Anthropic releases Claude Opus 5.5: lower price and first place on the Artificial Analysis index
In one sentence On September 22 Anthropic launched Claude Opus 5.5, the first model of the 5.5 family, at $4 per million input tokens and $20 output, 20% less than Opus 5. 1M-token context, 128K output, and a score of 58 on the Artificial Analysis Intelligence Index v4.3.
Anthropic introduced Claude Opus 5.5, its flagship model for agentic coding and long-running knowledge work. The main message is economic: it costs $4 per million tokens read and $20 per million tokens generated, 20% less than Opus 5.
On performance, the independent Artificial Analysis ranking put it in first place with 58 points, seven more than Opus 5. The flip side, flagged by analysts, is that the model tends to use more tokens than its predecessors, so cost per completed task stays high even as the unit price drops.
The model is available to Pro, Max, Team and Enterprise subscribers, in the API, and on AWS, Google Cloud and Microsoft clouds. For requests Anthropic considers sensitive in cybersecurity and biology, the system automatically falls back to Claude Opus 4.8.
Companies
Anthropic
Tools
Claude Opus 5.5, Claude Code
Tags
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