Codex by OpenAI
AI that writes code for you
Qodo (formerly CodiumAI)
Agentic AI for testing, reviewing, and writing code.
Updated February 2026
| Codex by OpenAI | Qodo (formerly CodiumAI) | |
|---|---|---|
| Rating | 5.0★ | 4.3★ |
| Reviews | 20 | 3 |
| Pros | 0 | 0 |
| FactScore™ | 66.1 | 26.1 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Codex by OpenAI — Pros
No unique pros listedBoth tools — Pros
—Only in Qodo (formerly CodiumAI) — Pros
No unique pros listedOnly in Codex by OpenAI — Cons
—Both tools — Cons
—Only in Qodo (formerly CodiumAI) — Cons
—Details
| Codex by OpenAI | Qodo (formerly CodiumAI) | |
|---|---|---|
| Categories | AI Coding Agents | AI Coding Agents, Testing and QA software, Code Review Tools |
| Platforms | Web | Web |
| Became Popular | August 10, 2021 | March 23, 2023 |
| Website | openai.com | www.qodo.ai |
Who Should Pick Which?
Choose Codex by OpenAI if...
- No unique pros listed
Choose Qodo (formerly CodiumAI) if...
- No unique pros listed
With a FactScore™ of 66.1 vs 26.1, Codex by OpenAI leads in community reception. Codex by OpenAI uniquely offers No unique pros listed, while Qodo (formerly CodiumAI) stands out for No unique pros listed.
What Users Say
Codex by OpenAI
Even with new models around, Codex remains one of the most reliable AI coding assistants—fast, structured, and still very useful.
Still the fastest way to get a working regex or a complex utility function from a single-line comment.
OpenAI Codex has become an essential part of our development workflow. With our AGENTS.md providing project context, Codex understands our monorepo architecture and coding conventions, autonomously...
Qodo (formerly CodiumAI)
Thanks @maritamar this is great and can dramatically impact PR cycle time, curious to learn more about the impact of PR-Agent
Amazing product!
I have tried this tool for JS/TS. I really like the UI,I want to like this product more, and I continue to to try to use it, with the hope that with more training, it will become truly useful and a...
Related Comparisons
Frequently Asked Questions
Which is better, Codex by OpenAI or Qodo (formerly CodiumAI)?
Based on FactScore™, Codex by OpenAI leads with a score of 66.1 vs 26.1. Codex by OpenAI has a higher rating of 5.0★ compared to 4.3★.
What are the pros of Codex by OpenAI compared to Qodo (formerly CodiumAI)?
Codex by OpenAI uniquely offers: No unique pros listed.
What are the pros of Qodo (formerly CodiumAI) compared to Codex by OpenAI?
Qodo (formerly CodiumAI) uniquely offers: No unique pros listed.
Is Codex by OpenAI better rated than Qodo (formerly CodiumAI)?
Codex by OpenAI is rated 5.0★ from 20 reviews. Qodo (formerly CodiumAI) is rated 4.3★ from 3 reviews.
What is the FactScore™ of Codex by OpenAI and Qodo (formerly CodiumAI)?
FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and Qodo (formerly CodiumAI) scores 26.1.
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