Claude Opus 5 (Fast)
Fast-mode variant of [Opus 5](/anthropic/claude-opus-5) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Specifications
Technical details and pricing.
Benchmarks
4 benchmark scores from Artificial Analysis.
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
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Frequently Asked Questions
What is Claude Opus 5 (Fast) good for?
Use Claude Opus 5 (Fast) for everyday tasks like writing, summarizing, brainstorming, and getting clear explanations.
How much does Claude Opus 5 (Fast) cost?
Pricing is based on usage. Current rates are $5.00/1M tokens for input and $25.00/1M tokens for output.
Can I use Claude Opus 5 (Fast) in LLMBase Chat?
Yes. Use the chat action on this page to open Claude Opus 5 (Fast) in LLMBase Chat. Access still follows the current plan and model tier.
Does Claude Opus 5 (Fast) support images or audio?
Claude Opus 5 (Fast) can understand images.
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Benchmarks and pricing use Artificial Analysis where available. Catalog specs are used as a fallback.