Codex by OpenAI
AI that writes code for you
Lune AI
Expert LLMs trained per-topic that outperform top AI models.
FactScore™ 0Updated February 2026
| Codex by OpenAI | Lune AI | |
|---|---|---|
| Rating | 5.0★ | N/A |
| Reviews | 20 | 0 |
| Pros | 0 | 0 |
| FactScore™ | 66.1 | 0 |
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 Lune AI — Pros
No unique pros listedOnly in Codex by OpenAI — Cons
—Both tools — Cons
—Only in Lune AI — Cons
—Details
| Codex by OpenAI | Lune AI | |
|---|---|---|
| Categories | AI Coding Agents | AI Coding Agents, LLMs, Unified API |
| Platforms | Web | Web |
| Became Popular | August 10, 2021 | November 25, 2024 |
| Website | openai.com | lune.dev |
Who Should Pick Which?
Choose Codex by OpenAI if...
- No unique pros listed
Choose Lune AI if...
- No unique pros listed
With a FactScore™ of 66.1 vs 0, Codex by OpenAI leads in community reception. Codex by OpenAI uniquely offers No unique pros listed, while Lune AI 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...
Lune AI
No reviews yet
Related Comparisons
Frequently Asked Questions
Which is better, Codex by OpenAI or Lune AI?
Based on FactScore™, Codex by OpenAI leads with a score of 66.1 vs 0. Codex by OpenAI has a higher rating of 5.0★ compared to N/A★.
What are the pros of Codex by OpenAI compared to Lune AI?
Codex by OpenAI uniquely offers: No unique pros listed.
What are the pros of Lune AI compared to Codex by OpenAI?
Lune AI uniquely offers: No unique pros listed.
Is Codex by OpenAI better rated than Lune AI?
Codex by OpenAI is rated 5.0★ from 20 reviews. Lune AI is rated N/A★ from 0 reviews.
What is the FactScore™ of Codex by OpenAI and Lune AI?
FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and Lune AI scores 0.
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