21 similar Code & Agents you might want to consider.
OpenAI Codex is a Code & Agents model developed by OpenAI. This page compares it with 21 other Code & Agents models in the same category — 5 open source and 0 offering a free tier.
| Model | Developer | Release date | Context window | Max output tokens | Modalities (input → output) | Open source / licence | Free tier | API available |
|---|---|---|---|---|---|---|---|---|
| OpenAI Codex | OpenAI | May 1, 2025 | — | — | — | No | — | — |
| Aider | Aider AI | — | — | — | — | Yes | — | — |
| Amazon Q Developer | Amazon | — | — | — | — | No | — | — |
| Blackbox AI | Blackbox | — | — | — | — | No | — | — |
| Bolt.new | StackBlitz | — | — | — | — | No | — | — |
| Claude Code | Anthropic | Apr 1, 2025 | — | — | — | No | — | — |
| CodiumAI | CodiumAI | — | — | — | — | No | — | — |
| Cody | Sourcegraph | — | — | — | — | No | — | — |
| Continue | Continue | — | — | — | — | Yes | — | — |
| Cursor Agent | Anysphere | Oct 1, 2025 | — | — | — | No | — | — |
| Devin | Cognition AI | Mar 1, 2025 | — | — | — | No | — | — |
| GitHub Copilot X | Microsoft / GitHub | Sep 1, 2025 | — | — | — | No | — | — |
| JetBrains AI Assistant | JetBrains | — | — | — | — | No | — | — |
| Lovable | Lovable | — | — | — | — | No | — | — |
| Mentat | AbanteAI | — | — | — | — | Yes | — | — |
| Pieces for Developers | Pieces | — | — | — | — | No | — | — |
| Replit Agent | Replit | Sep 1, 2025 | — | — | — | No | — | — |
| SWE-Agent | Princeton NLP | — | — | — | — | Yes | — | — |
| Sweep AI | Sweep | — | — | — | — | Yes | — | — |
| Tabnine | Tabnine | — | — | — | — | No | — | — |
| Windsurf | Codeium | Oct 1, 2025 | — | — | — | No | — | — |
| v0 by Vercel | Vercel | — | — | — | — | No | — | — |
Aider AI
Open-source AI pair programming tool that works in the terminal, editing code in your local git repo using GPT-4 and Claude models.
Amazon
AI-powered development assistant from AWS that helps with coding, debugging, testing, and transforming workloads across the software development lifecycle.
Blackbox
AI-powered code generation and search tool that converts natural language to code and helps developers find relevant code snippets across the web.
StackBlitz
AI-powered full-stack web development platform that generates, runs, and deploys applications directly in the browser with natural language prompts.
Anthropic
Terminal-based coding agent powered by Claude that understands entire codebases and makes multi-file changes.
CodiumAI
AI tool specialized in generating meaningful test suites for code, analyzing code behavior and suggesting edge cases developers might miss.
Sourcegraph
AI coding assistant with deep codebase context powered by Sourcegraph code intelligence, providing accurate answers about your entire codebase.
Continue
Open-source AI code assistant IDE extension that connects to any LLM for autocomplete, chat, and inline editing directly in VS Code and JetBrains.
Anysphere
AI-powered code editor that understands your codebase and assists with writing, editing, and debugging code.
Cognition AI
First autonomous AI software engineer agent capable of planning, coding, and debugging entire projects.
Microsoft / GitHub
Microsoft's AI pair programmer with chat, pull request summaries, and multi-file editing capabilities.
JetBrains
AI coding assistant integrated into JetBrains IDEs providing context-aware code generation, explanations, refactoring, and commit message generation.
Lovable
AI software engineer that builds production-ready web applications from natural language descriptions, with integrated backend, auth, and deployment.
AbanteAI
Open-source AI coding assistant that coordinates edits across multiple files in your codebase, understanding project structure and dependencies.
Pieces
AI-powered developer productivity tool that captures, enriches, and reuses code snippets with contextual metadata across your workflow.
Replit
Autonomous coding agent that can build entire applications from natural language descriptions.
Princeton NLP
Open-source autonomous software engineering agent that can independently resolve GitHub issues by browsing repositories, editing files, and running tests.
Sweep
AI-powered junior developer that autonomously handles bug fixes and small features by reading your codebase, planning changes, and creating pull requests.
Tabnine
AI code assistant focused on enterprise privacy and security, offering code completions trained on permissively licensed code with on-premise deployment options.
Codeium
AI code editor combining copilot and agent capabilities for seamless software development workflow.
Vercel
AI-powered UI generation tool that creates React components and full interfaces from text prompts and screenshots using shadcn/ui and Tailwind CSS.