Skip to content
Alpha
  • Models
  • Rankings
  • Ori
Talk to sales

Footer

OpenRouterOpenRouter
© 2026 OpenRouter, Inc

Product

  • Chat
  • Rankings
  • Benchmarks
  • Apps
  • Discover
  • Models
  • Ori
  • Collections
  • Providers
  • Tools
  • Pricing
  • Business
  • Enterprise
  • Labs

Company

  • About
  • Blog
  • Customers
  • Careers
    Hiring
  • Privacy
  • Terms of Service
  • Trust Center
  • Support
  • Works With OR
  • Data
  • Brand

Developer

  • Documentation
  • API Reference
  • Developer Platform
  • Status
  • AI Site Map

Connect

  • Discord
  • GitHub
  • LinkedIn
  • X
  • YouTube
Favicon for anthropic

Anthropic: Claude Opus 4.6 (Fast)

anthropic/claude-opus-4.6-fast

Fast-mode variant of Opus 4.6 - identical capabilities with higher output speed at premium 6x pricing.

Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-modeOpens in new tab

Modalities
Context
1.0M
Released
Apr 7, 2026
ActivityDocumentationFAQExplore

Activity

Token volume and request traffic to this model over time.

Not currently available through EU in-region routing. In-region routing docs

Documentation

Guides, cookbooks, blog posts, and tools for building with Anthropic: Claude Opus 4.6 (Fast) on OpenRouter.

  • Claude 4.6 Migration GuideCookbook

Explore more models

AI Models with Vision: Multimodal LLMs for Image UnderstandingCollectionAI Model RankingsRanking

Frequently asked questions

Fast-mode variant of Opus 4.6 - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-modeOpens in new tab

The Claude Opus 4.6 (Fast) documentation on OpenRouter includes the Claude 4.6 Migration Guide cookbook. The quickstart covers API keys and your first request, and the API reference lists every parameter.

Claude Opus 4.6 (Fast) has a 1,000,000 token context window.

Claude Opus 4.6 (Fast) accepts text, images, and files such as PDFs as input and returns text.

Claude Haiku 5.5, Claude Sonnet 5.5, Claude Opus 5.5 and 12 more are other text models from Anthropic.

Claude Opus 4.6 (Fast) was released on April 7, 2026.