Claude vs OpenAI API
These two do quite different things, so neither is a direct alternative to the other.
Claude Anthropic
Anthropic’s assistant for writing, analysis and coding, with projects, artifacts, skills and connectors to your tools.
VisitOpenAI API OpenAI
GPT models for text, vision, images, audio and realtime voice, plus the Agents SDK.
VisitSide by side
| Property | Claude | OpenAI API |
|---|---|---|
| Type | Product | Product |
| Category | AI assistants | AI models and APIs |
| Made by | Anthropic | OpenAI |
| Pricing | Free plan + paid | Pay per use |
| Open source | No | No |
| API | Yes | Yes |
| Platforms | Web, Desktop, Mobile | API |
| Startup | Yes | Yes |
Features
Only Claude
- chat
- writing
- web search
- file analysis
- coding
- skills
- mcp
Both
- agents
Only OpenAI API
- llm api
- reasoning
- image generation
- voice
- embeddings