Codex by OpenAI

AI that writes code for you

★★★★★ 5.0/5
FactScore™ 66.1
VS

TabNine

Uses deep learning to help you write code faster.

FactScore™ 0

Updated February 2026

Codex by OpenAI TabNine
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.

👑
66.1
Codex by OpenAI FactScore™
★ Codex by OpenAI wins on FactScore™
TabNine FactScore™

Pros & Cons

Only in Codex by OpenAI — Pros

No unique pros listed

Both tools — Pros

Only in TabNine — Pros

No unique pros listed

Only in Codex by OpenAI — Cons

Both tools — Cons

Only in TabNine — Cons

Details

Codex by OpenAI TabNine
Categories AI Coding Agents AI Coding Agents, Code Review Tools
Platforms Web Web
Became Popular August 10, 2021 November 1, 2019
Website openai.com tabnine.com

Who Should Pick Which?

Choose Codex by OpenAI if...

  • No unique pros listed

Choose TabNine 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 TabNine stands out for No unique pros listed.

3

What Users Say

Codex by OpenAI

J
JJ Sep 30, 2025
★★★★★

Even with new models around, Codex remains one of the most reliable AI coding assistants—fast, structured, and still very useful.

W
Wojciech Oct 30, 2025
★★★★★

Still the fastest way to get a working regex or a complex utility function from a single-line comment.

T
Tadashi Jan 4, 2026
★★★★★

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...

TabNine

No reviews yet

Frequently Asked Questions

Which is better, Codex by OpenAI or TabNine?

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 TabNine?

Codex by OpenAI uniquely offers: No unique pros listed.

What are the pros of TabNine compared to Codex by OpenAI?

TabNine uniquely offers: No unique pros listed.

Is Codex by OpenAI better rated than TabNine?

Codex by OpenAI is rated 5.0★ from 20 reviews. TabNine is rated N/A★ from 0 reviews.

What is the FactScore™ of Codex by OpenAI and TabNine?

FactScore™ weighs rating and review volume together. Codex by OpenAI scores 66.1 and TabNine scores 0.

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