willison released the llm-openai-decisions 0.1a0 plugin, connecting to OpenAI's Jev-style Decisions API. The product remains in limited preview.
AI overview of reporting · Updated 11 days ago
Developments
2 developments
- 10/7 07:04 · 1 reportsOpenAI releases Decisions API with companion llm pluginSimon Willison：llm-openai-decisions 0.1a0
- 10/1 03:00 · 1 reportsOpenAI releases Decisions API, similar to TypeSafe's JevTechCrunch · AI：OpenAI’s Jev clone could help the frontier lab stop its swarming agents
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- Simon Willisonllm-openai-decisions 0.1a0
Simon Willison released the llm-openai-decisions 0.1a0 plugin, which supports OpenAI's newly announced Jev-style Decisions API from DevDay.
- TechCrunch · AIOpenAI’s Jev clone could help the frontier lab stop its swarming agents
OpenAI released a limited preview of its Decisions API at Dev Day, letting the Luna model quickly and cheaply make classification or agent behavior choices from predefined options—functionality similar to Jev, released this month by TypeSafe AI. "System One" decision models like Jev can review each agent action and monitor similar Hugging Face events; using Jev costs about $2.94 versus $372 for a frontier LLM.