Codex by OpenAI
AI that writes code for you
SkillReactor
AI Ready Tech Skills for Everyone
Updated February 2026
| Codex by OpenAI | SkillReactor | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 20 | 3 |
| Pros | 0 | 0 |
| FactScore™ | 66.1 | 30.1 |
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 SkillReactor — Pros
No unique pros listedOnly in Codex by OpenAI — Cons
—Both tools — Cons
—Only in SkillReactor — Cons
—Details
| Codex by OpenAI | SkillReactor | |
|---|---|---|
| Categories | AI Coding Agents | AI Coding Agents, Online learning, Code Review Tools |
| Platforms | Web | Web |
| Became Popular | August 10, 2021 | December 14, 2023 |
| Website | openai.com | www.skillreactor.io |
Who Should Pick Which?
Choose Codex by OpenAI if...
- No unique pros listed
Choose SkillReactor if...
- No unique pros listed
With a FactScore™ of 66.1 vs 30.1, Codex by OpenAI leads in community reception. Codex by OpenAI uniquely offers No unique pros listed, while SkillReactor 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...
SkillReactor
A great initiative indeed!
I've tried the SkillReactor platform, and it's fantastic. They offer dedicated sections for courses and projects, a built-in IDE, and, most importantly, a portfolio builder. It's impressive how the...
A robust platform that equips software engineers with the right hands on practice to build confidence as well as a portfolio of work that shows their competence.
Related Comparisons
Frequently Asked Questions
Which is better, Codex by OpenAI or SkillReactor?
Based on FactScore™, Codex by OpenAI leads with a score of 66.1 vs 30.1. Codex by OpenAI has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Codex by OpenAI compared to SkillReactor?
Codex by OpenAI uniquely offers: No unique pros listed.
What are the pros of SkillReactor compared to Codex by OpenAI?
SkillReactor uniquely offers: No unique pros listed.
Is Codex by OpenAI better rated than SkillReactor?
Codex by OpenAI is rated 5.0★ from 20 reviews. SkillReactor is rated 5.0★ from 3 reviews.
What is the FactScore™ of Codex by OpenAI and SkillReactor?
FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and SkillReactor scores 30.1.
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