Anthropic
Claude 4.5, Claude 4, Claude 3.5 Sonnet, and Haiku
✓ What's Allowed
- ✓Building applications using your own API key
- ✓Commercial products and SaaS platforms
- ✓Research, education, and internal tools
- ✓Content generation with responsible use
- ✓Integrating Claude into your product workflow
✗ What's Prohibited
- ✗Accepting or proxying end-user API keys
- ✗Reselling or sublicensing API access
- ✗Generating harmful, deceptive, or illegal content
- ✗Using outputs to train competing AI models
- ✗Attempting to extract model weights or architecture details
- ✗Circumventing safety features or usage limits
- ✗Automated decision-making in high-stakes domains without human oversight
Key ToS Sections
Last updated: 2025-10-16 —Check your compliance →