CC GUIvsGitLab Duo
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
CC GUI
CodeMoss AI · Agent harness
OSSMCP
Panel
6.93 spec wins
- Reliability
- 6.5
- Usefulness
- 7.3
- Cost
- 7.8
- Longevity
- 6.0
“Session history has search, favourites and export, so you can now bookmark your favourite conversation with a robot.”
GitLab Duo
GitLab · Agent harness
MCP
Panel
6.84 spec wins
- Reliability
- 6.7
- Usefulness
- 6.5
- Cost
- 5.8
- Longevity
- 8.0
“It has shipped a Security Analyst agent, so the robot now files the vulnerability the other robot wrote.”
Spec by spec
| Spec | CC GUI | GitLab Duo |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local, cloud |
| Platforms | macos, linux, windows | macos, linux, windows, web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | YesThe plugin itself is a front end; command execution and file editing happen in the CLI engine it launches. | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | No | Yes |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | YesA built-in agent system automates complex tasks and the plugin can switch between eight different CLI engines. | Yes |
| Headless / CI mode | No | YesFlows started from the GitLab UI execute in GitLab CI/CD runners. |
| Models | ||
| Backbone | Claude, OpenAI, Grok, Kimi, DeepSeek, OpenCode | Anthropic Claude |
| Bring your own model | Yes | YesOnly through the GitLab Duo Self-Hosted deployment on Self-Managed instances. |
| Local models | No | YesGitLab Self-Managed instances can run Duo against self-hosted models through a self-installed AI Gateway; GitLab.com uses GitLab-selected models. |
| Cost | ||
| Pricing model | byok | seat |
| Starts at | $0/mo | n/a |
| Free tier | Yes | No |
| Bring your own key | Yes | No |
| Openness | ||
| Open source | Yes | No |
| License | MIT | proprietary |
| GitHub stars | 6,759 | n/a |
Which one would each critic pick
| Critic | CC GUI | GitLab Duo | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.3 | 7.0 | CC GUI — Pick this if you live in a JetBrains IDE and want the Claude Code panel without a second window; pick Swttch if you only ever use one engine and want a thinner wrapper. |
| El Crítico | 6.3 | 6.5 | GitLab Duo — An agent with shell access and commit rights runs inside the system that holds the source, the pipelines and the deploy credentials, with no container boundary of its own. |
| El Profesor | 7.5 | 7.0 | CC GUI — The listing documents its own network path: requests go direct to the official API unless a proxy is set, the route is labelled first, and no credential is read without a dialog. |
| La Inversora | 7.3 | 8.0 | GitLab Duo — Bundling the entry tier into Premium and Ultimate is an attach-rate play, not a product launch: the AI is defending the subscription, not selling itself. |
| La Jefa | 5.3 | 7.3 | GitLab Duo — The add-on seats are quoted rather than listed, and Agent Platform usage draws down purchased Credits, so sixty developers is one number I cannot compute in advance. |
| El Hacker | 8.0 | 4.8 | CC GUI — MIT with a gradlew buildPlugin target, so the fork path is a clone away, and MCP servers attach to the panel rather than to whichever CLI happens to be running. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.