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Deeper, harder reasoning
Multi-step logic chains, edge-case handling, and rigorous analysis where lighter models lose the thread. Designed to think before it speaks.
Try a hard prompt →Anthropic's most advanced model - built for the problems Sonnet can't crack alone. Deeper reasoning, harder code, longer context, sharper writing. Try it in your browser in 30 seconds.
Opus 4.7 is built for the work that requires real thinking. It doesn't just answer faster — it reasons further, holds more context in mind, and produces output you'd actually ship.
Multi-step logic chains, edge-case handling, and rigorous analysis where lighter models lose the thread. Designed to think before it speaks.
Try a hard prompt →Refactor an entire module, debug across files, design system architecture, or build something from scratch. Opus 4.7 is the model engineers reach for first.
See a code example →200K tokens of context — roughly 500 pages. Drop in a full codebase, a research corpus, or a contract. Opus reads everything and reasons across it.
See use cases →Editorial-grade prose, screenplays, technical writing, and long-form arguments — adapted to your style, not flattened into AI-speak.
Open in Claude →Plan, decide, and act across long horizons with tools, MCP servers, and Claude Code. The model that holds the plan together when other models drift.
Run an agent →Opus 4.7 admits uncertainty instead of hallucinating confidently. You get calibrated answers — and reasoning you can audit and trust.
Test it yourself →Whether you use Claude in the browser or call it from your code, getting Opus 4.7 takes about as long as making a cup of coffee.
Pick Opus 4.7 from the model dropdown in Claude.ai, or pass claude-opus-4-7 in any API call. No SDK update, no migration, no friction.
import anthropic client = anthropic.Anthropic() response = client.messages.create( model="claude-opus-4-7", max_tokens=2048, messages=[{ "role": "user", "content": "Refactor this module for readability and add tests." }] ) print(response.content[0].text) # → returns a complete, reviewed, # production-ready refactor.
Take five minutes today to point one task you're stuck on at Opus 4.7. We think you'll switch.
A side-by-side look at the current Claude lineup. Sonnet is great. Haiku is fast. Opus 4.7 is for when "great" isn't good enough.
| Haiku 4.5 | Sonnet 4.6 | Opus 4.7 | Opus 4.6 | |
|---|---|---|---|---|
| Best for | Speed & volume | Most everyday tasks | Hardest problems | Complex tasks |
| Reasoning depth | ★★★ | ★★★★ | ★★★★★ | ★★★★★ |
| Coding ability | ★★★ | ★★★★ | ★★★★★ | ★★★★★ |
| Context window | 200K | 200K | 200K | 200K |
| Speed | Ultra fast | Fast | Thoughtful | Thoughtful |
| Long-horizon agents | — | ✓ | ✓ Best | ✓ |
| Available on free tier | Limited | ✓ | Pro & up | Pro & up |
| API string | claude-haiku-4-5 | claude-sonnet-4-6 | claude-opus-4-7 | claude-opus-4-6 |
The tasks our community brings to Opus 4.7 most often — pick one that sounds like yours and try it free.
Refactor across an entire codebase, design system architecture, debug nightmare race conditions, or scaffold a new service from a spec.
Synthesize a corpus of papers, run literature reviews, evaluate evidence, and produce nuanced reports with citations and counterarguments.
Stress-test a plan, surface blind spots, build a board memo, or work through a tough call with a thinking partner who pushes back.
Books, essays, screenplays, deep technical docs, brand voice — Opus 4.7 holds tone and structure across tens of thousands of words.
Long-horizon agentic work — research, ops automation, multi-tool workflows. Opus 4.7 is the model that doesn't lose the plan.
Contract review, policy analysis, due diligence, technical specifications. Careful, citation-grounded, willing to flag uncertainty.
Opus 4.7 is included on every paid plan. Most users start on Pro and never feel the need to leave.
The questions we hear most often from people about to switch.
Sonnet 4.6 is the recommended default for most tasks — fast, smart, and capable. Opus 4.7 is meaningfully stronger on the hardest work: deep reasoning chains, complex multi-file refactors, long-horizon agentic planning, and nuanced long-form writing. If Sonnet feels like it's "almost there" on a task, Opus is the upgrade. See the full comparison →
Opus 4.7 is included on the Pro plan ($20/mo) and above. You can start free with Sonnet 4.6 and upgrade to Pro when you want Opus. New API accounts include $5 in free credits, which you can spend on Opus 4.7 calls right away.
It's optimized for thoughtfulness, not speed — Opus takes a beat longer than Sonnet because it's reasoning more deeply. For chat, the difference is barely noticeable. For agentic workloads where quality matters more than latency, Opus is almost always the right call.
claude-opus-4-7. It's a drop-in replacement — pass that string anywhere you'd previously call claude-opus-4-6 or claude-sonnet-4-6. No SDK upgrade required.
Yes. Run claude --model claude-opus-4-7 or set it as your default in the Claude Code config. It's the model you want for hard, multi-file engineering work.
200,000 tokens — roughly 500 pages of text. You can drop entire codebases, books, contracts, or research corpora into a single prompt and Opus will reason across all of it.
Yes — full support for tool use, the vision API, the batch API, streaming, and MCP integrations. Anything you've built on Claude already works with Opus 4.7 without changes.
Open the model dropdown at the top of any chat (it usually shows "Sonnet 4.6") and pick Opus 4.7. That's it — it takes effect immediately for the rest of the conversation.
Anthropic publishes its data handling policies in detail. By default, Pro and Max conversations are not used for model training. Enterprise/Team plans support zero data retention. Full details at anthropic.com/privacy.
Yes — Pro and Max are month-to-month, cancel anytime, no questions asked. The free tier is permanent.
Open Claude in your browser, pick Opus 4.7 from the dropdown, and ask it the hardest thing on your plate today.
No credit card · Free tier forever · Available in 100+ languages