Claude 4.1 Opus
A refined flagship model with improved coding, reasoning, research depth, and agentic task performance over Opus 4.
Claude 4.1 Opus at a glance
Context window
1M tokens
Input price
$15
per 1M tokens
Output price
$75
per 1M tokens
Why use Claude 4.1 Opus
Strengths, benchmarks, and where Claude 4.1 Opus fits in your team's workflow.
1. Advanced Coding Performance
Achieves 74.5% on SWE-bench Verified, improving the Claude family's state-of-the-art coding abilities.
Stronger at:
- Multi-file code refactoring
- Large codebase debugging
- Pinpointing exact corrections without unnecessary edits
Outperforms Opus 4 and shows gains comparable to jumps seen in past major releases.
2. Improved Agentic & Research Capabilities
- Better at maintaining detail accuracy in long research tasks.
- Enhanced agentic search and step-by-step problem solving.
- Performs reliably across complex multi-turn reasoning tasks.
3. Validated by Real-World Users
- GitHub: Better multi-file refactoring and code adjustments.
- Rakuten Group: High precision debugging with minimal collateral changes.
- Windsurf: One standard deviation improvement on their junior dev benchmark - similar magnitude to Sonnet 3.7 → Sonnet 4.
4. Hybrid-Reasoning Benchmark Improvements
- Improvements across TAU-bench, GPQA Diamond, MMMLU, MMMU, AIME (with extended thinking).
- Stronger robustness in long-context reasoning tasks.
Power your team with Claude 4.1 Opus
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by Claude 4.1 Opus - connected to your real data and ready for your whole team. No code, no deployment.
Build internal AI tools
Describe what you need and the Appaca agent builds it - lead scorers, report generators, email drafters - with Claude 4.1 Opus as the engine. No code, no deployment.
Give Claude 4.1 Opus your real data
Connect the tools your team already uses - Slack, Notion, Google Sheets, Airtable, and more - so Claude 4.1 Opus works with real context, not generic answers.
Automate recurring tasks
Schedule Claude 4.1 Opus to run on autopilot - daily digests, weekly summaries, or real-time triggers - all managed inside your Appaca workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by Claude 4.1 Opus - connected to the tools you already use.
Where teams use Claude 4.1 Opus
See how teams put Claude 4.1 Opus to work inside Appaca - internal tools and AI agents that work around you.
Sales
Score leads, draft follow-ups, and summarise deals with Claude 4.1 Opus doing the heavy lifting.
Explore Appaca for SalesMarketing
Draft, repurpose, and report on campaigns in your brand voice - powered by Claude 4.1 Opus.
Explore Appaca for MarketingOperations
Automate reporting, vendor tracking, and process docs with AI built around your workflow.
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Build internal AI tools with Claude 4.1 Opus
Describe the tool your team needs and get a working app powered by Claude 4.1 Opus - with a built-in database, team access, and integrations. No code, no deployment.