AI tool comparison

Codex vs Devin

A data-driven comparison of Codex (AI Coding Agent) and Devin (AI Coding Agent) — features, GitHub momentum, and which tool fits your workflow.

Codex

AI Coding Agent

PrivateOpenAI

Devin

AI Coding Agent

PrivateCognition ($2B valuation)

Feature comparison

Feature
Codex
Devin
Interface
CLI-first (terminal)
Web-based (browser IDE)
Avg daily usage (Rize)
12.4 min/user/day
10.2 min/user/day
Autonomy level
Medium (code generation)
High (full task completion)
Model
GPT-5.4 variants
Proprietary
Pricing
Included with ChatGPT Pro
$500/mo
Best for
Quick code generation, CLI workflows
Full autonomous tasks, PRs

Track your AI tool usage with Rize

AI agents can handle hours of autonomous work. Rize tracks exactly how much time your team delegates to Codex, Devin, and other agents versus hands-on coding.

Frequently asked questions

What is the difference between Codex and Devin?

Codex is a AI Coding Agent while Devin is a AI Coding Agent. Key differences include: Interface (Codex: CLI-first (terminal), Devin: Web-based (browser IDE)); Avg daily usage (Rize) (Codex: 12.4 min/user/day, Devin: 10.2 min/user/day); Autonomy level (Codex: Medium (code generation), Devin: High (full task completion)).

Which is more popular, Codex or Devin?

Both tools are actively developed open-source projects. Check the live GitHub stats above for the latest popularity data.

Can Rize track time spent in Codex and Devin?

Yes. Rize automatically detects and tracks time spent in both Codex and Devin. It runs in the background and categorizes your AI tool usage by project and client — no manual timers needed.

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