From $10 usage-based🇺🇸
Anthropic's model for demanding reasoning and long-horizon agentic work, with thinking always on.
Claude Opus 5.5 AI features and pricing (October 2026)
Anthropic's frontier model for long-running agentic coding and knowledge work, with a one-million-token context.
Usage-based
from $4 usage-based
Pricing details
$4 per million input tokens and $20 per million output tokens. Batch is 50 percent cheaper; US-only inference costs 1.1 times the standard rate.
What is Claude Opus 5.5?
Claude Opus 5.5 is Anthropic's recommended starting model for most workloads, built for long-running agentic coding and knowledge work, and available through the Claude API and major cloud platforms.
Opus 5.5 accepts text and images, outputs text and supports tool use in many languages. It has a context window of one million tokens, up to 128,000 output tokens and a reliable knowledge cutoff of June 2026. Thinking is adaptive and always on, with medium effort as default. The model is available on the Claude API, Amazon Bedrock, Google Cloud, Microsoft Foundry and Claude Platform on AWS, with retirement not before September 22, 2027.
Claude Opus 5.5 AI features and use cases
- Runs long agentic tasksOpus 5.5 is designed to keep working across many steps with tools. Development teams hand over larger coding or research tasks and review the result.
- Handles knowledge work on large inputsOne million tokens of context let the model read long reports, codebases or contract sets at once. Analysts ask questions across the whole material.
- Reads charts and scanned pagesImage input lets the model interpret diagrams, screenshots and scanned documents. Teams extract content from material that is not plain text.
What sets Claude Opus 5.5 apart
- Available on five platforms, including Amazon Bedrock, Google Cloud and Microsoft Foundry, which lets buyers stay with their cloud provider.
- Prompt cache reads cost 5 percent of the base input price.
Where Claude Opus 5.5 is strongest
United States Available internationally
Anthropic PBC is registered in San Francisco.
Questions to ask before you buy Claude Opus 5.5
Billing is per token, with batch requests at half price and cached prompts much cheaper. On the Claude API, workspace data is stored in the US; inference can be pinned to the US for 1.1 times the price, while the global default may run anywhere. Amazon Bedrock and Google Cloud offer their own regional endpoints. In the US, check Colorado and Illinois rules if outputs feed decisions about people.
Claude Opus 5.5 reviews
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Questions about Claude Opus 5.5
What does Claude Opus 5.5 cost?
$4 per million input tokens and $20 per million output tokens on the Claude API, with 50 percent off for batch requests.
Can I use Opus 5.5 via my cloud provider?
Yes. Anthropic lists Amazon Bedrock, Google Cloud, Microsoft Foundry and Claude Platform on AWS next to the Claude API.
How long will Opus 5.5 stay available?
Anthropic commits to retirement not sooner than September 22, 2027 on its own platforms.
Claude Opus 5.5 update historyno updates yet
No changes recorded for Claude Opus 5.5 yet.
Changes the vendor made and confirmed user reports, each checked against the vendor's own pages. We review every tool monthly.
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