# DeepSeek
> DeepSeek AI inference without an API key or credit card. Pay per request in USDC or EURC on any of 4 chains. OpenAI-compatible chat completions endpoint.

## Pricing
- $0.0075 (Base USDC/EURC)/request, $0.0075 (Arbitrum USDC)/request, $0.00625 (Polygon USDC)/request, $0.00125 (Avalanche USDC)/request

## Endpoints

### POST /v1/chat/completions
Send a chat completion request. Supports deepseek-v4-flash and deepseek-v4-pro models. OpenAI-compatible format.

**Parameters (JSON body):**
- model (string, required): `deepseek-v4-flash` or `deepseek-v4-pro`
- messages (array, required): Array of `{role, content}` objects

### GET /v1/models
List available models.

### GET /about
Service metadata and accepted payment options.