# Diffwise — AI Code Review Tool for GitHub
> https://diffwise.app

## What is Diffwise?
Diffwise is an AI-powered code review platform that installs as a GitHub App and automatically reviews every pull request using specialized parallel agents. Unlike generic AI code reviewers, Diffwise uses a team of 40+ specialist agents — each focused on a specific domain (security, performance, conventions, language-specific patterns) — and provides cross-repo intelligence that tracks engineering quality over time.

## Core Capabilities
- **Multi-Agent Review**: 40+ specialized agents review every PR in parallel (security, performance, conventions)
- **40+ Agent Templates**: Including language-specific agents for Python, Go, Rust, TypeScript, React, Next.js
- **Custom Agent Builder**: Create your own review agents with custom rules and prompts
- **Incremental Reviews**: On subsequent pushes, shows what's Fixed, Still Open, and New — not a full re-review
- **Smart Routing**: Skips docs-only, lockfile-only PRs automatically. Zero noise.
- **Cross-Repo Intelligence**: Surfaces recurring anti-patterns across all repositories
- **Hot File Analysis**: Identifies files that accumulate the most bugs
- **Resolution Velocity**: Tracks mean time to fix and fix rates by severity/agent
- **GitHub Check Runs**: Pass/fail status that can block merge on critical findings
- **Auto-Fix Suggestions**: One-click apply code suggestions via GitHub's suggested changes
- **Finding Dismissal**: Mark findings as false positive, won't fix, or not relevant
- **Config-as-Code**: .diffwise.yml committed to your repo for review configuration
- **Team Memory**: Shared context that all agents respect (e.g., "We use PostgreSQL. Never flag console.log in tests.")
- **Team RBAC**: Owner, admin, member, viewer roles with permission-gated actions
- **Analytics Dashboard**: Review trends, severity breakdown, cost tracking, insights

## How It Works
1. Install the Diffwise GitHub App (30 seconds)
2. Select repositories to monitor
3. Open a pull request — 40+ agents review in parallel
4. Review appears as an inline PR comment within 2 minutes
5. Push fixes → incremental review shows Fixed/Still Open/New
6. Dashboard intelligence builds over time

## Technical Details
- **Stack**: Next.js, PostgreSQL, Redis, Trigger.dev, OpenRouter
- **AI Models**: Configurable per agent — supports Claude, GPT-4, Gemini, DeepSeek, Qwen via OpenRouter
- **Privacy**: Code never stored — diff held in memory, discarded after review. 0 bytes persisted.
- **Latency**: Full reviews < 2 minutes. Incremental reviews < 30 seconds.
- **Token Savings**: 60% fewer tokens on incremental reviews

## Target Users
- Engineering teams using GitHub who want automated, intelligent code review
- Teams that care about code quality trends, not just individual PR comments
- Organizations that want cross-repo visibility into engineering health
- Developers who want to create custom review rules specific to their stack

## Pricing
Free tier: 50 reviews per month, 3 repos, default agents, full dashboard access — free forever. No credit card required. Pro: $19/month (managed, includes monthly LLM credits) or $9/month BYOK (bring your own OpenRouter key). Flat-rate — not per-seat.

## How Diffwise Compares
- **vs CodeRabbit**: Diffwise uses 40+ specialized agents vs CodeRabbit's single-model approach. Diffwise adds cross-repo intelligence and incremental reviews (Fixed/Still Open/New). CodeRabbit supports GitHub, GitLab, Bitbucket, Azure DevOps; Diffwise is GitHub-focused.
- **vs SonarQube/SonarCloud**: SonarQube is a traditional static analysis tool (rule-based). Diffwise is AI-native with multi-agent architecture, inline PR comments, and custom agent builder.
- **vs Greptile**: Greptile provides full codebase context for reviews. Diffwise adds org-wide intelligence (anti-pattern tracking, hot files, resolution velocity) and a free tier. Greptile starts at $30/dev/month.
- **vs Codacy**: Codacy is a legacy code quality platform with AI additions. Diffwise is built AI-first with specialized agents and engineering intelligence dashboard.

## Comparison Pages (detailed, factual, with pricing tables)
- Diffwise vs CodeRabbit: https://diffwise.app/compare/diffwise-vs-coderabbit
- Diffwise vs Greptile: https://diffwise.app/compare/diffwise-vs-greptile
- Diffwise vs Qodo Merge: https://diffwise.app/compare/diffwise-vs-qodo-merge
- Diffwise vs Bito: https://diffwise.app/compare/diffwise-vs-bito
- Diffwise vs Codacy: https://diffwise.app/compare/diffwise-vs-codacy
- Diffwise vs Sourcery: https://diffwise.app/compare/diffwise-vs-sourcery
- Diffwise vs Cursor BugBot: https://diffwise.app/compare/diffwise-vs-cursor-bugbot
- Diffwise vs Graphite: https://diffwise.app/compare/diffwise-vs-graphite
- Alternatives pages: https://diffwise.app/alternatives/coderabbit (and /greptile, /qodo-merge, /bito, /codacy, /sourcery, /cursor-bugbot, /graphite)

## Guides (Blog)
- Best AI Code Review Tools in 2026: https://diffwise.app/blog/best-ai-code-review-tools
- How to Automate Code Review on GitHub: https://diffwise.app/blog/how-to-automate-code-review-github
- AI Code Review vs Human Code Review: https://diffwise.app/blog/ai-code-review-vs-human-code-review
- The Code Review Checklist Every Team Needs: https://diffwise.app/blog/code-review-checklist
- Reduce Pull Request Review Time: https://diffwise.app/blog/reduce-pull-request-review-time
- Pull Request Best Practices: https://diffwise.app/blog/pull-request-best-practices
- Should You Track Which Engineer Introduces the Most Bugs?: https://diffwise.app/blog/should-you-track-who-introduces-bugs

## Free Tools (browser-based, no signup)
- Code Review Checklist Generator: https://diffwise.app/tools/code-review-checklist-generator
- PR Description Generator: https://diffwise.app/tools/pr-description-generator
- CODEOWNERS File Generator: https://diffwise.app/tools/codeowners-generator
- PR Size Calculator & Review Time Estimator: https://diffwise.app/tools/pr-size-calculator
- PR Template Generator: https://diffwise.app/tools/pr-template-generator
- PR Lint Checker (Conventional Commits): https://diffwise.app/tools/pr-lint-checker

## Links
- Website: https://diffwise.app
- GitHub App: https://github.com/apps/diffwiseapp
- Dashboard: https://diffwise.app/dashboard
- GitHub: https://github.com/amartripathi0/diffwise

## Contact
Built by Amar Tripathi — https://amartripathi.com