# DuckDuckGo AI Chat Answer API

> Get the answer DuckDuckGo's Duck.ai chat gives for a question with a chosen chat model, with answer text and a token for follow-up questions.

Source: https://www.sandbase.ai/apis/duckduckgo/ai-chat
API reference: https://www.sandbase.ai/apis/duckduckgo/ai-chat#api

## Facts

- Provider: DuckDuckGo
- Type: Data API
- Endpoint: `POST https://api.sandbase.ai/v1/api/duckduckgo/ai-chat`
- Price: $0.01 per call
- Capabilities: api, duckduckgo, ai search
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

`POST https://api.sandbase.ai/v1/api/duckduckgo/ai-chat` with `Authorization: Bearer $SANDBASE_API_KEY` and the parameters as a JSON body.

| Parameter | Type | Required | Allowed values |
| --- | --- | --- | --- |
| `q` | string | yes |  |
| `model` | string | no |  |
| `subsequent_request_token` | string | no |  |
| `json_restrictor` | string | no |  |

## FAQ

### How do I use the DuckDuckGo AI Chat Answer API?

Send a POST request to https://api.sandbase.ai/v1/api/duckduckgo/ai-chat with your SandBase API key in the Authorization header (Bearer) and the parameters as a JSON body. You can also try it in the Playground on this page without writing code.

### How much does the DuckDuckGo AI Chat Answer API cost?

$0.01 per call, billed from your SandBase balance. You are only charged for calls you make; there is no subscription.

### What parameters does the DuckDuckGo AI Chat Answer API accept?

Required: q (string). Optional: model (string), subsequent_request_token (string) and json_restrictor (string). The Parameters table and the Playground on this page list every field.

### What does the DuckDuckGo AI Chat Answer API return?

A JSON response returned in the same HTTP request (synchronous).

### Do I need a DuckDuckGo developer account or API key?

No. DuckDuckGo AI Chat Answer runs through SandBase, so one SandBase API key covers this endpoint and every other API and model in the catalog. You do not need to apply for DuckDuckGo API access separately.

## README

### DuckDuckGo AI Chat Answer

Get the answer DuckDuckGo's Duck.ai chat gives for a question with a chosen chat model, with answer text and a token for follow-up questions.

#### Request

```bash
curl -X POST "https://api.sandbase.ai/v1/api/duckduckgo/ai-chat" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"q": "How does a heat pump work?"}'
```

The result is returned in `outputs[0].data` as structured JSON.

#### Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `q` | string | Yes | Parameter defines the prompt you want to send to Duck AI, DuckDuckGo's AI chat. |
| `model` | string | No | Parameter defines the AI model that answers the prompt. It can be set to: `gpt-5.6-luna` - GPT-5.6 Luna `gpt-6-luna` - GPT-6 Luna `gpt-5.4-mini` - GPT-5.4 mini `claude-haiku-4-5` - Claude Haiku 4.5 `mistral-small-2603` - Mistral Small 4 `ti |
| `subsequent_request_token` | string | No | Parameter defines the token used to continue a Duck AI conversation. Pass this token with a new `q` to send a follow-up prompt that includes the previous prompts and answers as context (multi-turn). The token is returned by the API from you |
| `json_restrictor` | string | No | Parameter defines the fields you want to include in the output, reducing payload size for faster response. See the JSON Restrictor documentation for more details. |

#### Pricing

$0.010 per successful call. Failed calls are not charged.