Claude Sonnet 5.5 Reviews & Ratings

Claude Sonnet 5.5

5.0 out of 5 stars

Ratings and Reviews 1 Rating

Total 5 out of 5 stars
ease 5 out of 5 stars
features 5 out of 5 stars

Ratings and Reviews 0 Ratings

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ease 0 out of 5 stars
features 0 out of 5 stars
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What is Claude Sonnet 5.5?

Claude Sonnet 5.5 is Anthropic’s faster, lower-cost Claude 5.5 model for well-scoped professional work, software development, agentic workflows, and content creation. Anthropic positions it below Claude Opus 5.5 for the most complex open-ended work, but says it can perform comparably on some benchmarks when run at higher effort settings. The model delivers a particularly large improvement in coding, including a 70.6% result on Terminal-Bench 4.0, 46.2% on FrontierCode at Max effort, and 55.5% on CursorBench 4.0. It also scores 1844 on GDPval-AA, 1811 on AA-Briefcase, 64.5% on Humanity’s Last Exam with tools, and 80.1% on OSWorld 2.1 partial. Anthropic reports that Sonnet 5.5 is better at long-horizon work, image understanding, collaboration, and codebase comprehension than Sonnet 5. The company also highlights design-oriented improvements, including the ability to produce polished documents, spreadsheets, slides, and user interfaces with less editing. Sonnet 5.5 generates output more than 30% faster than its predecessor and is Anthropic’s fastest Sonnet model to date. Although its listed token prices are unchanged from Sonnet 5, Anthropic says greater token efficiency can reduce per-task cost by up to 30%. Pricing is $2 per million input tokens, $10 per million output tokens, $2.50 per million cache-write tokens, and $0.20 per million cache-read tokens. The model includes cyber safeguards, biology safeguards, reasoning-extraction protections, and preserved-thinking controls, with some higher-risk cyber requests falling back to Sonnet 5. Claude Sonnet 5.5 is available with zero data retention across Claude products, the Claude Platform, AWS, Google Cloud, and Microsoft Azure under the model name claude-sonnet-5-5.

What is Ante?

Ante is an autonomous coding assistant that seamlessly integrates into your terminal, managing its functions without external input. This lightweight Rust binary, around 15MB, operates without any external runtime dependencies and can connect to more than 12 providers or run offline with local GGUF models. It is regularly assessed in a public environment, maintaining its status as the leading agent on Terminal-Bench 2.1, with all performance results tied to downloadable and verifiable builds for enhanced transparency. This commitment to openness guarantees that users can count on dependable and efficient coding assistance whenever they require it, promoting confidence in its capabilities. Additionally, Ante’s design prioritizes user convenience, making it a valuable tool for developers seeking streamlined coding processes.

Media

Media

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Integrations Supported

AgentSea
Bolt.new
C#
Cheaper Inference
Cherry Studio
Claude Duet
Claude Slides
Databricks
Doraverse
Elixir
HTML
JetBrains Junie
Model Context Protocol (MCP)
Muses
MyClaw
OpenClaw
PHP
Pi Agent
Xcode
YAML

Integrations Supported

API Availability

Has API

API Availability

Pricing Information

$2 per 1M tokens (input)
$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

Pricing Information

$0
Free Version

Supported Platforms

SaaS

Supported Platforms

Not specified

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub

Training Options

Not specified

Company Facts

Organization Name

Anthropic

Date Founded

2021

Company Location

United States

Company Website

claude.ai

Company Facts

Organization Name

Antigma Labs

Date Founded

2026

Company Location

China

Company Website

antigma.ai

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

AI Vision Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Multimodal Models

Not specified

Categories and Features

AI Coding Agents

Not specified

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