GPT-4.1 vs GPT-5.1-Codex-Mini
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-4.1 vs GPT-5.1-Codex-Mini: side by side
| Spec | GPT-4.1 | GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
| Intelligence | 26.3 | 38.6 | GPT-5.1-Codex-Mini |
| Output speed | 130 t/s | 215 t/s | GPT-5.1-Codex-Mini |
| Output price | $8.00/1M | $2.00/1M | GPT-5.1-Codex-Mini |
| Context | 1048K | 400K | GPT-4.1 |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | OpenAI | Tie |
GPT-4.1
Pros
- +Handles very large context windows
- +Processes images, text, and files together
- +Strong reasoning from OpenAI GPT lineage
- +Flexible multimodal inputs
Cons
- –Closed-source with no public weights
- –May hallucinate on complex tasks
- –High compute cost for full context
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
Frequently asked questions
It depends on your needs. GPT-4.1 and GPT-5.1-Codex-Mini are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.