A New Way of Writing Through AI

Write Your Functional Specification Document in 1 Hour Instead of a Week

DocGenius guides you step by step to create a complete, structured, and professional functional specification document with a conversational AI that asks the right questions. Save a tremendous amount of time while guaranteeing a top-quality document.

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A new way to write, with you at the center

DocNexus doesn't write for you: it writes with you.

A Perfectly Structured Spec Document With No Technical Expertise Required

Our AI works alongside you, asking the essential questions at every step. Context, objectives, functional requirements, technical constraints, timelines... You won't miss a single crucial detail. The final document meets professional standards with flawless formatting, ready to share with your teams and vendors.

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Join those who have transformed the way they write.

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I have always believed that AI should not replace humans, but empower them. DocNexus puts domain expertise back at the center by helping you structure and challenge your thinking. That is what true augmented intelligence looks like.

Luc Julia
Luc Julia Co-creator of Siri, Chief Scientific Officer at Renault
+ 260,000

Documents created with DocNexus

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Hours of Writing Saved

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AI-Generated Questions

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Create Any Type of Technical Document in Record Time

DocGenius isn't limited to functional specification documents. Write technical specifications, analysis reports, scoping documents, contracts, or any other professional document with the same efficiency.

See All Document Types

Smart Questions With Suggested Answers to Move Fast

For each section of your specification document, DocGenius offers answer suggestions tailored to your context. Select them or customize them to fit your needs, which dramatically speeds up the writing process.

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A Document That Adapts to Your Context and Your Style

Our AI understands your industry, the level of detail you want, and your communication style. Whether you work for an agile startup or a large company with formal processes, the final document will be perfectly aligned with your needs.

Tailor My Spec Document to My Context

Professional Export With Table of Contents and Flawless Formatting

Download your specification document in .docx format with a clear structure, a navigable table of contents, consistent numbering, and professional formatting. The document is immediately usable and ready to present to your stakeholders.

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Three Steps to Create Your Spec Document

A proven technology that radically transforms document production.

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1

Create Your Free Account

Sign up in seconds to access DocGenius and start writing your functional specification document with no commitment.

2

Answer the AI's Questions

Our AI guides you with precise, context-aware questions to gather all the information needed. No technical writing expertise required.

3

Get Your Complete, Professional Document

In less than an hour, get a structured, detailed, and ready-to-use functional specification document in Word or PDF format.

Write in 6 Different Languages With the Same Quality

Need to create your functional specification document in English, French, Italian, Spanish, German, or Portuguese? DocGenius lets you write in all 6 languages with the same level of quality and technical precision.

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Regenerate and Refine Any Section as Much as You Want

Is your project evolving? Need more detail in certain sections? DocGenius lets you regenerate or refine all or part of your specification document at any time, without starting over from scratch.

Keep Improving My Document

Our Plans

Simple, transparent pricing that scales with your growth.

Pro

Ideal for freelancers

$99 / month
Max project size

Linked documents included

100 Pages
300 credits / month
equivalent to
~ 300 pages written

Collaborative workspace
Unlimited users
Documents unlimited
Knowledge Base
Unlimited storage
Smart evaluation
Structure and presentation
Content and Coherence
Adaptation and Relevance
Argumentation and sources

Recommended

Plus

For strategic documents

$199 / month
Max project size

Linked documents included

250 Pages
600 credits / month
equivalent to
~ 600 pages written

Collaborative workspace
Unlimited users
Documents unlimited
Knowledge Base
Unlimited storage
Smart evaluation
Structure and presentation
Content and Coherence
Adaptation and Relevance
Argumentation and sources
Compliance and Standards

Business

Designed for teamwork

$399 / month
Max project size

Linked documents included

500 Pages
1 200 credits / month
equivalent to
~ 1 200 pages written

Collaborative workspace
Unlimited users
Documents unlimited
Knowledge Base
Unlimited storage
Smart evaluation
Structure and presentation
Content and Coherence
Adaptation and Relevance
Argumentation and sources
Compliance and Standards
Custom evaluation
 

Entreprise

Plan tailored to fit your needs


Max Project Size: 1,000 Pages
Dedicated support and training
Group access management
Volume discounts
Custom integration

Turn a Week of Work Into a Single Hour of Conversation

Join the thousands of professionals who have already chosen DocGenius to write their functional specification documents. Focus on your business expertise while our AI handles structuring and formalizing your document.

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Notre FAQ

Yes, creating an account is completely free, and you get the first five pages generated at no cost to write your first specification document. For larger documents or regular use, we offer different subscription plans tailored to your needs.

With a free account, you can start one document. Our subscription plans let you create an unlimited number of specification documents and other professional documents, ideal for teams managing several projects at once.

Absolutely! Once your specification document is generated, you can download it in Word format (.docx) and make any changes you want. You can also return to DocGenius to regenerate or refine specific sections without losing your previous answers.

For a standard functional specification document, expect about an hour of conversation with our AI. For more complex or detailed projects, it may take up to 2-3 hours, which is still significantly faster than traditional methods that often require a full week of work.

That's exactly what DocGenius was built for! Our AI guides you step by step, asks you the right questions, and suggests tailored answers. Even with no prior experience in technical writing, you'll get a professional document that follows all industry best practices. This helps you avoid the common omissions that often happen with this type of document.