GPT-4 Turbo vs GPT-5.3-Codex
OpenAI GPT-4 Turbo | OpenAI GPT-5.3-Codex | |
|---|---|---|
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | Nov 6 2023 | Feb 5 2026 |
| Access | Proprietary | Proprietary |
| Specifications | ||
Context window | 128k | — |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 24% |
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | — | 83% |
| Timeline | ||
| Release gap | GPT-4 Turbo shipped 822 days before GPT-5.3-Codex | |
Which is better: GPT-4 Turbo or GPT-5.3-Codex?
GPT-4 Turbo and GPT-5.3-Codex don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4 Turbo shipped 822 days before GPT-5.3-Codex, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — GPT-4 Turbo and GPT-5.3-Codex don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-4 Turbo was released by OpenAI on Nov 6 2023.
GPT-5.3-Codex was released by OpenAI on Feb 5 2026.
Other comparisons
GPT-4 Turbo vs Claude Sonnet 5GPT-5.3-Codex vs Claude Sonnet 5GPT-4 Turbo vs Gemini OmniGPT-5.3-Codex vs Gemini OmniGPT-4 Turbo vs Muse Spark 1.1GPT-5.3-Codex vs Muse Spark 1.1GPT-4 Turbo vs Grok 4.5GPT-5.3-Codex vs Grok 4.5GPT-4 Turbo vs DeepSeek-V4-ProGPT-5.3-Codex vs DeepSeek-V4-ProGPT-4 Turbo vs Mistral Medium 3.5GPT-5.3-Codex vs Mistral Medium 3.5