Claude starts at $20/mo; OpenAI API is free. OpenAI API is rated higher at 4.8/5 vs Claude's 4.5/5.

AI assistant by Anthropic — known for long context windows, nuanced reasoning, and safety.

Developer API platform providing access to GPT-4o, DALL-E 3, Whisper, embeddings, and fine-tuning capabilities.


Independent analysis based on features, pricing, and user ratings
Claude uniquely offers Long context (200K tokens), Document analysis, Code generation. OpenAI API uniquely offers GPT-4o access, DALL-E 3, Whisper speech-to-text. Both share 0 features.
Claude starts at $20/mo; OpenAI API is free.

Free tier available

Paid plans only