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

Both are popular terminal coding agents. Here is how OpenAI Codex and Jules 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 ↗

Jules

Google's asynchronous coding agent that works on your GitHub repos

7.6 /10

Pricing: Freemium

Pros

Free tier with daily tasks
Plans first, then opens a PR
Works while you do other things

Cons

GitHub only
Less configurable than CLI agents

Visit Jules ↗

OpenAI Codex vs Jules at a glance

	OpenAI Codex	Jules
Editor score	9.1 / 10	7.6 / 10
Pricing model	Freemium	Freemium
Starting price	$8/mo	Free
Reader upvotes	1	0
Best for	terminal, agent, openai	cloud agent, google
Agent Skills support	Yes	No
Subagents support	Yes	No
MCP support	Yes	No
AGENTS.md support	Yes	Yes
Plugins support	No	No
Hooks support	No	No
Rules support	No	No
Agent skills in this directory	58	1
Subagents & agents in this directory	43	3
MCP servers in this directory	74	0

Our pick

OpenAI Codex edges it with a score of 9.1 versus 7.6. 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 Jules instead if you need: free tier with daily tasks, plans first, then opens a pr.