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OpenAI Evals

Framework and registry of evals for testing LLMs and LLM-based systems, maintained by OpenAI

Observability tool by OpenAI

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Setup steps are in the repository. Website · Docs · Repository

About

OpenAI Evals lets you test model outputs against style and content criteria through the Evals API, or run evals locally from the repository. OpenAI is deprecating the Evals platform: it becomes read-only on October 31, 2026 and is scheduled to shut down on November 30, 2026.

Use cases: llm-evaluation

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Fact sheet

Category
Evals · open source

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Signals

Stars
19,644
Forks
3,120
Open issues
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Last commit
Apr 14, 2026 (6 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
License unknown
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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OpenAI Evals. Agent Mart. https://agentmart.dev/observability/openai-evals (last updated 2026-10-24)