Codex by OpenAI
AI that writes code for you
Kiro
A new agentic IDE to take you from prototype to production
Updated February 2026
| Codex by OpenAI | Kiro | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 20 | 5 |
| Pros | 0 | 0 |
| FactScore™ | 66.1 | 38.9 |
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 Kiro — Pros
No unique pros listedOnly in Codex by OpenAI — Cons
—Both tools — Cons
—Only in Kiro — Cons
—Details
| Codex by OpenAI | Kiro | |
|---|---|---|
| Categories | AI Coding Agents | AI Coding Agents, AI Code Editors |
| Platforms | Web | Web |
| Became Popular | August 10, 2021 | July 15, 2025 |
| Website | openai.com | kiro.dev |
Who Should Pick Which?
Choose Codex by OpenAI if...
- No unique pros listed
Choose Kiro if...
- No unique pros listed
With a FactScore™ of 66.1 vs 38.9, Codex by OpenAI leads in community reception. Codex by OpenAI uniquely offers No unique pros listed, while Kiro 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...
Kiro
Helped me fine-tune code, tailor specific app components, and accelerate iteration across every feature.
I can never image a day where someone can seamlessly manage the cloud serves for me with the deployment of our codebase.
Easy to use and Humanized Coding Style
Related Comparisons
Frequently Asked Questions
Which is better, Codex by OpenAI or Kiro?
Based on FactScore™, Codex by OpenAI leads with a score of 66.1 vs 38.9. Codex by OpenAI has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Codex by OpenAI compared to Kiro?
Codex by OpenAI uniquely offers: No unique pros listed.
What are the pros of Kiro compared to Codex by OpenAI?
Kiro uniquely offers: No unique pros listed.
Is Codex by OpenAI better rated than Kiro?
Codex by OpenAI is rated 5.0★ from 20 reviews. Kiro is rated 5.0★ from 5 reviews.
What is the FactScore™ of Codex by OpenAI and Kiro?
FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and Kiro scores 38.9.
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