Parallel

Parallel Responses API

An OpenAI-Responses-compatible interface for answers grounded in live web research, with URL citations. Point any Responses-API client — the OpenAI Python SDK, OpenAI TypeScript SDK, the Agents SDK, or raw HTTP — at `https://api.parallel.ai` with your Parallel API key, set `model` to `parallel`, and call `/v1/responses`. - `input` accepts a plain string or an array of role/content messages (canonical OpenAI shape; text content only). - `reasoning.effort` (`low`/`medium`/`high`) controls how much research is performed, trading response time for answer quality. - Multi-turn via `previous_response_id`. - Structured outputs via `text.format = {"type": "json_schema", "name": ..., "schema": {...}}`. - Streaming (`stream=true`) emits the standard OpenAI Responses SSE lifecycle: `response.created` and `response.in_progress`, then output item / content part / text delta events with URL-citation annotations, the matching `*.done` events, and a terminal `response.completed` — or `response.failed` if the request fails mid-stream.

GitHub OpenAPI

Operations 1

POST /v1/responses Create Response #

Documentation

📖
Documentation
https://docs.parallel.ai/responses-api/responses-quickstart
📖
APIReference
https://docs.parallel.ai/api-reference
📖
GettingStarted
https://docs.parallel.ai/getting-started/overview
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/parallel/refs/heads/main/authentication/parallel-authentication.yml

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/parallel/refs/heads/main/openapi/parallel-responses-api-api-openapi.yml

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OpenAPI Specification

parallel-responses-api-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Parallel Responses API
  description: Parallel API
  contact:
    name: Parallel Support
    url: https://parallel.ai
    email: support@parallel.ai
  version: 0.1.2
servers:
- url: https://api.parallel.ai
  description: Parallel API
security:
- ApiKeyAuth: []
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/parallel/refs/heads/main/openapi/parallel-responses-api-api-openapi.yml