GPT-5.1-Codex-Mini vs GPT-5.3-Codex
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
GPT-5.1-Codex-Mini vs GPT-5.3-Codex: side by side
| Spec | GPT-5.1-Codex-Mini | GPT-5.3-Codex | Winner |
|---|---|---|---|
| Intelligence | 38.6 | 53.6 | GPT-5.3-Codex |
| Output speed | 215 t/s | 101 t/s | GPT-5.1-Codex-Mini |
| Output price | $2.00/1M | $14.00/1M | GPT-5.1-Codex-Mini |
| Context | 400K | 400K | Tie |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | OpenAI | Tie |
GPT-5.1-Codex-Mini
Pros
- +Very large context window
- +Strong coding specialization
- +Native image + text support
- +Suitable for extended technical workflows
Cons
- –Mini variant may have reduced depth on complex reasoning
- –Limited to image and text modalities
- –Trade-off between context size and response speed
GPT-5.3-Codex
Pros
- +Specialized for programming workflows
- +Extensive context handling
- +Support for diverse input types
Cons
- –Narrower focus than general-purpose models
- –Performance tied to input quality
Frequently asked questions
It depends on your needs. GPT-5.1-Codex-Mini and GPT-5.3-Codex are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.