Codex by OpenAI
AI that writes code for you
Tonkotsu
Manage a team of coding agents from a doc
Updated February 2026
| Codex by OpenAI | Tonkotsu | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 20 | 1 |
| Pros | 0 | 2 |
| FactScore™ | 66.1 | 15.1 |
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 Tonkotsu — Pros
Clean ux Fast performanceOnly in Codex by OpenAI — Cons
—Both tools — Cons
—Only in Tonkotsu — Cons
—Details
| Codex by OpenAI | Tonkotsu | |
|---|---|---|
| Categories | AI Coding Agents | AI Coding Agents, AI Agent Automation |
| Platforms | Web | Web |
| Became Popular | August 10, 2021 | January 23, 2026 |
| Website | openai.com | tonkotsu.ai |
Who Should Pick Which?
Choose Codex by OpenAI if...
- No unique pros listed
Choose Tonkotsu if...
- Clean ux
- Fast performance
With a FactScore™ of 66.1 vs 15.1, Codex by OpenAI leads in community reception. Codex by OpenAI uniquely offers No unique pros listed, while Tonkotsu stands out for Clean ux and Fast performance.
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...
Tonkotsu
I choose Tonkotsu over Google Antigravity for two key reasons:The team are down to earth and open to feedback without the burden of a large orgThe product is joyful, has soul, and it is technically...
Related Comparisons
Frequently Asked Questions
Which is better, Codex by OpenAI or Tonkotsu?
Based on FactScore™, Codex by OpenAI leads with a score of 66.1 vs 15.1. Codex by OpenAI has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Codex by OpenAI compared to Tonkotsu?
Codex by OpenAI uniquely offers: No unique pros listed.
What are the pros of Tonkotsu compared to Codex by OpenAI?
Tonkotsu uniquely offers: Clean ux, Fast performance.
Is Codex by OpenAI better rated than Tonkotsu?
Codex by OpenAI is rated 5.0★ from 20 reviews. Tonkotsu is rated 5.0★ from 1 reviews.
What is the FactScore™ of Codex by OpenAI and Tonkotsu?
FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and Tonkotsu scores 15.1.
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