AI coding assistants · #6 of 28 · ↑ Aider · ↓ Cline
OpenAI Codex
21new
OpenAI Codex scores 21 out of 100 overall, named in 22 of 70 answers across AI assistants. ChatGPT rates it highest at 37, Claude at 30, Perplexity at 8, and Gemini doesn't name it at all, scoring 0. It shows up most for whole-codebase coding agents (3 of 4 answers) and terminal-based coding assistants, where it's named in all 3 answers asked. It also gets mentions for writing tests, top assistants in 2026, and value for money. It's never named for local/privacy use, beginners, pull request review, free tools, or VS Code specifically.
Who's talking about you
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 37 | 55% of answers | #4.2 |
| Claude | 30 | 45% of answers | #4.3 |
| Gemini | 0 | 0% of answers | |
| Perplexity | 8 | 10% of answers | #3.0 |
Questions you win
| question | named in | best spot |
|---|---|---|
| What's the best AI coding assistant that works in the terminal? | 3 of 3 | #2 |
| What are the best AI coding agents that can work across a whole codebase? | 3 of 4 | #2 |
| Which AI coding tool is best for writing tests? | 2 of 3 | #3 |
| What are the best AI coding assistants? | 2 of 4 | #1 |
| What are the top AI coding assistants in 2026? | 2 of 4 | #2 |
| What's the best AI coding assistant for a solo developer building a SaaS? | 2 of 4 | #3 |
| Which AI coding assistant is best for professional developers? | 2 of 4 | #4 |
| Which AI coding assistant gives the best value for the money? | 2 of 4 | #11 |
| Which AI coding assistant is best for large codebases? | 1 of 3 | #5 |
| What's the best AI coding assistant for building mobile apps? | 1 of 3 | #5 |
| Which AI coding tool writes the most reliable code? | 1 of 4 | #1 |
| What's the best AI code editor right now? | 1 of 4 | #5 |
Questions you lose
| question | who got named instead |
|---|---|
| What are the best free AI coding assistants? | GitHub Copilot, Windsurf, Cursor |
| What's the best AI coding assistant for beginners learning to code? | GitHub Copilot |
| What's the best AI coding assistant for Python? | Cursor, GitHub Copilot, Claude Code |
| What's the best AI tool for writing and fixing React and Next.js code? | Cursor, GitHub Copilot, Claude Code |
| What's the best AI tool to review pull requests automatically? | CodeRabbit, Greptile, GitHub Copilot |
| What's the best AI coding assistant I can run locally for privacy? | Continue, Aider |
| What's the best open-source AI coding assistant? | Aider, Cline, OpenCode |
| What's the best AI coding assistant for VS Code? | GitHub Copilot, Cursor, Cline |
In their words
- ChatGPT“Cursor’s agent can make multi-file changes, refactor, fix bugs, write tests, and run shell commands, while Expo’s current AI workflow explicitly supports agents like Cursor, Claude Code, and Codex for building Android/iOS/web apps and testing live on your phone.”
- Claude“Agentic tools that can run your test suite — Claude Code, Cursor (agent mode), Codex CLI, Cline, Aider.”
- Perplexity“Codex CLI: a strong option for fast terminal work and OpenAI-based workflows.”
Closest rivals
- OpenAI Codex vs Aider22
- OpenAI Codex vs Cline18
- OpenAI Codex vs Windsurf25
- OpenAI Codex vs Continue16
- OpenAI Codex vs Amazon Q Developer12
All OpenAI Codex alternatives · Full AI coding assistants leaderboard · Sources