GitLab Duo
AI across the whole DevSecOps lifecycle — code suggestions, root-cause analysis, and agentic workflows inside GitLab.
About
GitLab Duo is GitLab's AI layer spanning the entire DevSecOps lifecycle rather than just the editor. Duo Pro ($19/user/month on top of Premium or Ultimate) adds code suggestions, test generation, refactoring, and Duo Chat in VS Code, JetBrains, and the GitLab Web IDE. Duo Enterprise ($39/user/month) goes further with Root Cause Analysis that reads CI job failure logs and opens merge requests with fixes, plus the Duo Agent Platform — agentic workflows for planning, security analysis, and pipeline repair, metered via GitLab Credits with $12-24/user/month included.
The honest picture: it is only worth it if you are already on GitLab Premium ($29/user/month) or Ultimate, making the true floor $48/user/month. It is GitLab-only — multi-platform teams get nothing. Credits for agentic features burn fast on heavy workflows, and contractually it is a significant per-seat commitment.
What it can do
- AI code suggestions, test generation, and refactoring in IDE
- Duo Chat for codebase and pipeline questions
- Root Cause Analysis of CI job failures with auto-fix MRs
- Duo Agent Platform for agentic SDLC workflows
- Self-hosted model support for air-gapped deployments
- Multi-model backend (Anthropic and open-source via vLLM)
Setup
Enable Duo in your GitLab group settings; install the GitLab Workflow extension for VS Code or JetBrains. Assign Duo seats to users.
Prerequisites
GitLab Premium or Ultimate subscription; admin access to enable AI features.
Use cases
Works with
Trust score — 7/10
Scored 7/10 (metrics tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 57; Trending score 72/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.