Responses API

# High-quality web research, in seconds

Build fast and accurate web research experiences into your product.

[View docs](https://docs.parallel.ai/responses-api/responses-quickstart)

Features

## Fast, predictable, drop-in

### High quality, low latency

Responses returns simple questions in just a couple seconds and can do deep research inside a minute. Perfect for conversational agents and user-facing UIs.

[Get Started](https://platform.parallel.ai/)

### Flat, predictable cost

Each Responses API call costs the same, no matter how many tokens Parallel consumes under the hood. Scale usage confidently from 1 call to 1 million calls.

[Get Started](https://platform.parallel.ai/)

### OpenAI compatible

Use Parallel's Responses API through OpenAI's Python or TypeScript SDKs. Switching to Parallel is a three-line diff.

[Get Started](https://platform.parallel.ai/)

Use Cases

## In your product, or inside your agent

## In-product web research

Build delightfully smart product experiences, powered by fast web research.

[Get Started](https://platform.parallel.ai/)

## A subagent specialized for research

Let your agent delegate web research tasks to Parallel Responses, making your agent faster, smarter, and much more token-efficient.

[Get Started](https://platform.parallel.ai/)

## Start building for free

Get started with our APIs in seconds. Run up to 5,000 requests per month for free.

[API Playground](https://platform.parallel.ai/) [Docs](https://docs.parallel.ai/getting-started/overview#onboard-your-agent)

Agent onboarding prompt:

Use curl to read parallel.ai/agents.md and perform the setup to install Parallel