Claude Opus 5.5

Claude Opus 5.5

Anthropic
Hy4

Hy4

Tencent
+
+

Related Products

  • Gemini Enterprise Agent Platform
    1,161 Ratings
    Visit Website
  • JAMS Scheduler
    285 Ratings
    Visit Website
  • Retool
    598 Ratings
    Visit Website
  • Checksum.ai
    2 Ratings
    Visit Website
  • Concord
    237 Ratings
    Visit Website
  • LTX
    182 Ratings
    Visit Website
  • Evertune
    1 Rating
    Visit Website
  • Fathom
    7,880 Ratings
    Visit Website
  • Apify
    1,800 Ratings
    Visit Website
  • ZenTreasury
    9 Ratings
    Visit Website

About

Claude Opus 5.5 is Anthropic’s advanced AI model for agentic coding, complex knowledge work, computer use, research, and long-running professional tasks. It is designed to handle large codebases, multi-step workflows, financial analysis, document creation, software audits, and other demanding workloads with improved efficiency over Claude Opus 5. Anthropic reports that Opus 5.5 uses fewer tokens per task, produces output more than 30% faster, and costs less to run than its predecessor. The model also improves communication quality by putting important information first, reducing unnecessary jargon, and following writing instructions more consistently. Safety enhancements include stronger prompt-injection resistance, action screening, sandboxing support, code review, behavioral alignment testing, and safeguards for high-risk cybersecurity & biology. Claude Opus 5.5 is available through Claude, Claude Code, the Claude Platform API, Amazon Web Services, Google Cloud, and Microsoft Azure.

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 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 Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software developers, AI engineers, researchers, analysts, legal and financial professionals, enterprises, and other organizations that need a high-capability model for coding, knowledge work, computer use, and long-running agentic 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 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

$4 per 1M tokens (input)
$4 per million input tokens and $20 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 which is 60% cheaper than Opus 5. Opus 5.5 also delivers output over 30% faster than its predecessor.
Free Version Not Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

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

  • After using it, the biggest thing I notice is how much better it is at sustained work. It stays organized across long coding sessions, multi-file changes, research tasks, and agent workflows without needing nearly as much babysitting. The coding performance is excellent. Anthropic reports 54.6% on FrontierCode 1.1 at default effort, ahead of GPT-6 Astra’s reported 53.3%, and I can see why. It is especially good at understanding a large task, making sensible changes, and avoiding unnecessary edits. I also really like the efficiency. At $4 per million input tokens and $20 per million output tokens, plus much cheaper cache reads, Opus 5.5 is easier to use heavily than Opus 5. Anthropic says typical workloads come out around 40% cheaper overall. Another improvement is the writing. It is noticeably less verbose and easier to follow, which matters a lot during long sessions when I need to quickly understand what the model changed and why.

Cons

  • The main downside is that it is still a premium model, so I would not waste it on every trivial task. And like any coding agent, I still review diffs, run tests, and keep permissions tight.

Training

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

Training

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

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

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

Alternatives

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic
Qwen3.5

Qwen3.5

Alibaba

Categories

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

Categories

AI Coding Models Supported
AI Models Supported
Foundation Models Supported

Integrations

Bash Supported
Bind AI Supported
C# Supported
Cheaper Inference Supported
Clawd.run Supported
Elixir Supported
Hermes Agent Supported
Node.js Supported
Objective-C Supported
Perplexity Computer Supported
Revise Supported
Shiori Supported
Shipper.now Supported
Springhub Supported
StackAI Supported
Twigg Supported
Use AI Supported
Vercel AI Gateway Supported
Xcode Supported
YAML Supported

Integrations

Bash Not Supported
Bind AI Not Supported
C# Not Supported
Cheaper Inference Not Supported
Clawd.run Not Supported
Elixir Not Supported
Hermes Agent Not Supported
Node.js Not Supported
Objective-C Not Supported
Perplexity Computer Not Supported
Revise Not Supported
Shiori Not Supported
Shipper.now Not Supported
Springhub Not Supported
StackAI Not Supported
Twigg Not Supported
Use AI Not Supported
Vercel AI Gateway Not Supported
Xcode Not Supported
YAML Not Supported
Claim Claude Opus 5.5 and update features and information
Claim Claude Opus 5.5 and update features and information
Claim Hy4 and update features and information
Claim Hy4 and update features and information