Cheapest Documentation Platforms in 2027 (Honest Comparison)

Documentation platforms have gotten expensive. Mintlify Pro is $450/month on annual billing (or $540/month if you pay monthly). ReadMe's cheapest paid tier is $250/month. GitBook starts charging per site the moment you need a custom domain.

What if you just need good docs without the enterprise pricing?

Here's an honest comparison of the cheapest documentation platforms in 2027, with prices checked this month — not copied from a pricing page we looked at once in February.

The Quick Answer#

If you want the cheapest good documentation platform:

Now let's break down each option.

Before the breakdown, here's what going from zero to a live docs site looks like on Dokly:

---

Tier 1: Completely Free#

Docusaurus (Free, Self-Hosted)#

Cost: $0 (you pay for hosting)

Docusaurus is Meta's open-source documentation framework. It's genuinely free and full-featured.

What you get:

• Full MDX support
• Versioning
• Search (via Algolia free tier)
• Complete customization
• Large plugin ecosystem

What you'll pay for:

• Hosting: $0-20/month (Vercel, Netlify, GitHub Pages)
• Domain: ~$12/year
• Your time: Setup takes 2-4 hours minimum

Hidden costs:

• Maintenance burden
• No visual editor (Markdown/Git only)
• Search configuration takes time
• Styling requires CSS knowledge

Best for: Developers comfortable with React who have time to set up and maintain.

---

Dokly Free Tier#

Cost: $0

Dokly's free tier is designed for indie developers and small projects.

What you get:

• 1 project
• Unlimited pages
• Visual MDX editor
• Your subdomain (yourproject.dokly.co)
• Full-text search
• All MDX components
• 15 AI credits per month

Limitations:

• No custom domain
• Dokly branding on footer
• One project only

Best for: MVPs, side projects, testing the platform.

---

ReadMe Starter (Free)#

Cost: $0

ReadMe renamed its free plan "Starter" and it's genuinely usable, not a stripped-down trial. It ships a custom domain, bi-directional sync, an interactive API reference, usage analytics, and — notably — ReadMe's own MCP server and llms.txt support, for free.

Limitations:

• One project and one published version
• One admin seat only
• No team features (invites, multiplayer editing, branching, private docs)

Best for: A solo developer shipping API docs who doesn't need a team yet.

GitBook Free Tier#

Cost: $0

GitBook's free plan is also stronger than a typical trial today — it includes Git Sync, llms.txt, and an MCP server for one user.

What you get:

• Git Sync (one or two-way, depending on plan)
• llms.txt and an MCP server
• GitBook subdomain

Limitations:

• No custom domain
• Only one user
• Custom domain and more seats require Essential

---

Tier 2: $29-100/month#

Dokly Starter — $29/month#

Cost: $29/month

Dokly Starter is the cheapest way to get a custom domain. One project, no analytics, everything else from Free.

Best for: A single docs site that just needs docs.yourcompany.com and nothing more.

Dokly Team — $99/month#

Cost: $99/month

Dokly Team is where most small teams land. It includes everything you need without enterprise pricing.

What you get:

• 5 projects
• Unlimited pages
• Custom domain (docs.yourcompany.com)
• Analytics dashboard
• AI writing (1,500 credits per month included)
• Auto-generated llms.txt
• API playground
• Remove Dokly branding
• Works with your AI agent over MCP: it writes drafts, you review a diff, then publish
• Priority support

Compared to competitors (prices checked this month):

Best for: Startups, growing projects, anyone who wants Mintlify-level polish for a fifth of the price.

---

GitBook Essential — $65/site/month + $12/user#

Cost: $65/site/month + $12/user, billed annually

GitBook's mid-tier plan, priced per site rather than for the whole team.

What you get:

• Custom domain
• The "Ask" mode of GitBook Assistant
• Metered auto-translation
• Git sync

Watch out for:

• Per-site pricing adds up fast with more than one site — five sites on Essential with one user is $337/month before anyone else joins
• Chat mode of Assistant and AI Insights need Ultimate ($249/site + $12/user)

---

ReadMe Pro — $250/month#

Cost: $250/month, billed annually (there is no cheaper paid tier)

ReadMe specializes in API documentation, and Pro is where team features start.

What you get:

• Everything in Starter, plus teammate invites, multiplayer editing, branching and reviews, private docs
• AI Linter, AI Writer, and Ask AI Lite (full Ask AI is still a $150/month add-on on top)

Best for: API-first companies that have outgrown the one-admin Starter plan and need interactive documentation with a team.

