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AnthropicAnthropicmodel
May 28, 2026·Source

Claude Opus 4.8

Anthropic's upgraded flagship model, better at coding and agent work and more honest about its own progress, at the same price as Opus 4.7.

Details

  • About 4x less likely to overlook flaws in code than Opus 4.7, and asks clarifying questions instead of guessing on unclear tasks
  • Better at controlling a browser on its own and at long legal-document work, two areas Anthropic tested directly
  • Same price as Opus 4.7: $5 per million input tokens and $25 per million output tokens
  • Fast mode dropped to about $10 input and $50 output per million tokens, roughly 3x cheaper than before
  • Available on claude.ai, via the API as claude-opus-4-8, and on Google Vertex AI, AWS, and Microsoft

Best for

Long, multi-step coding and agent work where the model runs on its own for a while.

When to use it

You need a model that catches its own mistakes and asks before guessing on unclear tasks.

Who benefits

Developers and teams running Claude for code, research, and document-heavy work.

More from Anthropic

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