Claude Sonnet 5

Claude Sonnet 5

Anthropic
Hy4

Hy4

Tencent
+
+

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About

Claude Sonnet 5 is Anthropic's latest AI model, designed to deliver stronger agentic capabilities for coding, reasoning, tool use, and knowledge work while maintaining the efficiency of the Sonnet family. The model can independently plan tasks, use external tools such as browsers and terminals, and complete complex workflows that previously required larger AI models. Sonnet 5 significantly improves upon Claude Sonnet 4.6 with better reasoning, coding performance, reduced hallucinations, stronger safety behavior, and more effective autonomous task execution. It is available across Claude plans and through the Claude API with OpenAI-style developer access for application integration. Anthropic also introduced lower introductory API pricing, making Sonnet 5 a cost-effective option for developers building AI-powered products. By combining advanced agentic capabilities with improved safety and competitive pricing, Claude Sonnet 5 helps developers build more capable AI applications.

About

Hy4 preview is a new-generation open source Mixture-of-Experts flagship model built for real-world productivity tasks across software engineering, office work, game development, and scientific research. The model contains 770B total parameters with 49B activated per token and supports a 1M-token context window, giving it the capacity to work through large codebases, extensive document collections, and long multi-step tasks. Its 78-layer architecture combines Gated DeepSeek Sparse Attention with IndexCache for cross-layer sparse index reuse and identity Hyper-Connections to expand information flow between layers. A native Multi-Token Prediction layer is included for speculative decoding. Hy4 preview is designed to understand, plan, debug, and verify long-horizon engineering tasks, with additional gains in front-end visual quality and interaction design.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Claude Sonnet 5 is designed for software developers, AI engineers, enterprises, researchers, and organizations building AI-powered applications, coding assistants, autonomous agents, and advanced business automation workflows

Audience

Developers, researchers, and technical professionals seeking an AI model for coding, document work, game development, scientific reasoning, and complex productivity tasks

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$2 per 1M tokens (input)
$2 per million input tokens and $10 per million output tokens
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 4.0 / 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

  • Claude Sonnet 5 has become my default model for agentic work because it stays focused over long, multi-step tasks without constantly needing course correction. I can hand it a large objective, let it break the work into steps, and it generally makes sensible decisions along the way. Its coding ability is excellent, but what stands out even more is how well it reasons through an entire project instead of solving isolated problems. Whether it's debugging, refactoring, researching APIs, or generating documentation, it feels like it's optimizing for the end result rather than just the next response. Anthropic also positions Sonnet 5 specifically for autonomous browsing, planning, coding, and knowledge work, making it a strong fit for agentic workflows. I also appreciate how consistent it is. Long-running conversations remain coherent, instructions stick, and it rarely loses track of the bigger picture, which is exactly what I want when running autonomous agents.

Cons

  • Like every AI model, Claude Sonnet 5 isn't perfect. It can occasionally spend too much time explaining its reasoning when I'd rather it move faster, and I still verify important code or business decisions before shipping anything to production.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

Tencent
Founded: 1998
China
hy.tencent.ai/research/hy4-preview

Alternatives

Grok 4.6

Grok 4.6

SpaceXAI

Alternatives

Grok 4.6

Grok 4.6

SpaceXAI
Claude Opus 5

Claude Opus 5

Anthropic
Claude Opus 5

Claude Opus 5

Anthropic
Claude Fable 5

Claude Fable 5

Anthropic
Claude Fable 5

Claude Fable 5

Anthropic
Claude Sonnet 4

Claude Sonnet 4

Anthropic

Categories

Categories

Integrations

AnyAPI
Augment Code
Bash
C++
CSS
Claude Code
Claude Computer Use
Claude Cowork
Claude Desktop
Claude Max
Claude Security
Cosmos
HTML
JavaScript
Kubernetes
PHP
Ruby
Tencent Hy
Viktor
YAML

Integrations

AnyAPI
Augment Code
Bash
C++
CSS
Claude Code
Claude Computer Use
Claude Cowork
Claude Desktop
Claude Max
Claude Security
Cosmos
HTML
JavaScript
Kubernetes
PHP
Ruby
Tencent Hy
Viktor
YAML
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