Audience

Developers, knowledge workers, analysts, business teams, and organizations that want a fast, capable, and relatively cost-efficient AI model for coding, professional work, design-heavy tasks, document creation, and everyday agentic workflows

About Claude Sonnet 5.5

Claude Sonnet 5.5 is Anthropic’s mid-tier Claude 5.5 model designed for fast, well-scoped everyday work, coding, and professional document creation. Anthropic says it runs more than 30% faster than Claude Sonnet 5 and typically costs up to 30% less per task while keeping the same base token pricing. The model shows major gains in agentic coding, with a 70.6% score on Terminal-Bench 4.0 and stronger performance on FrontierCode and CursorBench than its predecessor. Sonnet 5.5 also performs strongly on knowledge work, computer use, chart understanding, and long-horizon tasks, in some cases approaching Claude Opus 5.5 at higher effort settings. Anthropic positions it as especially useful for debugging, routine coding, collaboration, and producing polished documents, slides, spreadsheets, and user interfaces. Claude Sonnet 5.5 is available across Anthropic’s platforms as well as AWS, Google Cloud, and Microsoft Azure.

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Pricing

Starting Price:
$2 per 1M tokens (input)
Pricing Details:
$2 per million input tokens and $10 per million output tokens.

Cache reads, which account for most costs in agentic and coding workloads, are priced at just $0.10 per million tokens

Integrations

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

Ratings/Reviews - 1 User Review

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

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Videos and Screen Captures

Claude Sonnet 5.5 Screenshot 1
Claude Sonnet 5.5 Screenshot 1
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Product Details

Platforms Supported
Cloud
Training
Documentation
Support
Online

Claude Sonnet 5.5 Frequently Asked Questions

Q: What kinds of users and organization types does Claude Sonnet 5.5 work with?
Claude Sonnet 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 Sonnet 5.5 support in their product?
Claude Sonnet 5.5 supports these languages: English.
Q: What kind of support options does Claude Sonnet 5.5 offer?
Claude Sonnet 5.5 offers support via online.
Q: What other applications or services does Claude Sonnet 5.5 integrate with?
Claude Sonnet 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 Sonnet 5.5 have an API?
Yes, Claude Sonnet 5.5 has an API.
Q: What type of training does Claude Sonnet 5.5 provide?
Claude Sonnet 5.5 provides training in the form of documentation.
Q: How much does Claude Sonnet 5.5 cost?
Pricing for Claude Sonnet 5.5 starts at $2 per 1M tokens (input).

Claude Sonnet 5.5 Product Features

Claude Sonnet 5.5 Verified User Reviews

Write a Review
  • A Claude Sonnet 5.5 User
    CTO
    Used the software for: Less than 6 months
    Frequency of Use: Daily
    User Role: User, Administrator
    Company Size: 26 - 99
    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

    "Really fast/efficient and good reasoning abilities"

    5 out of 5 stars Posted 2026-09-28

    Pros: I can give it a normal development task and it tends to get to the answer with less wandering, fewer unnecessary tool calls, and less back-and-forth than Sonnet 5. Coding is where I notice the improvement the most. It is really good for feature work, fixing bugs, refactoring, and the everyday engineering tasks where I want something fast and capable without automatically reaching for Opus. The speed is another big advantage. Sonnet 5.5 feels better suited to rapid iteration because I can make a change, test it, adjust the prompt, and keep moving without the slower pace I sometimes get from heavier reasoning models.

    Cons: The main downside is that I would still move up to Opus 5.5 for really messy architecture problems, long autonomous agent runs, or tasks where I want maximum reasoning depth.

    Overall: Claude Sonnet 5.5 is probably the model I would want as my everyday coding workhorse. It is fast, efficient, strong at practical development tasks, and capable enough that I rarely feel like I am sacrificing much by not using a heavier model.

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