Best OpenAI Codex alternatives in 2026
OpenAI Codex is listed under Coding AI (free plan, paid from $8/month). The closest alternatives on Finder Atlas in 2026 are Claude Code, Devin Desktop (formerly Windsurf) and Google Antigravity, with 5 more below.
8tools · pricing and features checked against each vendor’s site
Quick picks
- Closest overall
- Claude Code
Paid · From $20/month
- Free option
- Devin Desktop (formerly Windsurf)
Freemium · Free plan, paid from $20/month
OpenAI Codex alternatives, compared
Coding AI
Anthropic's coding agent that edits code and runs commands from terminal, IDE or browser
- Works across terminal, VS Code, JetBrains, desktop app, web and Slack with shared settings
- Runs commands and tests and handles git commits and pull requests
From $20/month · CLI, macOS, Windows · API
Coding AI
Agent-first IDE for running local and cloud coding agents in one place
- Free plan with unlimited Tab completions and inline edits
- Full IDE that stays compatible with VS Code and Windsurf extensions
Free plan, paid from $20/month · macOS, Windows, Linux
Google Antigravity
FreemiumCoding AI
Google's agent-first platform for building software with parallel AI coding agents
- Free Individual plan with unlimited Tab completions and Command requests.
- Offers Gemini, Claude and GPT-OSS models in one tool.
Free plan, paid from $19.99/month · macOS, Windows, Linux · API
Devin
FreemiumCoding AI
Autonomous cloud software engineer that takes tickets through to tested pull requests
- Tests its work in its own virtual machine and browser and records the session
- Runs many sessions in parallel
Free plan, paid from $20/month · Web, CLI, API · API
Kiro
FreemiumCoding AI
Spec-driven agentic IDE from AWS that turns prompts into designs, tasks and code
- Spec-driven workflow produces requirements, design and task lists before code is written.
- Based on Code OSS, so VS Code settings, themes and Open VSX extensions carry over.
Free plan, paid from $20/user/mo · macOS, Windows, Linux
GitHub Copilot
FreemiumCoding AI
AI coding assistant for code completion, chat and cloud agents across IDEs, terminal and GitHub
- Works in VS Code, Visual Studio, JetBrains, Xcode, Neovim and Eclipse, plus the terminal and GitHub.com
- Free plan with 2,000 inline suggestions and agent mode, and Pro at $10 per month
Free plan, paid from $10/month · Web, macOS, VS Code Extension
Factory
PaidCoding AI
Agent-native software development platform where Droids handle full engineering tasks end to end
- Covers the full delivery loop: implementation, review, testing, incident response and documentation.
- Model independence, with a router and bring-your-own-key support for custom models.
From $20/month · Web, macOS, Windows · API
Amp
FreemiumCoding AI
Coding agent that runs in cloud orbs and keeps working after you close your laptop
- Per-thread cloud orbs let agents keep running unattended without worktree or port conflicts.
- Free Hobby tier includes all product features, with bring-your-own-key and own-runner options.
Free plan, paid from $20/month · Web, macOS, Linux · API
Frequently asked questions
What is the closest alternative to OpenAI Codex?
Claude Code. Anthropic's coding agent that edits code and runs commands from terminal, IDE or browser. It is paid (from $20/month).
Is there a free alternative to OpenAI Codex?
Yes. Devin Desktop (formerly Windsurf) is freemium (free plan, paid from $20/month). Agent-first IDE for running local and cloud coding agents in one place
Which OpenAI Codex alternatives have an API?
Claude Code, Google Antigravity, Devin, Factory and Amp offer an API.
How are these alternatives chosen?
They share the tool's category and overlap in audiences, tags, pricing model, platforms and API availability. Some are picked by Finder Atlas editors, who add a one-line reason. Ratings come only from reviews on Finder Atlas.
Looking at OpenAI Codex itself? See its pricing, features and reviews, or browse all Coding AI tools.