Quick answer

Claude Opus 4.7 is Anthropic's most powerful AI model to date, released in April 2026. It sets new records on reasoning, coding, and document analysis benchmarks — scoring higher than GPT-5 on several professional-grade tests. It is available via Claude Pro ($20/month) and the Anthropic API. For demanding tasks — research, complex coding, legal analysis — it is currently the most capable AI you can access.

Every few months, one of the major AI labs releases a model that genuinely moves the needle. Claude Opus 4.7 is one of those releases. When Anthropic published the benchmarks, the AI community took notice. This is not a minor update — it is a meaningful leap, and if you use AI for serious work, you need to understand what changed.

What is Claude Opus 4.7?

Claude Opus 4.7 is the most powerful model in Anthropic's Claude 4 family. Anthropic follows a naming convention with three tiers — Haiku (fast and cheap), Sonnet (balanced), and Opus (most capable). The 4.7 is the seventh significant update within the Claude 4 generation, and it is the first Claude model to consistently outperform GPT-5 on multi-step reasoning tasks.

Anthropic describes it as their first model to demonstrate "extended thinking" capabilities — meaning it can work through complex problems step by step, show its reasoning, catch its own errors mid-answer, and revise. This is a qualitative shift from previous Claude models.

What is new in Opus 4.7 compared to earlier versions?

  • Extended thinking mode — the model can reason out loud over long chains of logic before giving a final answer, dramatically reducing errors on hard problems
  • Larger context window — 500,000 tokens (up from 200,000 in Claude 3.5). That is roughly 375,000 words — multiple books at once
  • Stronger coding — scores 87.4% on SWE-Bench Verified, the industry benchmark for real-world software engineering tasks. GPT-5 scores 79.1%
  • Better instruction following — Opus 4.7 is more precise about sticking exactly to what you asked, without adding unsolicited caveats or changing scope
  • Improved tool use — more reliable when using web search, code execution, and file reading in agentic workflows
  • Faster than Opus 4.6 — Anthropic reduced latency by around 30% without sacrificing capability

Benchmark highlight: On GPQA Diamond — questions designed to stump PhD-level experts — Claude Opus 4.7 scores 93.1%. GPT-5 scores 90.4%. Gemini Ultra 2.0 scores 88.7%. This is the first time a Claude model has topped all three major benchmarks simultaneously.

How does it compare to GPT-5?

The short answer: they are extremely close, and the better model depends entirely on the task.

  • Coding: Claude Opus 4.7 leads — SWE-Bench 87.4% vs GPT-5's 79.1%
  • Reasoning: Claude Opus 4.7 leads slightly on GPQA Diamond
  • Writing quality: Claude Opus 4.7 is preferred in blind tests for long-form writing and prose
  • Speed: GPT-5 (via ChatGPT) is faster for casual use; Opus 4.7 is faster than previous Opus models but still slightly slower than GPT-5
  • Image and multimodal: Broadly equal — both process images, documents, and data natively
  • Ecosystem: GPT-5 still has more third-party integrations and plugins

Who should use Claude Opus 4.7?

  • Software developers — if you are writing complex code, debugging large codebases, or building AI-powered products, Opus 4.7's coding ability is the best available
  • Researchers and analysts — the extended context window and extended thinking mode make it unmatched for digesting and synthesising large bodies of text
  • Lawyers and consultants — contract review, legal research, and document comparison across hundreds of pages
  • Writers and editors — long-form content, editorial feedback, ghostwriting. Anthropic's models have always had a better natural writing voice
  • Power API users — developers building agents and workflows will find Opus 4.7's improved tool use and instruction following significantly reduces failure rates

How do you access Claude Opus 4.7?

There are two ways to use Opus 4.7:

  • Claude Pro ($20/month) — access via claude.ai. You get Opus 4.7 with higher usage limits, Claude Projects, and extended thinking mode. This is the easiest option for most people.
  • Anthropic API — for developers building applications. Priced per token. Opus 4.7 is more expensive than Sonnet but significantly cheaper than it was 12 months ago as Anthropic has improved efficiency.

The free tier of claude.ai gives you Claude Sonnet 4.6 — which is excellent for everyday tasks. Opus 4.7 requires a paid subscription.

What is "extended thinking" and does it matter?

Extended thinking is the most significant new capability in Opus 4.7. When you enable it, the model does not just answer — it works through the problem step by step in a visible reasoning trace before committing to a final response.

In practice, this means: harder problems get better answers. On complex coding bugs, multi-step maths, ambiguous instructions, or questions with no clear right answer — Opus 4.7 with extended thinking enabled will significantly outperform the same model without it. The trade-off is speed: it takes longer to answer. For quick tasks, you probably do not need it.

Practical tip: Enable extended thinking for complex tasks — debugging, research synthesis, legal analysis. Disable it for quick summaries or simple Q&A. The difference in answer quality for hard problems is substantial.

Is it worth upgrading to Claude Pro for Opus 4.7?

If AI is part of your work, yes. The $20/month price point for access to the world's most capable model on reasoning and coding tasks is, by any professional standard, extremely cheap. A single hour saved on a complex piece of analysis pays for a month.

If you use AI occasionally for personal tasks — summarising articles, drafting emails, generating ideas — Claude Sonnet 4.6 on the free tier is genuinely excellent and will serve you well. Opus 4.7 is where the gap becomes clear on the hardest tasks.

Related reading

ChatGPT vs Claude vs Gemini — Which AI Is Actually Better? What Is GPT-5 and What Can It Actually Do? OpenAI vs Anthropic — What Is the Difference? What Is AI Alignment — and Why Does It Keep Everyone Up at Night?

Bottom line

Claude Opus 4.7 is the most capable AI model currently available for coding and multi-step reasoning. If those are the tasks you care about, it is worth using. For everything else, the differences between the top models are small enough that personal preference — tone, speed, interface — matters more than benchmarks. But for serious, demanding professional work, Opus 4.7 is where the bar now sits.