GPT-5.3-Codex
Released 2026-02 · reasoning · 400K tokens · 3 benchmarks
Editorial notes
Lanzado 5 febrero 2026. Coding-specialist agentic 25% mas rapido que GPT-5.2-Codex. Combina coding frontier con reasoning de 5.2. Primer modelo OpenAI clasificado "High" en Cybersecurity (Preparedness Framework). GA en GitHub Copilot 9 feb 2026. Pricing $1.75/$14 per MTok.
Spec sheet
- Company
- OpenAI
- Country
- US
- Type
- reasoning
- Release
- 2026-02
- Context
- 400K tokens
- Slug
- gpt-5-3-codex
Benchmarks (3)
Cite this model
BibTeX · APA
BibTeX
@misc{frontier-gpt-5-3-codex,
title = {GPT-5.3-Codex},
author = {{OpenAI}},
year = {2026},
note = {Frontier Benchmarks AI atlas. Accessed 2026-05-08},
url = {https://frontierbenchmarks.com/models/gpt-5-3-codex}
} APA
OpenAI (2026). GPT-5.3-Codex [Large language model]. Frontier Benchmarks AI. Retrieved 2026-05-08, from https://frontierbenchmarks.com/models/gpt-5-3-codex
Citation reflects the atlas page, not the original model paper. For the paper, see the "Resources" section above.