Claude Opus 4.8 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.
Claude Opus 4.8 vs GPT-5.1-Codex-Mini: side by side
| Spec | Claude Opus 4.8 | GPT-5.1-Codex-Mini | Winner |
|---|---|---|---|
| Intelligence | 61.4 | 38.6 | Claude Opus 4.8 |
| Output speed | 62 t/s | 215 t/s | GPT-5.1-Codex-Mini |
| Output price | $25.00/1M | $2.00/1M | GPT-5.1-Codex-Mini |
| Context | 1000K | 400K | Claude Opus 4.8 |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | Anthropic | OpenAI | Tie |
Claude Opus 4.8
Pros
- +Handles extremely long inputs effectively
- +Strong multimodal integration of text, images, and files
- +Careful and nuanced reasoning
- +Robust safety alignment
Cons
- –Higher latency on large contexts
- –Conservative response style due to safety tuning
- –May require explicit guidance for creative tasks
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. Claude Opus 4.8 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.