From the source

What a task costs on Opus 5.5

Opus 5.5 costs 20% less per token than Opus 5 on input and output.

Anthropic announced pricing for Claude Opus 5.5, which costs less per token than Opus 5.

Input and output tokens are 20% cheaper, and cache reads are 60% cheaper.

The post explains how task costs vary based on the number of turns, cache hit rates, output token usage, and model selection.

From the source
Every price line is lower. Input and output tokens are 20% cheaper than on Opus 5. Cache reads are 60% cheaper.
claude.com

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Anthropic unveils Claude Opus 5.5

Anthropic releases Opus 5.5 and cuts pricing by 20%. Your agent calls might secretly get routed to an older model.

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ModelsOpus 5.5

Announced: 22 Sep 2026
Detected: 22 Sep 2026 16:57 UTC
Pricing: Opus 5.5: $4 per million input tokens, $20 per million output tokens, $0.20 per million cache reads. Input and output tokens are 20% cheaper than Opus 5. Cache reads are 60% cheaper than Opus 5.

Amazon · 2 Oct

Add secure Web Search to Claude Desktop with Amazon Bedrock AgentCore