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Get started freeClaude 4 Sonnet vs Claude 3 Haiku
Compare Claude 4 Sonnet and Claude 3 Haiku. Build AI products powered by either model on Appaca.
Model Comparison
| Feature | Claude 4 Sonnet | Claude 3 Haiku |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Model Type | text | text |
| Context Window | 1,000,000 tokens | 200,000 tokens |
| Input Cost | $3.00/ 1M tokens | $0.25/ 1M tokens |
| Output Cost | $15.00/ 1M tokens | $1.25/ 1M tokens |
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Strengths & Best Use Cases
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.
Claude 3 Haiku
Anthropic1. Speed
- Fastest model in the Claude 3 family
- Near-instant responses for chat, support, and live tools
2. Efficiency
- Most affordable model
- Ideal for massive-scale applications and low-latency use cases
3. Practical Use Cases
- Customer support
- Translations
- Moderation
- Logistics, inventory systems
- Extracting insights from unstructured data
4. Vision Skills
- Handles charts, images, and diagrams quickly
- Useful for scanning large volumes of visual data
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 Sonnet
textBlog Post Outline Generator
Generate detailed outlines for blog posts to streamline your writing process and ensure comprehensive coverage.
Deployment Runbook
Write a step-by-step deployment runbook for releasing a service.
Visa Denial Appeal Letter
Write a visa denial appeal letter that addresses the specific grounds for refusal. Structured and evidence-focused.
Best for Claude 3 Haiku
textCompetitor Comparison Page
Write a fair but persuasive competitor comparison landing page. Positions your product advantages without disparaging competitors.
Home Valuation Lead Follow-Up
Follow up with a homeowner who requested an online home valuation. Converts a cold lead into a listing consultation.
Long-Haul Flight Survival Tips
Write a practical long-haul flight tips guide. Covers sleep, comfort, health, and entertainment for flights over 8 hours.