OpenAI’s Jev clone could help the frontier lab stop its swarming agents
During OpenAI’s Dev Day event on Tuesday, CEO Sam Altman announced the new “Decisions API,” a tool that provides functionality similar to Jev, a software automation model released by TypeSafe AI earlier this month.
During OpenAI’s Dev Day event on Tuesday, CEO Sam Altman announced the new “Decisions API,” a tool that provides functionality similar to Jev, a software automation model released by TypeSafe AI earlier this month. Built on a large language model, the Decisions API allows developers to provide a predefined set of options for the company’s Luna model to choose between at high speeds and low costs.
TypeSafe CEO Diogo Almeida reacted on X to the announcement, while noting that OpenAI’s interest could indicate that building in a System One compatible way represents the future. Although OpenAI launched the Decisions API as a limited preview, industry interest is evident in online conversations. Jev-like models and APIs are emerging from various startups, with developers exploring their use in monitoring and securing AI agents cost-effectively.
Cybersecurity professional Shapor Naghibzadeh demonstrated at a recent hackathon that using Jev to verify agentic actions against assigned tasks costs significantly less than utilizing a frontier LLM. Such affordable monitoring could allow these models to run on every agentic action, potentially improving overall agent reliability.
The story so far
Earlier coverage connected by shared names and topics. Follow the dates to see how coverage developed; these links do not imply every article describes the same event.
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Original publication: 1 October 2026 00:30
