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April 16, 2025 · OpenAIFeature

o3 and o4-mini reasoning models added, and Codex CLI launched

Added two new o-series reasoning models, o3 and o4-mini. They set a new standard for math, science, and coding, visual reasoning tasks, and technical writing.

Launched Codex, our code generation CLI tool.

Read the OpenAI changelog
Cloud Changelog

Announcements from AWS, Google Cloud, Azure, Cloudflare and the main AI providers in one searchable changelog, with daily, weekly and monthly digests.

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