Claude Opus 4.6 (Fast) vs GPT-5 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.
Quick verdict: which should you choose?
Choose Claude Opus 4.6 (Fast) if you need
- ✓Strong reasoning depth and safety-conscious outputs on large-scale text/image tasks
- ✓Maximum 1M-token context with effective large-context handling
- ✓Fast inference at 42.94 t/s and known intelligence index of 52.9
- ✓Static image vision within a conservative, reliable response style
Choose GPT-5 Pro if you need
- ✓Lower price at $120 per 1M tokens for budget-sensitive multimodal workloads
- ✓Strong integration of text, image, and file data in document-heavy workflows
- ✓Flexible reasoning over extended context with very large multimodal inputs
- ✓Handling of file modalities beyond static images
Verdict
Claude Opus 4.6 (Fast) leads on measurable intelligence (52.9), speed (42.94 t/s), and context length (1M tokens) while GPT-5 Pro undercuts it on price ($120 vs $150 per 1M) and emphasizes file integration plus document workflows. Claude's documented strengths in reasoning depth and large-context handling contrast with GPT-5 Pro's focus on cross-modal inputs where metrics remain unreported. Neither model dominates outright; selection hinges on whether quantified performance or lower cost plus file handling matters more.
Claude Opus 4.6 (Fast) vs GPT-5 Pro: side by side
| Spec | Claude Opus 4.6 (Fast) | GPT-5 Pro | Winner |
|---|---|---|---|
| Intelligence | 43.7 | — | Tie |
| Output speed | 43 t/s | — | Tie |
| Output price | $150.00/1M | $120.00/1M | GPT-5 Pro |
| Context | 1000K | 400K | Claude Opus 4.6 (Fast) |
| Params | — | — | Tie |
| Provider | Anthropic | OpenAI | Tie |
Detailed analysis
Pricing
Winner: GPT-5 ProGPT-5 Pro costs $120 per 1M tokens while Claude Opus 4.6 (Fast) costs $150 per 1M tokens. The $30 difference favors GPT-5 Pro for high-volume usage. No other cost factors are provided.
Context Length
Winner: Claude Opus 4.6 (Fast)Claude Opus 4.6 (Fast) supports 1,000,000 tokens versus GPT-5 Pro's 400,000 tokens. This gives Claude twice the context window for large-scale tasks. Both models list effective handling of extended context in their strengths.
Speed & Intelligence
Winner: Claude Opus 4.6 (Fast)Claude reports an intelligence index of 52.9 and output speed of 42.94 t/s; GPT-5 Pro lists neither metric. Claude's strengths explicitly include fast inference for its class and strong reasoning depth. GPT-5 Pro's performance data remain unreported.
Multimodal Capabilities
Winner: GPT-5 ProGPT-5 Pro strengths highlight integration of text, image, and file data plus suitability for document workflows. Claude limits vision to static images and lists no file support. Both handle large-scale multimodal inputs but differ in modality breadth.
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 Pro
Pros
- +Handles very large inputs across modalities
- +Strong integration of text, image, and file data
- +Suitable for document-heavy workflows
Cons
- –No native real-time information access
- –Performance can vary on highly specialized topics
- –Higher computational cost with maximum context
Summary: Claude Opus 4.6 (Fast) vs GPT-5 Pro
Select Claude Opus 4.6 (Fast) when known intelligence, speed, and maximum context are priorities. Choose GPT-5 Pro when lower price and file-inclusive multimodal workflows matter most. The models trade measurable performance for cost and modality flexibility.
Frequently asked questions
Claude Opus 4.6 (Fast) shows superior documented intelligence, speed, and context; GPT-5 Pro is better on price and file handling. No single winner exists without specific priorities.