Get started

Use gateway & prompts

Call 250+ LLMs through the Respan gateway, and manage reusable prompts.

1. Create an account

Sign up at platform.respan.ai and generate an API key on the API keys page.

2. Add credits or a provider key

Add credits on the Credits page or connect your own provider key on the Integrations page.

3. Make your first call

Call any model through the Respan gateway. Just point to https://api.respan.ai/api/ and use your Respan API key.

$curl -X POST "https://api.respan.ai/api/chat/completions" \
>  -H "Content-Type: application/json" \
>  -H "Authorization: Bearer YOUR_RESPAN_API_KEY" \
>  -d '{
>    "model": "gpt-5.4",
>    "messages": [{"role": "user", "content": "Hello!"}]
>  }'

Works with any LLM SDK and framework:

Browse available models on the Models page. For advanced gateway features (fallbacks, load balancing, caching), see Gateway advanced.