Claude Opus 4.6 (Fast) vs GPT-5.4 Nano
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 4.6 (Fast) vs GPT-5.4 Nano: side by side
| Spec | Claude Opus 4.6 (Fast) | GPT-5.4 Nano | Winner |
|---|---|---|---|
| Intelligence | 43.7 | 38.2 | Claude Opus 4.6 (Fast) |
| Output speed | 43 t/s | 151 t/s | GPT-5.4 Nano |
| Output price | $150.00/1M | $1.25/1M | GPT-5.4 Nano |
| Context | 1000K | 400K | Claude Opus 4.6 (Fast) |
| Params | — | — | Tie |
| Provider | Anthropic | OpenAI | Tie |
Claude Opus 4.6 (Fast)
Pros
- +Strong reasoning depth
- +Effective large-context handling
- +Safety-conscious responses
Cons
- –May refuse borderline requests
- –Conservative output style
- –Vision limited to static images
GPT-5.4 Nano
Pros
- +Very large 400k token context
- +Handles file, image, and text inputs
- +Multimodal flexibility
Cons
- –Nano size may limit depth on complex tasks
- –No audio or video modalities
Frequently asked questions
It depends on your needs. Claude Opus 4.6 (Fast) and GPT-5.4 Nano are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.