> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mergewatch.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# MergeWatch vs GitHub Copilot code review

> Dedicated multi-agent PR reviewer you can self-host vs GitHub's bundled in-platform review feature.

<Note>
  **Verified April 2026.** Sourced from [github.com/features/copilot](https://github.com/features/copilot) and [docs.github.com Copilot code review](https://docs.github.com/en/copilot/using-github-copilot/code-review/using-copilot-code-review). Verify current details against those pages before purchasing.
</Note>

## At a glance

|                    | MergeWatch                               | GitHub Copilot code review                                                               |
| ------------------ | ---------------------------------------- | ---------------------------------------------------------------------------------------- |
| License            | AGPL-3.0                                 | Closed-source, bundled in Copilot                                                        |
| Self-host          | Docker + Postgres, any cloud             | No (GitHub.com infrastructure)                                                           |
| BYO LLM            | Bedrock, Anthropic, LiteLLM, Ollama      | No — uses Copilot's internal selection                                                   |
| Agent architecture | 6 review + 2 utility agents, parallel    | Not publicly documented                                                                  |
| Trigger            | PR webhook, `@mergewatch`, Checks re-run | Manual or auto-assigned reviewer, IDE, `gh` CLI                                          |
| Pricing            | Usage-based via Stripe balance           | Included in Copilot Pro/Business/Enterprise; premium requests for unlicensed org members |
| Data retention     | Diff in-memory; 90-day metadata TTL      | Business/Enterprise: 28-day prompt retention, 2-year engagement data                     |

## GitHub Copilot code review

* **What it is.** A pull-request review feature built into GitHub Copilot that "provides contextual explanations and code suggestions to help developers fix vulnerabilities in code." ([docs.github.com](https://docs.github.com/en/copilot/using-github-copilot/code-review/using-copilot-code-review))
* **Trigger model.** Manual by default — open the Reviewers menu on a PR and select Copilot; reviews typically complete "in less than 30 seconds." Can be configured to auto-review all PRs. Works across GitHub web, VS Code, Visual Studio 17.14+, GitHub Mobile, Xcode, JetBrains IDEs, and `gh` CLI. ([docs.github.com](https://docs.github.com/en/copilot/using-github-copilot/code-review/using-copilot-code-review))
* **Where it runs.** SaaS only (github.com infrastructure). ([github.com/features/copilot](https://github.com/features/copilot))
* **LLM flexibility.** The exact model powering Copilot code review is not specified on the public pages. Copilot-as-platform uses models from OpenAI, Anthropic, Google, and Microsoft, but the specific one for review is not publicly documented.
* **Open source.** Closed-source.
* **Agent architecture.** Not publicly documented.
* **Pricing.** Included in Copilot Pro, Business, and Enterprise. For non-licensed users accessing it through an org, usage bills as "premium requests." ([github.com/features/copilot](https://github.com/features/copilot))
* **Data handling.** For Business/Enterprise tiers on github.com, prompts and suggestions are retained for 28 days; user engagement data for two years.

## Where MergeWatch differs

* **You control the infrastructure.** Copilot review runs on GitHub.com; your code flows through Microsoft. MergeWatch self-hosted keeps the PR diff and all review metadata inside your own VPC / cluster.
* **You choose the model.** Copilot's review model is a black box. MergeWatch lets you route to Bedrock Claude Sonnet, Anthropic direct, any OpenAI / Azure / Gemini / Mistral model via LiteLLM, or a local Ollama model. Swap with one env var.
* **You can audit the review logic.** AGPL-3.0: every prompt, every orchestration rule is public. Copilot's review behavior is not documented.
* **Documented multi-agent pipeline.** Six specialized review agents (security, bug, style, error handling, test coverage, comment accuracy) plus two utilities (summary, diagram) run in parallel. Copilot's internal composition is not disclosed.
* **Merge-readiness score.** MergeWatch surfaces a 1–5 composite. Copilot review produces inline suggestions without a composite gate.
* **No per-seat Copilot license required.** MergeWatch is a direct GitHub App install; reviews cost only your LLM provider + an optional managed-SaaS margin.

## When Copilot code review might be the better fit

* You already pay for Copilot Business or Enterprise org-wide and want zero additional setup — Copilot review is already on.
* Your team relies on deep IDE integration across VS Code, Visual Studio, JetBrains, and Xcode, and wants review in the same surface as inline completion.
* You want reviews to complete "in less than 30 seconds" on small PRs without managing LLM provider accounts.
* You have strict GitHub-sole-vendor policies and can't introduce new third-party apps with `contents: read`.

## Cross-links

* [Full quick matrix](/comparisons/overview)
* [Feature matrix](/comparisons/feature-matrix)
* [GitHub App permissions](/github-app/permissions) — exactly what MergeWatch requests when installed.