Audience

Software developers, AI engineers, researchers, analysts, legal and financial professionals, enterprises, and other organizations that need a high-capability model for coding, knowledge work, computer use, and long-running agentic workflows

About Claude Opus 5.5

Claude Opus 5.5 is Anthropic’s advanced AI model for agentic coding, complex knowledge work, computer use, research, and long-running professional tasks. It is designed to handle large codebases, multi-step workflows, financial analysis, document creation, software audits, and other demanding workloads with improved efficiency over Claude Opus 5. Anthropic reports that Opus 5.5 uses fewer tokens per task, produces output more than 30% faster, and costs less to run than its predecessor. The model also improves communication quality by putting important information first, reducing unnecessary jargon, and following writing instructions more consistently. Safety enhancements include stronger prompt-injection resistance, action screening, sandboxing support, code review, behavioral alignment testing, and safeguards for high-risk cybersecurity & biology. Claude Opus 5.5 is available through Claude, Claude Code, the Claude Platform API, Amazon Web Services, Google Cloud, and Microsoft Azure.

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Pricing

Starting Price:
$4 per 1M tokens (input)
Pricing Details:
$4 per million input tokens and $20 per million output tokens.

Cache reads, which account for most costs in agentic and coding workloads, are priced at just $0.20 per million tokens which is 60% cheaper than Opus 5. Opus 5.5 also delivers output over 30% faster than its predecessor.

Integrations

API:
Yes, Claude Opus 5.5 offers API access
See Integrations

Ratings/Reviews - 1 User Review

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
More Reviews for Claude Opus 5.5 Write a Review

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Videos and Screen Captures

Claude Opus 5.5 Screenshot 1
Claude Opus 5.5 Screenshot 1 Claude Opus 5.5 Screenshot 2 Claude Opus 5.5 Screenshot 3 Claude Opus 5.5 Screenshot 4
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Product Details

Platforms Supported
Cloud
Training
Documentation
Support
Online

Claude Opus 5.5 Frequently Asked Questions

Q: What kinds of users and organization types does Claude Opus 5.5 work with?
Claude Opus 5.5 works with these users and organization types: Mid Size Business, Small Business, Enterprise, Freelance, Nonprofit, Government, and Startup.
Q: What languages does Claude Opus 5.5 support in their product?
Claude Opus 5.5 supports these languages: English.
Q: What kind of support options does Claude Opus 5.5 offer?
Claude Opus 5.5 offers support via online.
Q: What other applications or services does Claude Opus 5.5 integrate with?
Claude Opus 5.5 integrates with: AgentSea, Vercel AI Gateway, AiAssistWorks, Aider, Amazon Bedrock, Amp, Anything, App0, Augment Code, Microsoft Foundry, Bash, Biela.dev, Bind AI, BLACKBOX AI, Bolt.new, ClickUp Brain, Brokk, Buda, Shipper.now, C, C++, C#, Charlie, Cheaper Inference, and Cherry Studio and more.
Q: Does Claude Opus 5.5 have an API?
Yes, Claude Opus 5.5 has an API.
Q: What type of training does Claude Opus 5.5 provide?
Claude Opus 5.5 provides training in the form of documentation.
Q: How much does Claude Opus 5.5 cost?
Pricing for Claude Opus 5.5 starts at $4 per 1M tokens (input).

Claude Opus 5.5 Product Features

Claude Opus 5.5 Verified User Reviews

Write a Review
  • A Claude Opus 5.5 User
    CTO
    Used the software for: Less than 6 months
    Frequency of Use: Daily
    User Role: User
    Company Size: 26 - 99
    Design 5 out of 5 stars
    Ease 5 out of 5 stars
    Features 5 out of 5 stars
    Pricing 4 out of 5 stars
    Probability You Would Recommend? 8 out of 10

    "Opus 5.5 is GREAT"

    5 out of 5 stars Posted 2026-09-23

    Pros: After using it, the biggest thing I notice is how much better it is at sustained work. It stays organized across long coding sessions, multi-file changes, research tasks, and agent workflows without needing nearly as much babysitting. The coding performance is excellent. Anthropic reports 54.6% on FrontierCode 1.1 at default effort, ahead of GPT-6 Astra’s reported 53.3%, and I can see why. It is especially good at understanding a large task, making sensible changes, and avoiding unnecessary edits. I also really like the efficiency. At $4 per million input tokens and $20 per million output tokens, plus much cheaper cache reads, Opus 5.5 is easier to use heavily than Opus 5. Anthropic says typical workloads come out around 40% cheaper overall. Another improvement is the writing. It is noticeably less verbose and easier to follow, which matters a lot during long sessions when I need to quickly understand what the model changed and why.

    Cons: The main downside is that it is still a premium model, so I would not waste it on every trivial task. And like any coding agent, I still review diffs, run tests, and keep permissions tight.

    Overall: Overall, Claude Opus 5.5 is one of the best models I have used for serious coding and long-running agent work. It feels faster, more efficient, and more dependable than Opus 5 without giving up the depth I want from a top-tier model.

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