Anthropic released Claude Opus 5.5 on September 22, 2026, priced at $4 per million input tokens and $20 per million output tokens, with a 1M-token context window and 128K-token max output.
The model is available on the Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry, and Claude Platform on AWS, and Anthropic says it is raising five-hour usage limits on the Pro, Max, Team, and seat-based Enterprise plans alongside the release.
How we checked this · the sources9 checked facts from 2 sources.
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Introducing Claude Opus 5.5 · Anthropic · archived copy
- Anthropic released Claude Opus 5.5 on September 22, 2026
checked 22 Sep 2026September 22, 2026
- Anthropic says it is raising five-hour usage limits on the Pro, Max, Team, and seat-based Enterprise plans alongside Claude Opus 5.5
Toned downchecked 22 Sep 2026In addition to the price drop, we’re increasing five-hour usage limits on Pro, Max, Team, and seat-based Enterprise plans.
- Anthropic released Claude Opus 5.5 on September 22, 2026
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https://platform.claude.com/docs/en/models/opus-5-5/overview · archived copy
- The model id for Claude Opus 5.5 is claude-opus-5-5
checked 22 Sep 2026Model ID: claude-opus-5-5
- Claude Opus 5.5 has a 1M token context window
checked 22 Sep 2026Context window: 1M tokens
- Claude Opus 5.5 has a max output of 128K tokens
checked 22 Sep 2026Max output: 128K tokens
- Claude Opus 5.5 input pricing is $4 per million tokens
Toned downchecked 22 Sep 2026Input pricing: $4 / MTok
- Claude Opus 5.5 output pricing is $20 per million tokens
Toned downchecked 22 Sep 2026Output pricing: $20 / MTok
- Claude Opus 5.5 is available on the Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry, and Claude Platform on AWS
checked 22 Sep 2026Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry, Claude Platform on AWS
- The Claude Opus 5.5 model page lists its retirement as not sooner than September 22, 2027
Toned downchecked 22 Sep 2026Not sooner than September 22, 2027
- The model id for Claude Opus 5.5 is claude-opus-5-5