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Verified, legitimate, and completely free AI APIs. No credit card required, no hidden fees, no trials.
We only list APIs that meet ALL these criteria:
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1. Sign up on the provider's website
2. Look for "API" or "Developers" section
3. Generate new API key
4. Copy and store securely (use environment variables)
5. Never commit API keys to public repositories
• Use environment variables
• Implement rate limiting
• Add request timeouts
• Use HTTPS only
• Monitor usage regularly
• Rotate keys periodically
• Track your API calls
• Implement exponential backoff
• Cache responses when possible
• Queue requests during high usage
• Use webhooks for long-running tasks
• Monitor provider status pages
• Create separate config file for API keys
• Use consistent error handling
• Implement logging
• Create wrapper classes/functions
• Write unit tests for API calls
• Document your implementation
These APIs don't require credit cards, have no trial expirations, and offer permanent free tiers with actual usage limits (not just demos).
While providers can change policies, these have established free tiers. We monitor changes and update this list regularly.
Most APIs will return rate limit errors. You'll need to wait or upgrade to paid plans for more capacity.
Yes, but check each provider's terms. Most allow commercial use within free tier limits.