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About

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.

About

Our goal at Liquid is to build the most capable AI systems to solve problems at every scale, such that users can build, access, and control their AI solutions. This is to ensure that AI will be meaningfully, reliably, and efficiently integrated at all enterprises. Long term, Liquid will create and deploy frontier-AI-powered solutions that are available to everyone. We build white-box models within a white-box organization.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

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

Audience

Anyone seeking a solution to build capable and efficient general-purpose AI systems at every scale

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$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 $0.20 per million tokens
Free Version Not Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

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.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

Liquid AI
Founded: 2023
United States
www.liquid.ai/

Alternatives

Alternatives

MiniMax M3

MiniMax M3

MiniMax
GLM-5

GLM-5

Z.ai
Claude Sonnet 4

Claude Sonnet 4

Anthropic

Categories

AI Coding Models Supported
AI Models Supported
AI Vision Models Supported
Foundation Models Supported
Multimodal Models Supported

Categories

Integrations

Augment Code Supported
BLACKBOX AI Supported
Brokk Supported
ClickUp Brain Supported
Flowise Supported
GoLand Supported
Java Supported
JetBrains Junie Supported
Liquid Apollo Not Supported
PowerShell Supported
PyCharm Supported
React Supported
Simtheory Supported
Thread Deck Supported
Twigg Supported
TypeScript Supported
Verdent Supported
WebStorm Supported
XML Supported
Yonoo Supported

Integrations

Augment Code Not Supported
BLACKBOX AI Not Supported
Brokk Not Supported
ClickUp Brain Not Supported
Flowise Not Supported
GoLand Not Supported
Java Not Supported
JetBrains Junie Not Supported
Liquid Apollo Supported
PowerShell Not Supported
PyCharm Not Supported
React Not Supported
Simtheory Not Supported
Thread Deck Not Supported
Twigg Not Supported
TypeScript Not Supported
Verdent Not Supported
WebStorm Not Supported
XML Not Supported
Yonoo Not Supported
Claim Claude Sonnet 5.5 and update features and information
Claim Claude Sonnet 5.5 and update features and information
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