Claude Opus 5.5

Claude Opus 5.5

Anthropic
Grok 2

Grok 2

SpaceXAI
+
+

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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

Grok-2, the latest iteration in AI technology, is a marvel of modern engineering, designed to push the boundaries of what artificial intelligence can achieve. Inspired by the wit and wisdom of the Hitchhiker's Guide to the Galaxy and the efficiency of JARVIS from Iron Man, Grok-2 is not just another AI; it's a companion in the truest sense. With an expanded knowledge base that stretches up to the recent past, Grok-2 offers insights with a touch of humor and an outside perspective on humanity, making it uniquely engaging. Its capabilities include answering nearly any question with maximum helpfulness, often providing solutions that are both innovative and outside the conventional box. Grok-2's design emphasizes truthfulness, avoiding the pitfalls of woke culture, and strives to be maximally truthful, making it a reliable source of information and entertainment in an increasingly complex world.

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 Supported
iPad Supported
Android 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

Anyone interested in a powerful large language model from xAI

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

Free
Free Version 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

SpaceXAI
Founded: 2023
United States
x.ai

Alternatives

Alternatives

Grok 3

Grok 3

SpaceXAI
OpenAI o1

OpenAI o1

OpenAI
Grok 3 mini

Grok 3 mini

SpaceXAI
Claude Fable 5

Claude Fable 5

Anthropic
Grok 4.7

Grok 4.7

SpaceXAI

Categories

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

Categories

Integrations

Thread Deck Supported
Augment Code Supported
Biela.dev Supported
Bind AI Supported
C# Supported
Claude Agent SDK Supported
Devin Supported
Emergent Supported
Factory Droid Supported
GitAuto Supported
GitHub Copilot CLI Supported
Google Antigravity Supported
Grok Imagine Not Supported
LaunchLemonade Supported
OpenTag Supported
Rider Supported
Simtheory Supported
Twigg Supported
Vellum Supported
Zo Computer Supported

Integrations

Thread Deck Supported
Augment Code Not Supported
Biela.dev Not Supported
Bind AI Not Supported
C# Not Supported
Claude Agent SDK Not Supported
Devin Not Supported
Emergent Not Supported
Factory Droid Not Supported
GitAuto Not Supported
GitHub Copilot CLI Not Supported
Google Antigravity Not Supported
Grok Imagine Supported
LaunchLemonade Not Supported
OpenTag Not Supported
Rider Not Supported
Simtheory Not Supported
Twigg Not Supported
Vellum Not Supported
Zo Computer Not Supported
Claim Claude Opus 5.5 and update features and information
Claim Claude Opus 5.5 and update features and information
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Claim Grok 2 and update features and information