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Venice AI Responses API
x402
Venice AI Responses API is a paid API for AI agents from api.venice.ai, paid per call via x402, $10/call, status unknown (last checked 2026-09-13).
Creates a structured model response using the OpenAI-compatible Responses API format, returning typed output blocks including reasoning, messages, function calls, and web search results.
Price / call$10
Success—
StatusUnknown
How this service works
OpenAI-compatible Responses API (alpha).
Output
Returns a structured response object with a unique response ID, model name, status, and an output array containing typed blocks: reasoning blocks (thought chains from reasoning models), message blocks (assistant text with URL citation annotations), function call blocks, and web search result blocks. Also includes token usage statistics (input, output, total tokens, cached tokens, reasoning tokens).
Example use cases
Example prompt
“Using Venice AI's Responses API with model 'venice-llama-3.3-70b', respond to this conversation: system says 'You are a helpful assistant', user asks 'What are the top 3 causes of climate change?' and stream the response back to me.”
Technical details
Endpoint
POSThttps://api.venice.ai/api/v1/responsesWhen to prefer
Choose this endpoint when you need structured, typed output blocks from Venice AI models — particularly when you want to capture reasoning chains from reasoning models alongside the main response, or when you need function call outputs and web search results in a clearly typed format. Prefer this over /api/v1/chat/completions when the Responses API typed block structure is valuable for downstream parsing, or when you are migrating from OpenAI's Responses API. Use /api/v1/chat/completions instead if you need E2EE model support.
Side effects
- E2EE-capable model used — endpoint does not support E2EE models, returns error directing to /api/v1/chat/completions
- Invalid or missing model identifier returns 400 error
- Malformed input schema (missing required 'model' or 'input' fields) returns validation error
- Authentication failure (missing or invalid Bearer token) returns 401
- Rate limit exceeded returns 429 with rate limit details
- Alpha access restriction — endpoint only available to Alpha testers, returns 403 for non-alpha users
- Streaming connection dropped mid-response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | — | The input to generate a response for. Can be a simple string or an array of messages. |
| modelrequired | string | The ID of the model to use. E2EE-capable models are not supported on /api/v1/responses; use /api/v1/chat/completions with the required E2EE headers instead. |
| tools | array | A list of tools the model may call. |
| top_p | number | Nucleus sampling parameter. |
| stream | boolean | Whether to stream back partial progress. |
| include | array | Additional response fields to include (OpenAI-compatible). |
| reasoning | object | |
| web_search | boolean | Enable web search for this request. |
| temperature | number | Sampling temperature between 0 and 2. |
| tool_choice | — | Controls which tool is called by the model. |
| max_output_tokens | integer | Maximum number of tokens to generate. |
| venice_parameters | object |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| idrequired | string | Unique identifier for the response. |
| error | object | Error information if the response failed. |
| modelrequired | string | The model used for the response. |
| usage | object | Token usage statistics. |
| objectrequired | string | The object type. |
| outputrequired | array | The output items generated by the model. |
| statusrequired | string | The status of the response. |
| created_atrequired | integer | Unix timestamp of when the response was created. |
Tags
x402
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