AK
Claude API vs OpenAI API for production apps - honest comparison
After using both Claude and OpenAI APIs in production for 6 months, here is my honest comparison:
Claude (Anthropic):
- Better at following complex system prompts and instructions
- More consistent structured output format
- Extended thinking feature is excellent for reasoning tasks
- Tool use and function calling works reliably
- 200K token context window
OpenAI (GPT-4):
- Larger ecosystem and more community resources
- Better at creative writing tasks in my experience
- More fine-tuning options available
- Slightly faster response times on average
My verdict: I now default to Claude for most backend and API integration tasks where I need structured output. I use OpenAI for creative content generation. Both are excellent.
What is your experience? Would love to hear from others who have used both in production.