🚀 2400+ AI tools in the Mega Directory — catalogue updated November 2026.

GitLab Duo

GitLab's AI features that suggest code, summarize merge requests, and help secure and review code inside the DevSecOps platform.

Coding AssistantsPaidDuo Pro $19/user/mo add-on

GitLab Duo is the AI layer across GitLab's DevSecOps platform. It suggests code as you write, explains and summarises merge requests, helps review changes, and assists with security: it can explain vulnerabilities, suggest fixes, and help with compliance tasks. The AI works where your team already works, inside GitLab.

Key Features

  • Code suggestions inside GitLab and your IDE
  • Merge request summaries and review assistance
  • Vulnerability explanations and fix suggestions
  • Issue and discussion summarisation
  • Test generation and pipeline help
  • Works across the full DevSecOps lifecycle

Pricing

PlanPriceDetails
Duo Pro$19/user/moCode suggestions, chat, merge request summaries, and review help.
Duo Enterprise$39/user/moAdds advanced security assistance, customisation, and enterprise controls.

Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: No free plan — paid plans only.

Best for: teams that run their whole DevSecOps workflow in GitLab and want AI help at every stage.
Popular with: Developers, Business Owners

How it works

Duo is designed for the full software lifecycle, not just coding. It can summarise issues and discussions, help write tests, and answer questions about your codebase and pipelines. Because it is part of GitLab, it understands your project's merge requests, CI results, and security findings in context.

GitLab Duo Pro costs $19 per user per month as an add-on, and Duo Enterprise costs $39 per user per month with more advanced features such as deeper security assistance and customisation. It is the right pick for GitLab teams; if you use another platform, a standalone coding assistant will fit better.

Pros and Cons

✓ Pros

  • Covers the whole lifecycle, not just code writing
  • Understands merge requests, CI, and security findings
  • Strong vulnerability explanation and fix help
  • No extra tool to install for GitLab teams

✗ Cons

  • Only useful if you already use GitLab
  • Duo is an add-on cost on top of GitLab licences
  • Enterprise plan is priced for larger organisations

Frequently Asked Questions

Is GitLab Duo free?

No — GitLab Duo has no free plan. Duo Pro $19/user/mo add-on

What is GitLab Duo best for?

teams that run their whole DevSecOps workflow in GitLab and want AI help at every stage.

What kind of tool is GitLab Duo?

GitLab Duo is a Coding Assistants tool on VerlumoAI.

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Last reviewed: November 2026

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