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Get started freeClaude 4.1 Opus vs Claude 4 Sonnet
Compare Claude 4.1 Opus and Claude 4 Sonnet. Build AI products powered by either model on Appaca.
Create an AI-powered appModel Comparison
| Feature | Claude 4.1 Opus | Claude 4 Sonnet |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Model Type | text | text |
| Context Window | 1,000,000 tokens | 1,000,000 tokens |
| Input Cost | $15.00/ 1M tokens | $3.00/ 1M tokens |
| Output Cost | $75.00/ 1M tokens | $15.00/ 1M tokens |
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Create personal apps and internal tools powered by Claude 4.1 Opus, Claude 4 Sonnet, and 20+ other AI models. Just describe what you need — your app is ready in minutes.
Strengths & Best Use Cases
Claude 4.1 Opus
Anthropic1. Advanced Coding Performance
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Achieves 74.5% on SWE-bench Verified, improving the Claude family's state-of-the-art coding abilities.
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Stronger at:
- Multi-file code refactoring
- Large codebase debugging
- Pinpointing exact corrections without unnecessary edits
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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.
Claude 4 Sonnet
Anthropic- Hybrid reasoning: supports both fast (“near-instant”) and extended thinking modes.
- Optimised for responsiveness, cost and high-volume production workloads.
- Strong coding performance relative to prior Sonnet versions (improved over Sonnet 3.7).
- Available even in free tiers (alongside paid plans).
- Better suited for general-purpose use and agents where speed + cost-efficiency matter.
Prompts to Get Started
Use these prompts to power AI products you build on Appaca. Each works great with the models above.
Best for Claude 4.1 Opus
textCollaboration Outreach Request
Draft collaboration outreach messages for partnerships, co-marketing, podcasts, affiliates, and integrations-with clear value exchange and next steps.
Cold Email Generator
Generate personalized cold emails that get responses using proven frameworks and personalization techniques.
Develop Debt Payoff Strategy
Guide users to financial freedom with this AI prompt, combining financial analysis and psychological insight for personalized debt elimination strategies.
Best for Claude 4 Sonnet
textLinkedIn Post Generator
Create professional LinkedIn posts that establish thought leadership, drive engagement, and grow your network.
Governing Statutes & Regulations (Jurisdiction Scan)
Identify the governing statutes, regulations, agencies, and enforcement considerations for a legal issue in a specific jurisdiction.
Email Campaign (Buyer Journey Nurture)
Create an email nurture campaign that guides your persona through the buyer journey while highlighting your USP and solving key challenges.
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