ChatGPT vs Claude API
These two do quite different things, so neither is a direct alternative to the other.
ChatGPT OpenAI
OpenAI’s assistant for writing, analysis, coding, image generation, voice conversations and web search.
VisitClaude API Anthropic
Claude models for developers, with tool use, prompt caching, batches and skills; also on AWS, Google Cloud and Azure.
VisitSide by side
| Property | ChatGPT | Claude API |
|---|---|---|
| Type | Product | Product |
| Category | AI assistants | AI models and APIs |
| Made by | OpenAI | Anthropic |
| Pricing | Free plan + paid | Pay per use |
| Open source | No | No |
| API | Yes | Yes |
| Platforms | Web, Desktop, Mobile | API |
| Startup | Yes | Yes |
Features
Only ChatGPT
- chat
- writing
- web search
- image generation
- voice
- file analysis
Both
- agents
Only Claude API
- llm api
- reasoning
- coding
- skills
- mcp