Free AI API Guides
Use these free AI API guides when you want cloud models without installing large files locally. These free API setup guides cover account setup, API keys, model selection, and safe configuration.
2 guides
What you can learn
- Create and protect API keys
- Connect coding tools to free model endpoints
- Test requests before adding an API to a larger project
Cloud APIs are often the fastest way to test a model, especially on a computer without a capable GPU. A good setup keeps the key on the server or in an environment variable, handles rate limits, and chooses a fallback model when a free tier is unavailable. Use these guides to validate a small request first, then add retries, logging, and usage limits before connecting the API to a public feature.
Use Hugging Face Free Inference API
Access thousands of open-source AI models through Hugging Face's free serverless Inference API.
Setup OpenRouter — Free Access to 50+ AI Models
OpenRouter gives you a single free API key to access Claude, Llama, Mistral, DeepSeek, and 50+ other models.
Free APIs questions
How do I keep a free AI API key safe?
Store it in an environment variable or server-side secret manager. Do not put it in browser JavaScript, screenshots, commits, or a public repository.
What happens when a free API reaches its limit?
The provider may return a rate-limit or quota error. Handle that response clearly, slow down repeated requests, and use an approved fallback model only when it matches the user's expectations.
Need a recommendation first? Use the free AI setup wizard or compare every AI model.