OpenAI Codex CLI Alternatives & Competitors
Explore 20 powerful alternatives to OpenAI Codex CLI. Compare features, pricing, and capabilities to find the perfect developer ides & agents tool for your needs.
Looking for the best OpenAI Codex CLI alternatives? Our top picks include Cursor, Windsurf (formerly Codeium) and Google AntiGravity. These top OpenAI Codex CLI alternatives offer a range of features, pricing, and capabilities to suit your needs.
Best OpenAI Codex CLI Alternatives
Looking for OpenAI Codex CLI alternatives? Our best OpenAI Codex CLI alternatives include Cursor, Windsurf (formerly Codeium) and Google AntiGravity. Explore up to 20 alternatives below, with the best options from the same category first.
Cursor
Developer IDEs & Agents
AI-powered IDE designed to replace VS Code, built for developers. Provides autocomplete, refactoring, debugging, and can generate entire modules or projects.
Key Features:
- Full IDE with AI-native features
- Autocomplete and intelligent refactoring
- Supports full project builds
- Optimised for professional coders
Windsurf (formerly Codeium)
Developer IDEs & Agents
Windsurf (formerly Codeium) rebranded to spotlight its agentic IDE and plugin suite: Cascade handles multi-step coding, Tab/Supercomplete keeps completions fast, and the team highlights admin-grade security plus cloud, hybrid, or self-hosted deployment options.
Key Features:
- Agentic Cascade for multi-step coding with tool use
- Windsurf Tab + Supercomplete autocomplete across IDEs
- In-IDE Previews and beta App Deploys to Netlify
- Plugins for VS Code, JetBrains, Vim/Neovim, Xcode, and more
Google AntiGravity
Developer IDEs & Agents
Google's agent-first IDE with mission control, multi-agent workflows, and a built-in browser for testing complex coding tasks end-to-end.
Key Features:
- Agent-first architecture with Manager and Editor surfaces
- Multi-agent workflows that coordinate editor, terminal, and browser
- Built-in browser and artifact trail for transparent execution
- Supports Gemini 3 Pro, Claude Sonnet 4.5, and GPT-OSS models
OpenAI Codex Agent
Developer IDEs & Agents
OpenAI's autonomous software engineering agent. Lives inside ChatGPT Pro, capable of planning, executing, and debugging end-to-end coding tasks in a secure cloud sandbox.
Key Features:
- Autonomous 'o3' reasoning model
- End-to-end task execution (up to 30 mins)
- Secure cloud sandbox environment
- Direct GitHub integration (PRs & Cloning)
Warp
Developer IDEs & Agents
A modern, Rust-based terminal with AI built-in. Features intelligent command suggestions, natural language to shell translation, and collaborative tools.
Key Features:
- AI command search
- Block-based input
- Blazing fast (Rust)
- Team collaboration
Aider
Developer IDEs & Agents
Top-tier command line AI tool. Lets you pair program with LLMs (Claude 3.5, GPT-4o) directly in your git repo. Edits multiple files effectively.
Key Features:
- Runs in terminal
- Edits local files directly
- Git aware (commits changes)
- Supports many LLMs via API
Zed
Developer IDEs & Agents
The spiritual successor to Atom, built in Rust for extreme performance. Features built-in AI collaboration and supports multiple LLMs (Claude, OpenAI, etc.).
Key Features:
- Built in Rust for speed
- Multi-LLM support
- Real-time collaboration
- Minimalist design
DevStral 2
Developer IDEs & Agents
Mistral's enterprise-grade vibe coding stack that pairs Codestral models with an open-source CLI agent and self-hosted controls for regulated teams.
Key Features:
- Open-source CLI agent with reproducible runs
- Optimized for Codestral and Mistral Large reasoning
- Enterprise guardrails with audit logs and role policies
- Offline-friendly execution for regulated repos
Ralph (Ralph Wiggum loop)
Developer IDEs & Agents
A terminal-first agent loop that repeatedly runs an AI coding agent until PRD items are done, persisting state via git and lightweight artifacts.
Key Features:
- PRD-driven loop: keeps running until checklist items are completed
- Fresh agent context each iteration (reduces drift across long runs)
- Git-based memory + artifacts (e.g. progress + PRD state)
- Terminal-first workflow for devs comfortable with git and diffs
Other Tools to Consider
These are popular mainstream tools (ranked by votes) that are often considered alongside OpenAI Codex CLI.
GitHub Copilot
AI Assistants & Code Review
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.
Key Features:
- Deep GitHub and VS Code integration
- Handles large codebases
- Autocomplete and code generation
- Pull request and bug fix support
Claude Code CLI
AI Assistants & Code Review
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.
Key Features:
- Terminal-native AI assistance
- Direct Claude AI integration
- Code analysis and review
- Scriptable and automatable
Replit
Cloud Platforms & Prototyping
The complete browser-based development environment. Features Replit AI (Ghostwriter) for code generation, explanation, and autonomous agent capabilities. Zero setup required.
Key Features:
- Browser IDE
- Built-in deployment
- Collaboration
- Replit AI
v0
Vibe / No-Code Builders
AI-powered design-to-code tool from Vercel. Focuses on generating beautiful UIs and frontend components. Works with Figma imports and allows element-level editing. Best for UI-first web projects.
Key Features:
- Beautiful UI generation
- Integrates with Figma
- UI-first design flow
- Element-level editing
Bolt.new
Cloud Platforms & Prototyping
Part of StackBlitz ecosystem. AI-driven full-stack builder with Supabase integration. Raised $105M in funding. Works for coders, nocoders, and marketers to spin up web apps quickly.
Key Features:
- Out-of-the-box Supabase integration
- Full-stack app creation
- Instant hosting and deployment
- Backed by StackBlitz ($105M raised)
Lovable
Vibe / No-Code Builders
AI-powered web app builder that feels like magic. Describes itself as 'GPT-4 for apps'. Generates full-stack React/Node/Supabase apps with beautiful UIs from natural language.
Key Features:
- No-code full-stack generation
- Beautiful default UI designs
- Supabase backend integration
- One-click deployment
Blink.new
Vibe / No-Code Builders
The 'world's first vibe coding platform' that builds full-stack apps and agents from natural language prompts. Excellent for MVPs and non-technical founders.
Key Features:
- Vibe Coding: Build apps by describing the 'vibe'
- Full-Stack Generation: Database + API + UI
- Agent Building: Create autonomous tool-using agents
- Self-Correcting: Agents fix their own errors
Zhipu AI GLM Coding Plan
AI Assistants & Code Review
Z.ai's GLM Coding Plan by Zhipu AI offers dedicated GLM-4.7 model access for code generation, debugging, and refactoring. Starting at $3/month, this budget-friendly Copilot alternative integrates with Cursor, Continue.dev, and Cline via OpenAI-compatible API.
Key Features:
- GLM-4.7 model with 73.8% SWE-bench score
- Budget-friendly at $3/month starting tier
- OpenAI and Anthropic API compatibility
- 200K token context for large projects
Cody
AI Assistants & Code Review
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.
Key Features:
- Code graph context
- Enterprise workflows
- Chat and autocomplete
- Precise code search
Still evaluating OpenAI Codex CLI alternatives? Start with Cursor, Windsurf (formerly Codeium) and Google AntiGravity, then compare the rest to find the right fit.