Codex by OpenAI
AI that writes code for you
Voila
AI assistant that seamlessly blends into the way you work
Updated February 2026
| Codex by OpenAI | Voila | |
|---|---|---|
| Rating | 5.0★ | 4.2★ |
| Reviews | 20 | 5 |
| Pros | 0 | 7 |
| FactScore™ | 66.1 | 32.7 |
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 Voila — Pros
Browser extension User-friendly Desktop app Fast support Generous quotas Quick response Workflow integrationOnly in Codex by OpenAI — Cons
—Both tools — Cons
—Only in Voila — Cons
AI-generated content flagging Clunky UI Lack of prompt library Lack of tips and tricks section Prompt length limitation Slow developmentDetails
| Codex by OpenAI | Voila | |
|---|---|---|
| Categories | AI Coding Agents | AI Coding Agents, Writing assistants, Prompt Engineering Tools |
| Platforms | Web | Web |
| Became Popular | August 10, 2021 | February 10, 2023 |
| Website | openai.com | www.getvoila.ai |
Who Should Pick Which?
Choose Codex by OpenAI if...
- No unique pros listed
Choose Voila if...
- Browser extension
- User-friendly
- Desktop app
With a FactScore™ of 66.1 vs 32.7, Codex by OpenAI leads in community reception. Codex by OpenAI uniquely offers No unique pros listed, while Voila stands out for Browser extension and User-friendly.
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...
Voila
Voilà has been a game-changer for me, bringing ChatGPT's power right into my browser, simplifying tasks like drafting emails, creating content, and finding information. However, I've noticed that s...
It's very, very, very good. As in, excellent. However, the UI still feels a little "clunky" at times. I have confidence this will improve. Development seems to have slowed down a bit, but I have fa...
Interesting and will try it out, but for a few days now, all I've gotten it to say is "Prompt is too long"... Shortening the input prompt to less than 5 words doesn't help, and the "edit prompt" ca...
Related Comparisons
Frequently Asked Questions
Which is better, Codex by OpenAI or Voila?
Based on FactScore™, Codex by OpenAI leads with a score of 66.1 vs 32.7. Codex by OpenAI has a higher rating of 5.0★ compared to 4.2★.
What are the pros of Codex by OpenAI compared to Voila?
Codex by OpenAI uniquely offers: No unique pros listed.
What are the pros of Voila compared to Codex by OpenAI?
Voila uniquely offers: Browser extension, User-friendly, Desktop app, Fast support, Generous quotas.
Is Codex by OpenAI better rated than Voila?
Codex by OpenAI is rated 5.0★ from 20 reviews. Voila is rated 4.2★ from 5 reviews.
What is the FactScore™ of Codex by OpenAI and Voila?
FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and Voila scores 32.7.
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