GPT-5.1-Codex-Max vs GPT-5.4 Pro
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-Max vs GPT-5.4 Pro: side by side
| Spec | GPT-5.1-Codex-Max | GPT-5.4 Pro | Winner |
|---|---|---|---|
| Intelligence | — | — | Tie |
| Output speed | — | — | Tie |
| Output price | $10.00/1M | $180.00/1M | GPT-5.1-Codex-Max |
| Context | 400K | 1050K | GPT-5.4 Pro |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | OpenAI | Tie |
GPT-5.1-Codex-Max
Pros
- +Handles very large contexts
- +Strong coding focus
- +Combines text and image inputs
- +Suitable for complex technical workflows
Cons
- –Limited to text and image modalities
- –High resource demands for large contexts
- –No support for other media types
GPT-5.4 Pro
Pros
- +Handles very large inputs across modalities
- +Strong integration of text, image, and file data
- +Advanced reasoning over extended contexts
- +Versatile for document and visual tasks
Cons
- –Higher latency on maximum-length inputs
- –No native audio or video support
- –Proprietary access with usage constraints
Frequently asked questions
It depends on your needs. GPT-5.1-Codex-Max and GPT-5.4 Pro are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.