Claude Sonnet 5.5 Reviews & Ratings

Claude Sonnet 5.5

5.0 out of 5 stars

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ease 0 out of 5 stars
features 0 out of 5 stars
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Total 5 out of 5 stars
ease 5 out of 5 stars
features 5 out of 5 stars

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What is Vello AI?

Vello stands out as a remarkable platform for interacting with artificial intelligence by delivering fast, strong, and cooperative multiplayer AI chat that merges top-tier models and human collaborators all in one user-friendly space. It is designed for seamless usability across web, mobile, and desktop platforms, ensuring a quick and keyboard-centric experience that boosts productivity. By incorporating models from industry leaders such as OpenAI, Anthropic, Google, Facebook, and Cohere, along with its own innovative web and document models, Vello streamlines research processes with precise source citations and simplifies document creation, editing, and coding tasks. The platform’s team spaces are engineered to enhance collaboration between users and AI, allowing for effective teamwork in shared rooms and environments to accomplish tasks with ease. Moreover, users can create diverse AI personalities and train them with various file formats (such as PDF, DOCX, code, and CSV), enabling deployment in single or multi-persona chat settings, which leads to sophisticated workflows through alternating model responses. This adaptability not only provides a dynamic experience but also promotes a highly customizable method for leveraging AI technologies across a wide range of uses and projects. Overall, Vello empowers users to harness the full capabilities of AI while fostering a collaborative atmosphere for creativity and innovation.

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.

Media

Media

Integrations Supported

Claude
Claude Duet
Claude for Legal

Integrations Supported

Claude
Claude Duet
Claude for Legal
BLACKBOX AI
Bash
Cheaper Inference
Claude Pro
Claude Science
Clawd.run
GitHub Copilot
HTML
Muses
MyClaw
Objective-C
Skymel
Snowflake
StackAI
Sup AI
Use AI
Vellum

API Availability

API Availability

Has API

Pricing Information

$17 per month
Free Trial Offered?

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

Supported Platforms

SaaS
Windows
Mac

Supported Platforms

SaaS

Customer Service / Support

24 Hour Support
Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Vello AI

Company Location

United States

Company Website

hello.vello.ai/

Company Facts

Organization Name

Anthropic

Date Founded

2021

Company Location

United States

Company Website

claude.ai

Categories and Features

AI Tools

Not specified

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

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