Codex
2 entries between August 2021 and April 2025.
Every entry
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OpenAI ships o3, o4-mini, and the Codex CLI coding agent
OpenAI released its o3 and o4-mini reasoning models on 16 April 2025 together with Codex CLI, an open-source coding agent that runs in a developer’s terminal, reads and edits project files, runs shell commands, and connects to external tools through the Model Context Protocol.
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OpenAI announces Codex, a code-generating version of GPT-3
OpenAI announced Codex on 10 August 2021 and opened a private beta. The model, a version of GPT-3 fine-tuned on public source code, turned plain-English instructions into working code across several programming languages in live demonstrations.