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Codex Alternatives
Similar projects and alternatives to codex
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SurveyJS
JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.
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zed
Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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llama-cookbook
Welcome to the Llama Cookbook! This is your go to guide for Building with Llama: Getting started with Inference, Fine-Tuning, RAG. We also show you how to solve end to end problems using Llama model family and using them on various provider services
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ChatDev
Create Customized Software using Natural Language Idea (through LLM-powered Multi-Agent Collaboration)
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CodeSage
CodeSage uses AI to generate detailed comments and documentation for codebase, making it easier to understand and maintain. With support for Golang programming languages and an in-memory vector database, It ensures fast and efficient codebase indexing and search functionality.
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cursor-agent
A Python-based AI agent that replicates Cursor's coding assistant capabilities, enabling function calling, code generation, and intelligent coding assistance with Claude, OpenAI, and locally hosted Ollama models.
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llm-leaderboard
A comprehensive set of LLM benchmark scores and provider prices. (by JonathanChavezTamales)
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vibemode
Pack your repo into an AI-friendly format and apply AI suggested changes back with ease, all from your terminal.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better codex alternative or higher similarity.
codex discussion
codex reviews and mentions
Posts with mentions or reviews of codex.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-05-19.
- Jules: An Asynchronous Coding Agent
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Claude Code SDK – Anthropic
OpenAI codex is probably the closest to what you're talking about, its open source and you can use models from any provider. It's not as good as claude code right now but I bet it wont take long for them to catch up.
https://github.com/openai/codex/tree/main
- Any good, apply-patch implementation by Open AI?
- Void: Open-Source Cursor Alternative
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What's Happening in Developer Tools? (OpenAI Just Bought Windsurf for $3B)
OpenAI just raised $40B at a $300B valuation, meaning they acquired Windsurf for 1% of their current value. But at the same time, OpenAI reportedly lost $5B in 2024, and their own coding agent, codex, has had middling success. Clearly they were feeling pressure to "do something." It has been widely reported that they were interested in acquiring Cursor, the leading startup AI-powered coding editor, yet the price was too high. Cursor was founded in 2022 and just raised a $900m Series C round at a $9B valuation on the back of doubling its ARR from $100m to $200m over the last two months. Clearly, something is afoot!
- OpenAI agrees to buy Windsurf for about $3B
- Codex: Support multiple providers via Responses-Completion transformation
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Codex CLI – Adding Azure OpenAI to Codex by using… Codex!
Originally “Codex” referred to an early OpenAI code‑generation model, but the name has now been repurposed for an open‑source CLI companion for software engineers. https://github.com/openai/codex
- Show HN: Plandex v2 – open-source AI coding agent for large projects and tasks
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OpenAI Codex
Not sure why they used React for a CLI. The code in the repo feels like it was written by an LLM—too many inline comments. Interestingly, their agent's system prompt mentions removing inline comments https://github.com/openai/codex/blob/main/codex-cli/src/util....
> - Remove all inline comments you added as much as possible, even if they look normal. Check using \`git diff\`. Inline comments must be generally avoided, unless active maintainers of the repo, after long careful study of the code and the issue, will still misinterpret the code without the comments.
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A note from our sponsor - SaaSHub
www.saashub.com | 23 May 2025
Stats
Basic codex repo stats
16
26,532
9.8
3 days ago
openai/codex is an open source project licensed under Apache License 2.0 which is an OSI approved license.
The primary programming language of codex is TypeScript.
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