OpenAI Codex App Alternatives & Competitors
Explore 20 powerful alternatives to OpenAI Codex App. Compare features, pricing, and capabilities to find the perfect developer ides & agents tool for your needs.
Looking for the best OpenAI Codex App alternatives? Our top picks include Cursor, Claude Code and Windsurf (formerly Codeium). These top OpenAI Codex App alternatives offer a range of features, pricing, and capabilities to suit your needs.
Best OpenAI Codex App Alternatives
Looking for OpenAI Codex App alternatives? Our best OpenAI Codex App alternatives include Cursor, Claude Code and Windsurf (formerly Codeium). 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
Claude Code
Developer IDEs & Agents
Anthropic's agentic coding interface that lets users describe apps or tasks in natural language and have Claude autonomously plan, write, edit, debug, and iterate code. Available as web app (claude.ai/code) with GitHub integration, and as Desktop app with local file access, visual diffs, and Cowork background agents.
Key Features:
- Natural language prompt → plan → code generation & editing
- Visual diffs and session management (Desktop)
- Cowork background autonomous agent (Desktop)
- Cloud sandbox execution with GitHub repo cloning (Web)
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
Claude Code CLI
Developer IDEs & Agents
Anthropic's official terminal-based agentic coding tool that deeply understands your local codebase, autonomously edits files, runs terminal commands, handles git workflows, and iterates via natural language prompts. Designed for professional developers who live in the terminal.
Key Features:
- Direct local file read/write/edit across entire codebase
- Execute terminal commands & tests autonomously
- Git-aware workflows (commit, branch, PR)
- Ralph Wiggum loop support for persistent autonomous iteration
OpenAI Codex CLI
Developer IDEs & Agents
The official command-line vibe coding tool from OpenAI. Edits local files, understands your repo, and runs shell commands with your permission. Like Aider, but built by OpenAI.
Key Features:
- Zero-config 'npm install' setup
- Edits local files directly
- Interactive 'vibe' terminal UI
- Safe 'Suggest' vs 'Auto-Edit' modes
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)
Kiro
Developer IDEs & Agents
Agentic AI-powered IDE by AWS that turns natural language into structured requirements, designs, and task lists so teams can go from prototype to production with less ambiguity.
Key Features:
- Spec-driven development (requirements → design → tasks)
- Autonomous agents and Autopilot mode for complex work
- Agent hooks to automate tasks like docs and tests
- Multimodal chat for prompts + images/UI
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
Other Tools to Consider
These are popular mainstream tools (ranked by votes) that are often considered alongside OpenAI Codex App.
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
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
Prompt-first platform to build and iterate web apps through chat, producing real code as you go. Targets non-developers and developers who want speed for prototypes, internal tools, MVPs, and small production apps. Uses credit-based pricing with free and paid plans.
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 App alternatives? Start with Cursor, Claude Code and Windsurf (formerly Codeium), then compare the rest to find the right fit.