Claude Code vs OpenAI Codex
as AI assistants see them, week of 2026-10-12
Claude Code leads this matchup, scoring 43 overall versus 21 for OpenAI Codex, and turning up in 40 of 70 answers compared to Codex's 22. Head to head, Claude Code was named more often in 13 questions, with 7 ties and zero questions where Codex came out ahead. Claude Code sweeps "What are the top AI coding assistants in 2026?" at 4 of 4 answers, while Codex tops out at 3 of 3 for "What's the best AI coding assistant that works in the terminal?". Both are shut out entirely on beginner-friendly and free-tool questions.
Head to head
| metric | Claude Code | OpenAI Codex |
|---|---|---|
| score | 46 | 22 |
| questions won | 19 | 18 |
By assistant
Claude Code
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 57 | 70% of answers | #1.6 |
| Claude | 56 | 70% of answers | #2.4 |
| Gemini | 3 | 0% of answers | |
| Perplexity | 48 | 58% of answers | #2.2 |
OpenAI Codex
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 39 | 55% of answers | #3.5 |
| Claude | 29 | 40% of answers | #4.4 |
| Gemini | 0 | 0% of answers | |
| Perplexity | 12 | 21% of answers | #3.0 |
Where they differ
Only Claude Code gets named for
- What's the best AI coding assistant for Python?
- What's the best AI coding assistant for VS Code?
- What's the best AI coding assistant for building mobile apps?
Only OpenAI Codex gets named for
- What are the best alternatives to Claude Code?
- What's the best open-source AI coding assistant?
More comparisons
- Claude Code vs GitHub Copilot
- Claude Code vs Cursor
- Aider vs Claude Code
- Claude Code vs Windsurf
- Aider vs OpenAI Codex
- OpenAI Codex vs Windsurf
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full AI coding assistants leaderboard