OpenAI Codex vs Devin (2026): Which Vibe Coding App Is Better?

Both are popular terminal coding agents. Here is how OpenAI Codex and Devin stack up on price, strengths and weaknesses, and which one we would pick.

OpenAI Codex

OpenAI's coding agent for the terminal, IDE and cloud, included with ChatGPT plans

9.1 /10

Pricing: Free plan, paid from $8/mo

Pros

Included with ChatGPT plans you may already pay for
Open-source CLI plus cloud tasks that open pull requests
Reads AGENTS.md, the cross-tool instructions file

Cons

Fewer extension points than Claude Code (no plugin marketplace)
Usage limits depend on your ChatGPT plan

Visit OpenAI Codex ↗

Devin

Autonomous AI software engineer from Cognition

7.9 /10

Pricing: Free plan, paid from $20/mo

Pros

Fully autonomous: ticket in, pull request out
Integrates with Slack, Linear and Jira
Good at well-scoped chores and migrations

Cons

Needs clear tickets; weaker on vague tasks
Heavy use needs the higher-priced plans

Visit Devin ↗

OpenAI Codex vs Devin at a glance

	OpenAI Codex	Devin
Editor score	9.1 / 10	7.9 / 10
Pricing model	Freemium	Freemium
Starting price	$8/mo	$20/mo
Reader upvotes	1	0
Best for	terminal, agent, openai	cloud agent, autonomous
Agent Skills support	Yes	Yes
Subagents support	Yes	No
MCP support	Yes	Yes
AGENTS.md support	Yes	Yes
Plugins support	No	No
Hooks support	No	No
Rules support	No	No
Agent skills in this directory	58	47
Subagents & agents in this directory	43	4
MCP servers in this directory	74	73

Our pick

OpenAI Codex edges it with a score of 9.1 versus 7.9. OpenAI Codex is the better fit if you value: included with chatgpt plans you may already pay for, open-source cli plus cloud tasks that open pull requests. Choose Devin instead if you need: fully autonomous: ticket in, pull request out, integrates with slack, linear and jira.