---

The Hidden Costs Nobody Talks About#

When comparing prices, look beyond the headline number:

Per-Seat and Per-Site Pricing#

Some platforms charge per user, per site, or both:

• Mintlify: flat Pro price, but its Assistant is metered: 10,000 credits/month, then $0.01/credit
• GitBook: $12/user/month on top of each site's base fee
• Notion: $10/month per user
• Dokly: No per-seat fees on any plan

A GitBook team running docs, a help center, and a changelog as three separate sites with five editors is paying $12/user × 5 per site, three times over.

Usage Overages#

Watch for metered features:

• Mintlify AI: $0.01/credit after the 10,000-credit monthly pool (about 400 answers at 25 credits each)
• ReadMe Ask AI: a flat $150/month add-on, on every tier including the free one

Annual Lock-In#

Many platforms offer "discounts" for annual billing. That's really a lock-in. If the product doesn't work out, you've prepaid for 12 months — Mintlify Pro, for instance, is $450/mo annual versus $540/mo if you'd rather pay monthly and stay flexible.

Dokly tip: We offer monthly billing with no penalty. Try it, cancel anytime.

---

The Real Cost Comparison#

Here's what a year actually costs for a small team (2-3 editors), prices checked this month:

The best value for most teams: Dokly Free while a subdomain is fine, then Dokly Team at $1,188/year once you need a custom domain, AI credits, and an API playground. That's a fifth of Mintlify's annual bill.

---

How to Choose#

Choose Docusaurus if:#

• You have developer time for setup
• You want total control
• Open source project with no budget

Choose Dokly if:#

• You want modern features without enterprise prices
• Visual editor is important
• AI-readiness (llms.txt) matters, or you want your own AI agent to write docs over MCP
• You want to start at $0 and pay $29-$99/month only once you need a custom domain

Choose GitBook if:#

• Two-way Git sync is critical
• You're already in their ecosystem and only run one site

Choose ReadMe if:#

• You need deep API-metrics and developer-portal features and the team is already funded for $250/month

Choose Mintlify if:#

• You have $450+/month budget
• Advanced, reader-facing AI features are essential
• Brand perception matters for sales

When Dokly isn't the cheapest right fit: if you need two-way Git sync, SAML SSO, or a reader-facing AI chat widget on your published docs today, every option above beats Dokly on that specific feature — we're honest about that in our alternatives pages. Pick on what you actually need, not just price.

---

The Bottom Line#

You don't need to spend $450/month on documentation. For most teams, $99/month gets you:

• Custom domain
• Visual MDX editor
• AI writing assistance
• Analytics
• Auto-generated llms.txt
• Your own AI agent writing over MCP, with every change reviewed as a diff before it publishes

That's Dokly Team.

Start on Free — no credit card. Every new account also gets Team itself free for 14 days, so you can try the custom domain and AI features before paying anything.

Create your docs →

Frequently Asked Questions#

Is there a truly free documentation platform with no catch?#

Docusaurus is free and open source with no feature gate — you pay only for hosting. Among hosted options, Dokly Free and ReadMe Starter are both genuinely usable free tiers, not time-limited trials, though both cap you to one project.

Why is Mintlify so much more expensive than it used to be?#

Mintlify restructured its plans; Pro is now $450/month on annual billing or $540/month billed monthly, and its reader-facing AI Assistant is metered at 10,000 credits a month before you pay $0.01 per credit on top. There's no cheaper paid tier between the free Starter plan and Pro.

Does GitBook's per-site pricing really add up that fast?#

Yes. GitBook Essential is $65 per site per month plus $12 per user, billed annually. Run three sites — docs, a help center, and a changelog — with five editors each, and you're paying the $12 per-user fee fifteen times over on top of three separate site fees.

What's the cheapest way to get a custom domain on my docs?#

Dokly Starter at $29/month is the cheapest custom-domain option in this comparison. GitBook's cheapest paid tier with a custom domain, Essential, is $65/site plus $12 for the one user, so $77/month minimum.

Is ReadMe worth $250/month if I'm not doing API docs?#

Probably not. ReadMe's team features — branching, reviews, private docs, multiplayer editing — are built around API reference workflows. If you're writing general product documentation, Dokly or GitBook will fit a general knowledge base more naturally for less money.

---

Competitor pricing checked November 2026 against each vendor's own pricing page (Mintlify, ReadMe, GitBook). Dokly pricing as of November 2026. We update this post as prices change.