Claude Opus 5.5

Claude Opus 5.5

Anthropic
Grok 3

Grok 3

SpaceXSI
+
+

Related Products

  • Gemini Enterprise Agent Platform
    1,161 Ratings
    Visit Website
  • Jotform
    9,009 Ratings
    Visit Website
  • Retool
    598 Ratings
    Visit Website
  • JAMS Scheduler
    285 Ratings
    Visit Website
  • LTX
    182 Ratings
    Visit Website
  • Checksum.ai
    2 Ratings
    Visit Website
  • Concord
    237 Ratings
    Visit Website
  • Evertune
    1 Rating
    Visit Website
  • Google AI Studio
    41 Ratings
    Visit Website
  • Fathom
    7,880 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

Grok-3, developed by xAI, represents a significant advancement in the field of artificial intelligence, aiming to set new benchmarks in AI capabilities. It is designed to be a multimodal AI, capable of processing and understanding data from various sources including text, images, and audio, which allows for a more integrated and comprehensive interaction with users. Grok-3 is built on an unprecedented scale, with training involving ten times more computational resources than its predecessor, leveraging 100,000 Nvidia H100 GPUs on the Colossus supercomputer. This extensive computational power is expected to enhance Grok-3's performance in areas like reasoning, coding, and real-time analysis of current events through direct access to X posts. The model is anticipated to outperform not only its earlier versions but also compete with other leading AI models in the generative AI landscape.

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

Tech-savvy individuals, researchers, developers, and anyone seeking an AI companion for advanced, multimodal interactions and real-time, insightful analysis

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 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

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.

Pros & Cons from Real Users

Pros

  • The standout feature of Grok-3 is its unparalleled advanced reasoning. When I threw intricate math problems, philosophical dilemmas, and multi-step analytical tasks its way, it broke them down effortlessly, providing step-by-step logic that was easy to follow yet deeply insightful. I was amazed at how it anticipated follow-up questions, offering additional context that enriched my understanding. Its ability to connect ideas across domains and handle abstract concepts with precision is simply unmatched. On top of that, it’s fast, multilingual, and adapts perfectly to any topic I explored.

Cons

  • If I had to mention a downside, I’d say that occasionally, Grok-3’s responses assumed a higher level of background knowledge than I had, but a quick clarification prompt solved this instantly. It’s a tiny hiccup in an otherwise flawless experience.

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

SpaceXSI
Founded: 2023
United States
x.ai/

Alternatives

Alternatives

Claude Code

Claude Code

Anthropic
GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
Grok 4.20

Grok 4.20

SpaceXSI
Grok 4 Heavy

Grok 4 Heavy

SpaceXSI

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
Multimodal Models Supported

Integrations

BLACKBOX AI Supported
Brokk Supported
C Supported
C# Supported
C++ Supported
Elixir Supported
F# Supported
Go Supported
HTML Supported
Java Supported
Julia Supported
Kotlin Supported
PHP Supported
Python Supported
R Supported
Ruby Supported
Scala Supported
Shiori Supported
Visual Basic Supported
Yonoo Supported

Integrations

BLACKBOX AI Supported
Brokk Supported
C Supported
C# Supported
C++ Supported
Elixir Supported
F# Supported
Go Supported
HTML Supported
Java Supported
Julia Supported
Kotlin Supported
PHP Supported
Python Supported
R Supported
Ruby Supported
Scala Supported
Shiori Supported
Visual Basic Supported
Yonoo Supported
Claim Claude Opus 5.5 and update features and information
Claim Claude Opus 5.5 and update features and information
Claim Grok 3 and update features and information
Claim Grok 3 and update features and information