Levitating - https://openai.com/index/introducing-gpt-5-3-codex/

Levitating

https://platform.claude.com/docs/en/about-claude/models/whats-new-claude-4-6

https://openai.com/index/introducing-gpt-5-3-codex/

Introducing GPT-5.3-Codex

Introducing GPT-5.3-Codex

GPT-5.3-Codex is a Codex-native agent that pairs frontier coding performance with general reasoning to support long-horizon, real-world technical work.

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