What is a PRD (Product Requirements Document)?

A Product Requirements Document (PRD) is a document that describes the purpose, features, functionality, and behavior of a product to be built. It serves as the primary reference for engineering, design, and QA teams during development. A well-written PRD includes: product overview, user personas, feature requirements, acceptance criteria, success metrics, and out-of-scope items. Clearly's AI PRD generator creates all of these sections automatically from your product idea.

What is a BRD (Business Requirements Document)?

A Business Requirements Document (BRD) describes the business need a project or product must address — before any solution is designed. It covers: business objectives, stakeholders, current state, desired future state, constraints, and success criteria. While a PRD focuses on what the product will do, a BRD focuses on why the product is being built and what business outcome it must achieve. Clearly generates both BRDs and PRDs through AI-guided conversations.

How long does it take to write a PRD with AI?

Using Clearly's AI PRD generator, you can produce a complete first draft of a Product Requirements Document in 5–15 minutes. The AI asks you targeted questions about your product, then assembles the document automatically. Compare this to writing a PRD manually, which typically takes 4–8 hours for an experienced product manager.

What is the difference between a BRD and a PRD?

A BRD (Business Requirements Document) defines the business problem and goals — the 'why'. A PRD (Product Requirements Document) defines the product solution — the 'what'. In practice: the BRD is written first to get stakeholder alignment on business objectives; the PRD is written second to tell engineering teams what to build. Clearly generates both document types through separate AI-guided workflows.

How do I write a PRD?

To write a PRD: (1) Define the problem your product solves and the target user. (2) List the product goals and success metrics. (3) Describe each feature with user stories: 'As a [user], I want [feature] so that [benefit].' (4) Write acceptance criteria for each feature — specific, testable conditions that define 'done'. (5) List non-functional requirements: performance, security, accessibility. (6) Define what is out of scope. With Clearly's AI PRD generator, the AI walks you through each section and writes the document as you answer its questions.

Clearly

Free AI PRD & BRD Generator

Stop spending days writing Product and Business Requirements Documents. Clearly's free AI PRD generator turns your rough product idea into a complete, professional PRD or BRD in minutes — through a guided AI conversation that asks exactly the right questions.

Try Clearly Free → Built by Jaehee Song

Key Features

AI-Guided BRD Generation

Clearly leads you through a structured conversation to capture stakeholder needs, business context, and success criteria — then generates a complete Business Requirements Document automatically.

AI-Guided PRD Generation

From user stories to acceptance criteria, Clearly's AI interviews you about your product vision and outputs a full Product Requirements Document ready for your engineering team.

Document Versioning

Track every revision with built-in version history. Compare changes, restore previous versions, and maintain a clear audit trail as your requirements evolve.

Team Collaboration

Invite stakeholders, product managers, and engineers to review and comment on requirements in real time. No more emailing document drafts back and forth.

Admin Analytics

Track document creation activity, team engagement, and approval workflows from a centralized admin dashboard designed for product operations teams.

Structured Output

Every document follows proven BRD/PRD frameworks used in enterprise product development, ensuring your requirements are complete, unambiguous, and engineer-ready.

From Idea to Document in Minutes

BRD

Business Requirements

PRD

Product Requirements

Document versioning

Guided conversations

Why AI BRD and PRD Generation Matters

Writing a Product Requirements Document or Business Requirements Document is one of the most time-intensive steps in product development. Most teams either skip it — leading to misaligned development — or spend days producing documents that are outdated before they're finished.

Clearly's free AI PRD generator solves this. Instead of staring at a blank template, you have a conversation with an AI that understands requirements frameworks. It asks you about stakeholders, business objectives, constraints, user personas, and success metrics — then assembles a complete, structured document from your answers in minutes.

Clearly was built by Jaehee Song, who spent 17 years at Visa managing large-scale software projects. He understands firsthand how poor requirements documentation derails engineering teams — and built Clearly to prevent that at any scale.

Technology Stack

Google Gemini LangChain Google Cloud Run TypeScript Firebase Vite

What Is a PRD? What Is a BRD?

Product Requirements Document (PRD)

A Product Requirements Document (PRD) defines what a product must do — its features, user stories, acceptance criteria, and success metrics. It's the primary reference for your engineering, design, and QA teams during development. Without a clear PRD, teams build the wrong features, miss edge cases, and waste sprint cycles on requirements clarification.

A complete PRD typically includes: product overview, target users, problem statement, feature list with user stories, acceptance criteria per feature, out-of-scope items, success metrics, and non-functional requirements (performance, security, accessibility).

Business Requirements Document (BRD)

A Business Requirements Document (BRD) precedes the PRD. It defines the business problem and the outcomes a project must achieve — without specifying the solution. The BRD gets stakeholders aligned on the "why" before the team decides "what" to build. It covers: business objectives, current-state pain points, stakeholders, constraints, and measurable success criteria.

Key difference: The BRD defines the business need (why). The PRD defines the product solution (what). Clearly generates both document types through separate AI-guided workflows.

How to Write a PRD with AI (5 Steps)

Using Clearly's free AI PRD generator, you can write a complete Product Requirements Document in under 15 minutes:

Open Clearly at clearlyreqs.com — free to start, no credit card required.
Select "New PRD" from the document creation menu.
Describe your product idea — Clearly's AI asks targeted questions: what problem are you solving, who is your user, what are the core features?
Review the generated PRD — the AI assembles a complete document including user stories, acceptance criteria, and success metrics. Edit any section inline.
Share with your team — invite stakeholders via shared link or export to PDF for distribution and sign-off.

The same 5-step workflow applies to BRD generation — simply choose "New BRD" and answer the business-focused questions Clearly asks.

Frequently Asked Questions

Is Clearly free to use?

Yes. Clearly is free to try at clearlyreqs.com — generate BRD and PRD documents without a paid plan. Advanced features (document versioning, team collaboration, admin analytics) are on paid tiers.

How long does it take to generate a PRD?

5–15 minutes for a complete first draft. Compare that to 4–8 hours writing a PRD manually from a blank template. The AI does the heavy lifting; you just answer questions about your product.

What's the difference between a BRD and PRD?

A BRD defines the business problem (why the project exists). A PRD defines the product solution (what engineering will build). Write the BRD first to align stakeholders, then the PRD to guide your development team.

Can I use Clearly as a BRD generator?

Yes. Clearly generates both BRDs and PRDs. The BRD workflow focuses on business objectives, stakeholders, and success metrics. The PRD workflow adds feature lists, user stories, and acceptance criteria.