Anthropic: Claude Opus 4.8 (Fast)
Analysis Summary
Anthropic: Claude Opus 4.8 (Fast) sits in the Emerging tier on our leaderboard, ranked #371 of 565 published models on overall intelligence. At $10.00 input and $50.00 output per 1M tokens, it is among the most expensive on the market. It offers an exceptionally large context window suited to long-document workflows and supports tool use, function calling, vision, and reasoning.
Editorial notes
Claude Opus 4.8 Fast from Anthropic carries the same world-class intelligence and agentic capability as the standard variant, with a 1M token context, vision, and full tool use, at a premium price point.
Assessed May 31, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Anthropic: Claude Opus 4.8 (Fast) compares
Its 1M-token context window is larger than 91% of the models we list. At $10.00 per million input tokens it is cheaper than 4% of comparable models.
About Anthropic: Claude Opus 4.8 (Fast)
Fast-mode variant of 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
Capabilities
How does Anthropic: Claude Opus 4.8 (Fast) stack up?
Compare side-by-side with other emerging models.
Model Information
| OpenRouter ID |
anthropic/claude-opus-4.8-fast
|
| Provider | anthropic |
| Release Date | May 27, 2026 |
| Context Length | 1,000,000 tokens |
| Max Completion | 128,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $10.00 | $0.010000 |
| Output | $50.00 | $0.050000 |
Live Performance
Live endpoint metrics, refreshed every 30 minutes.
Leaderboard Categories
External Resources
Frequently asked questions about Anthropic: Claude Opus 4.8 (Fast)
How much does Anthropic: Claude Opus 4.8 (Fast) cost?
Anthropic: Claude Opus 4.8 (Fast) costs $10.00 per million input tokens and $50.00 per million output tokens.
What is the context window of Anthropic: Claude Opus 4.8 (Fast)?
Anthropic: Claude Opus 4.8 (Fast) has a context window of 1,000,000 tokens (1M).
What can Anthropic: Claude Opus 4.8 (Fast) do?
Anthropic: Claude Opus 4.8 (Fast) supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Opus 4.8 (Fast)?
Anthropic: Claude Opus 4.8 (Fast) is developed by Anthropic and was released on May 27, 2026.
