Claude Opus 4.8 (Fast)
Fast-mode variant of [Opus 4.8](/anthropic/claude-opus-4.8) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 4.8. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Specifications
Technical details and pricing.
Benchmarks
7 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 4.8 (Fast) good for?
Use Claude Opus 4.8 (Fast) for everyday tasks like writing, summarizing, brainstorming, and getting clear explanations.
How much does Claude Opus 4.8 (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 4.8 (Fast) in LLMBase Chat?
Yes. Use the chat action on this page to open Claude Opus 4.8 (Fast) in LLMBase Chat. Access still follows the current plan and model tier.
Does Claude Opus 4.8 (Fast) support images or audio?
Claude Opus 4.8 (Fast) can understand images.
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Benchmarks and pricing use Artificial Analysis where available. Catalog specs are used as a fallback.