Skip to main content
Release date: September 22, 2026 Anthropic introduces Claude Opus 5.5 as the first model in the Claude 5.5 family. Anthropic reports improvements over Opus 5 on long-running coding and professional work, with clearer communication across extended sessions. Claude Opus 5.5 is now available on BetterToken. Select the Claude provider, set the Base URL to https://bettertoken.ai, and use claude-opus-5-5 as the model ID. Check the model plaza for current availability and pricing.

​
Highlights

  • Long-running coding agents: use it for complex repository changes, audits, and multi-step work.
  • Production-oriented work: Anthropic recommends it for production-ready code, complex documents, and computer use.
  • Clearer collaboration: Anthropic reports more direct, easier-to-follow explanations than Opus 5 in long sessions.

​
Connect it

  1. Create a BetterToken API Key.
  2. Select the Claude provider and use https://bettertoken.ai as the Base URL.
  3. Set the model ID to claude-opus-5-5.
  4. Test a representative task before moving production traffic.
Use the Claude Code setup guide for client setup, or compare alternatives in the model selection guide.

​
Official sources