AI Assistants & Code Review Tools
AI coding assistants have become the standard for modern software development. These tools integrate directly into your workflow to provide real-time suggestions, automate documentation, and catch bugs before they reach production. In this category, we explore the top <strong>AI assistants and code review tools</strong> that serve as your always-on pair programmer, helping you write cleaner, safer, and more efficient code.
Top AI Assistants & Code Review tools right now
If you want to start fast, try GitHub Copilot, Claude Code CLI and Gemini Code Assist.
GitHub Copilot
GitHub Copilot
Pro $10/month per user, Business $19/month per user
AI coding assistant integrated into GitHub and VS Code. Generates code, fixes bugs, merges PRs, and now supports agent workflows. The original mainstream AI code tool.
Gemini Code Assist
Gemini Code Assist
Free and paid tiers (varies by edition)
Google's AI coding assistant for supported IDEs and Google Cloud workflows.
Claude Code CLI
Claude Code CLI
Free with Claude API key, Usage-based pricing
Command-line interface for Anthropic's Claude AI, designed for developers who prefer terminal-based workflows. Provides intelligent code analysis, generation, and review capabilities directly from the command line.
Cody
Cody
Free tier available, Pro $9/mo
AI coding assistant that uses Sourcegraph's code graph to understand your entire codebase. Best-in-class for large enterprise repositories and precise context fetching.
IntelliCode
IntelliCode
Free
Microsoft's AI-assisted development tool for Visual Studio and VS Code. Provides whole-line completions and API usage examples based on thousands of open-source projects.
JetBrains AI
JetBrains AI
Included in Subscription / Paid Add-on
Deeply integrated AI assistant for JetBrains IDEs (IntelliJ, PyCharm, WebStorm). Offers context-aware chat, refactoring, and code generation.
Pieces
Pieces
Free & Paid versions
AI-powered snippet manager and productivity tool. Saves, organizes, and explains code snippets. Works offline and integrates with your workflow.
Refact.ai
Refact.ai
Free & Paid plans
AI coding assistant specialized in refactoring and technical debt reduction. Can run on local or remote models, emphasizing privacy and code quality.
Fine
Fine
Paid plans
AI assistant focused on automating coding, debugging, testing, and code review for startup teams.
Augment Code
Augment Code
Paid plans
Coding assistant that uses your team's knowledge (code, docs, dependencies) via chat, completions, and suggested edits.
Qodo
Qodo
Paid plans
Coding assistant focused on code quality: reviews, tests, and improvements.
GoCodeo
GoCodeo
Paid plans
Tool focused on generating tests and helping debug issues quickly.
Your Intelligent Pair Programmer for Every Stack
Beyond Autocomplete: The Evolution of AI Assistants
What started as simple code completion has evolved into sophisticated reasoning engines. Modern AI assistants like GitHub Copilot and Claude Code CLI don't just guess the next word; they understand the intent behind your code. They can generate unit tests, explain complex regex, and even translate code between languages.
Automating Code Reviews
One of the most powerful applications of AI in 2025 is automated code review. Tools in this category can analyze Pull Requests (PRs) instantly, flagging potential security vulnerabilities, performance bottlenecks, and style violations. This speeds up the review cycle significantly, allowing human reviewers to focus on logic and architecture rather than syntax nits.
Top Capabilities
- Chat Interfaces: Ask questions about your codebase in natural language.
- Test Generation: Automatically create comprehensive test suites for your functions.
- Refactoring: Suggest cleaner ways to write complex logic.
- Documentation: Generate docstrings and READMEs automatically.
The Impact on Developer Velocity
Integrating an AI assistant is often the highest-ROI action a development team can take. It flattens the learning curve for new languages and frameworks, reduces context switching, and acts as a rubber duck that actually talks back with useful solutions.
Frequently Asked Questions
Is GitHub Copilot the only good AI assistant?
No. While Copilot is the most famous, tools like Claude Code CLI and Amazon Q offer unique features. Claude, for example, excels at complex reasoning and large context windows.
Can AI assistants fix bugs automatically?
They can often identify the root cause of a bug and suggest a fix, but you should always review the solution. They are assistants, not replacements for human judgment.
Do these tools work offline?
Most powerful AI assistants require an internet connection to access the large language models (LLMs) that power them. However, some local-first models are emerging for privacy-conscious users.
Find the best AI Assistants & Code Review tool for your workflow
Use this category page as a curated shortlist of AI Assistants & Code Review tools. You can explore each tool’s features on its tool page, then compare options via their alternatives pages. If you want to browse everything, head back to All Tools.
Popular starting points in this category include GitHub Copilot, Claude Code CLI and Gemini Code Assist.
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