GPT-5.3 Codex
GPT-5.3 Codex is an AI model published by OpenAI, released on 2026-02-05, for Coding model, and 400K context length, under the 不开源 license, with a 81.40 score on IC SWE-Lancer(Diamond).
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
Model basics
Open source & experience
Official resources
API details
Benchmark Results
GPT-5.3 Codex currently shows benchmark results led by Terminal Bench 2.0 (3 / 46, score 77.30), IC SWE-Lancer(Diamond) (1 / 8, score 81.40), LiveBench (25 / 115, score 72.76). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.
Coding and Software Engineer
2 evaluationsGeneral Knowledge
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Model Overview
GPT-5.3 Codex is an AI model published by OpenAI, released on 2026-02-05, for Coding model, and 400K context length, under the 不开源 license, with a 81.40 score on IC SWE-Lancer(Diamond).
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