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GPT 5.3 Codex Family - Related Models & Variants | AI Stats

GPT 5.3 Codex

GPT 5.3 Codex

GPT 5.3 Codex

OpenAI

Overview Timeline Benchmarks Providers Quickstart Performance

GPT 5.3 family

2 models

We track 2 siblings across 1 provider. Launch window Feb 2026 - Feb 2026.

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OpenAI

OpenAI

GPT 5.3 Codex

OpenAI

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OpenAI

OpenAI

GPT 5.3 Codex OpenAI

Available

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Release window

Feb 2026

Timeline

about 2 months ago

OpenAI

OpenAI

GPT 5.3 Codex Spark OpenAI

Available

Release window

Feb 2026

Timeline

about 2 months ago