Ellipsis: A GitHub Copilot Alternative for AI-Powered Code Reviews and Bug Fixes
Ellipsis is an AI-powered code review and bug fix platform developed by Ellipsis AI (YC W24). It automatically reviews every commit of every pull request for logical bugs, style guide violations, and anti-patterns, and can also generate working, tested code when assigned work via GitHub comments. As a GitHub Copilot alternative, it is best suited for engineering teams who want automated code review at scale, not just inline autocomplete suggestions.
Ellipsis vs. GitHub Copilot: Quick Comparison
| Ellipsis | GitHub Copilot |
|---|
| Type | AI Code Review (GitHub/GitLab app) + IDE + CLI | IDE Extension / CLI |
| IDEs | GitHub/GitLab (primary); IDE and CLI also available | VS Code, JetBrains, Vim, Neovim, Visual Studio, Xcode |
| Pricing | Free for public repos; $20/developer/month (unlimited usage) | Free for students/OSS; Individual $10/mo; Business $19/mo; Enterprise $39/mo |
| Models | Third-party LLM providers (OpenAI); no model training on user code | OpenAI GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro (multi-model) |
| Privacy / hosting | Cloud (AWS VPC); no code retention post-review; SOC 2 Type 1 certified | Cloud (GitHub/Microsoft) |
| Open source | No | No |
| Offline / local models | No | No |
Key Strengths
- Automatic PR reviews on every commit: Ellipsis reviews every commit of every pull request automatically, without requiring developers to manually trigger it. It catches logical bugs, anti-patterns, and style guide violations that human reviewers often miss in fast-moving codebases. This is a fundamentally different capability from GitHub Copilot's inline autocomplete.
- Async code generation via GitHub comments: Developers can tag
@ellipsis-dev in a GitHub comment to assign a task — Ellipsis will generate working, tested code a few minutes later. This turns PR comments into a lightweight task queue for AI-assisted development without requiring an IDE.
- 67,000+ repositories and 400+ companies: Ellipsis is installed in over 67,000 GitHub repositories and trusted by 400+ companies, including backing from Y Combinator (W24). Dalton Caldwell (YC Group Partner) specifically called it out as getting great buzz for how well it actually works.
- Style guide as code: You can write your team's style guide in natural language, and Ellipsis will flag violations on every PR. This is configurable per repository and learns from feedback — over time, reviews become more aligned with your team's specific preferences.
- Privacy-first with no data retention: Ellipsis does not persist source code anywhere after processing. Code lives only in a private AWS VPC during review jobs. LLM providers do not use code or messages for training and do not store data for more than 30 days. The product is SOC 2 Type 1 certified.
Known Limitations
- Not a real-time inline IDE assistant: Ellipsis's primary interface is GitHub and GitLab pull requests, not inline autocomplete inside your editor while you type. Developers who want real-time code suggestions as they work need to use a separate tool like GitHub Copilot or Cline alongside Ellipsis.
- Diff-based review only: Ellipsis reviews what changed in the PR, not the entire codebase holistically. Architectural problems and complex cross-file dependencies that are not visible in the diff may not be caught. Whole-codebase awareness requires separate tools.
- Flat per-seat pricing: At $20/developer/month, Ellipsis is priced per seat rather than per use. For very small teams with low PR volume, this may feel expensive relative to the usage. The free tier for public repos does help open-source projects.
Best For
Ellipsis is best suited for engineering teams that have a high volume of pull requests and want automated, high-quality code reviews that complement rather than replace human reviewers. It is particularly valuable for teams that have established coding style guides and want those enforced automatically on every PR, and for startups and scale-ups that want to stretch their review capacity without hiring additional senior engineers. The free tier for public repos makes it accessible for open-source maintainers.
Pricing
- Free: Full access for public GitHub and GitLab repositories. No credit card required.
- $20/developer/month: Unlimited usage for private repositories. Includes AI code reviews on every commit, PR summaries, unlimited code generation, and Q&A functionality.
- Enterprise: Self-hosting option, priority support, customer success manager, and invoice billing. Pricing on request.
Prices are subject to change. Check the official pricing page for current details. Annual billing discount available (saves 20%).
Tech Details
- Type: AI Code Review app (GitHub/GitLab) + IDE + CLI
- IDEs: GitHub/GitLab PR integration (primary); IDE and CLI also available
- Key features: Automatic PR code reviews, bug detection, anti-pattern flagging, PR summaries, async code generation via comments, style guide as code, feedback-based learning, change log generation, Q&A via comments, SOC 2 Type 1 certified, no code retention
- Privacy / hosting: Cloud (private AWS VPC); no code stored post-review; no model training on user code
- Models / context window: Third-party LLM providers (OpenAI); specific models not publicly documented; no user code used for model training
When to Choose This Over GitHub Copilot
- You want automated code review on every PR without manually assigning reviewers or waiting for human availability — Ellipsis reviews every commit automatically.
- You want to enforce a custom style guide in natural language without writing linter rules — Ellipsis flags violations based on your written guidelines.
- You want code reviews that improve over time based on your team's feedback and preferences, rather than generic AI suggestions.
- You need maximum privacy guarantees — Ellipsis deletes code post-review, does not use code for training, and is SOC 2 Type 1 certified.
When GitHub Copilot May Be a Better Fit
- You primarily want real-time inline autocomplete suggestions as you type code in your editor — Ellipsis does not provide this.
- You want a single tool that covers both code generation and code review — Copilot covers more of the inline coding workflow, while Ellipsis focuses on the PR review stage.
- Your team needs broad IDE support across VS Code, JetBrains, Visual Studio, and Xcode in a single subscription — Ellipsis is primarily GitHub/GitLab-native.
Conclusion
Ellipsis is the strongest AI code review tool for teams that want automated, high-quality PR reviews at scale — especially teams with style guides and high PR velocity. It complements inline coding tools like GitHub Copilot rather than replacing them, filling the specific gap of consistent, automated code review that teams often struggle to maintain at speed.
Sources
FAQ
Is Ellipsis free?
Yes, Ellipsis is free for public GitHub repositories. For private repositories, the plan is $20 per developer per month with unlimited usage. A 7-day free trial is available for private repos. Annual billing saves 20%.
Does Ellipsis work with VS Code?
Ellipsis's primary interface is GitHub and GitLab pull requests, where it automatically reviews every commit. An IDE integration and CLI are also available. It is not a VS Code extension in the traditional sense — it works at the PR review layer rather than providing inline autocomplete as you type.
How does Ellipsis compare to GitHub Copilot?
GitHub Copilot provides real-time inline code suggestions inside your editor. Ellipsis provides automatic AI code reviews on every pull request, catching bugs, anti-patterns, and style violations. They serve complementary roles — Copilot helps you write code faster, while Ellipsis reviews the code you write before it merges.
Is my code safe with Ellipsis?
Yes. Ellipsis does not persist your source code anywhere after completing a review job. Code lives only in a private AWS VPC during processing. LLM providers do not use your code for model training and do not store data for more than 30 days. Ellipsis is SOC 2 Type 1 certified.
