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Get started freeGPT-5.1 vs Claude 3 Sonnet
Compare GPT-5.1 and Claude 3 Sonnet. Build AI products powered by either model on Appaca.
Model Comparison
| Feature | GPT-5.1 | Claude 3 Sonnet |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Model Type | text | text |
| Context Window | 400,000 tokens | 200,000 tokens |
| Input Cost | $1.25/ 1M tokens | $3.00/ 1M tokens |
| Output Cost | $10.00/ 1M tokens | $15.00/ 1M tokens |
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Strengths & Best Use Cases
GPT-5.1
OpenAI1. Configurable Reasoning for Agentic Tasks
- Built to excel in autonomous or semi-autonomous coding workflows, with adjustable reasoning effort for planning, refactoring and debugging.
2. Fast Multi-Modal Input with Large Output
- Accepts both text and image inputs while producing text outputs.
- Offers up to 128 k output tokens, allowing long responses and code generation across multiple files.
3. Large Context & Knowledge Cut-Off
- 400 k token context window supports processing large codebases or documents.
- Knowledge cut-off of Sep 30 2024 ensures familiarity with recent tools and frameworks.
4. Reasoning Token Support
- Provides explicit support for reasoning tokens, enabling developers to fine-tune the balance between reasoning depth and speed.
Claude 3 Sonnet
Anthropic1. Speed + Intelligence Blend
- 2x faster than Claude 2/2.1
- Strong reasoning with lower cost
2. Enterprise-Ready
- Designed for high-volume, large-scale deployments
- Excellent stability for production workloads
3. Versatile Task Performance
- Great for RAG, search, document understanding
- High-quality code generation
- Effective at sales automation and knowledge retrieval
4. Vision Capabilities
- Reads charts, graphs, images reliably
- Extracts text from visuals efficiently
Prompts to Get Started
Use these prompts to power AI products you build on Appaca. Each works great with the models above.
Best for GPT-5.1
textSEO FAQ Section
Write an FAQ section optimised for featured snippets and long-tail keywords.
Marketing Skills Matrix (Hiring + Training Plan)
Create a marketing skills matrix that identifies the competencies needed to communicate your USP and solve evolving persona challenges.
YouTube Video Description
Write an SEO-optimised YouTube video description with timestamps and links.
Best for Claude 3 Sonnet
textDevelop a Legal Strategy (Risks, Benefits, Alternatives)
Evaluate a proposed legal strategy with risks, benefits, alternatives, and a decision framework.
50th Birthday Speech
Write a milestone birthday speech celebrating a 50th birthday. Balances humor, nostalgia, and genuine celebration.
Title Insurance Explanation Email
Explain title insurance to a buyer client in plain language. Demystifies a confusing closing cost.