A decision for a beginner, not a spec sheet. Scores are our weights. Prices are the public plans, and anything marked verify on the tool page should be re-checked before you pay.
Pick Jules if you want bug fixes, version bumps, and small features on a repo you already have.
Pick OpenAI Codex if you already pay for ChatGPT and want the coding agent in that allowance.
An async agent that takes a GitHub task and opens a pull request.
Cheapest verified paid plan: Google AI Pro (Jules in Pro) · $19.99/mo
A coding agent included with ChatGPT, not a separate app subscription.
Cheapest verified paid plan: Plus · $20/mo
Web app or SaaS
Mobile app
Game
Website or landing page
Automation or script
No code
I can follow a change
I already develop
Last verified 2026-10-19
Individual
Free
Verified15 tasks per rolling 24 hours, 3 concurrent tasks, Gemini 2.5 Pro. Jules' own label for this row is evaluating the agent on real work.
Task counts are on jules.google and the usage-limits doc. Neither page prints a dollar price because this row is free.
Individual
$19.99/mo
Verified100 tasks per rolling 24 hours, 15 concurrent tasks, and higher access to the latest model. The Jules plan table says that starts with Gemini 3 Pro. A March 9, 2026 Jules changelog says Gemini 3.1 Pro replaced Gemini 3 Pro as the default for Pro users.
Jules docs say Jules in Pro is included with Google AI Pro. The $19.99 price is the Google AI Pro price on Google One, which also includes storage and other Google AI products. Google AI Plus at $4.99 is not listed by Jules as an upgrade. Google One only labels Plus Jules limits as Limited, so it is not a paid Jules row.
Individual
$99.99/mo
VerifiedGoogle One labels Jules task limits, concurrent limits, and latest-model access as Higher than Pro. Jules' plan table publishes one Ultra row of 300 tasks per rolling 24 hours and 60 concurrent tasks, and does not say whether that row is this 5x plan, the 20x plan, or both.
The $99.99 price is Google AI Ultra 5x on Google One. The task number is left off this card so a single Ultra row is not pasted onto both prices.
Individual
$199.99/mo
VerifiedGoogle One labels Jules task limits, concurrent limits, and latest-model access as Highest. The same Jules Ultra row of 300 tasks and 60 concurrent tasks is not assigned to this price either.
The $199.99 price is Google AI Ultra 20x on Google One. Jules docs describe one Ultra benefit and one set of task numbers.
Last verified 2026-10-19
Individual
Free
VerifiedLimited trial access to Codex and limited access to GPT-5.6. Codex pricing docs also list GPT-6 Luna at Standard speed in the desktop app, subject to rollout. No published prompt count.
Confirmed on the Codex pricing page as a limited trial. GPT-6 Luna on Free is listed as subject to rollout, so it is not treated as a guarantee.
Individual
Confirm on chatgpt.com/pricing
VerifyLimited Codex, above Free. Codex pricing docs at learn.chatgpt.com/docs/pricing list Go at $8/mo. chatgpt.com/pricing still did not print a dollar amount on 2026-10-19.
Left out of budget matching. The $8 figure is on a Codex pricing doc, and the live ChatGPT pricing page still does not show it.
Individual
$20/mo
VerifiedExpanded Codex for a few focused sessions a week. Codex app on macOS and Windows. Local and cloud usage share the allowance. Weekly limits may apply. GPT-6 Astra access is limited, with credits for more.
Plus is $20/mo on OpenAI's help center. Annual billing is not offered.
Individual
$100/mo
VerifiedHigher Codex allowance for longer daily sessions. GPT-6 Astra is included in the allowance. Ultrafast is not included.
From OpenAI's Pro tiers help article.
Individual
$200/mo
VerifiedMore included usage than Pro 100. Ultrafast is not included. New subscriptions may have a lower allowance than older Pro 200 accounts.
OpenAI says the monthly price remains $200.
Individual
$500/mo
VerifiedHighest included Pro usage. Ultrafast for GPT-6 Astra and GPT-6.1 Sol is included and draws the included allowance at 8× the Standard rate for that model.
Ultrafast is only on this Pro tier. The 8× rate is from OpenAI's Pro tiers help article.
Task limits are a rolling 24 hours, not midnight. Concurrent-task caps apply at the same time. Family-plan members each have their own limits. They are not pooled.
When the new-task button turns off, keep reviewing tasks that are already running. History stays available.
Plan allowance, with weekly limits that may also apply. Local messages and cloud chats share it. OpenAI does not publish one universal reset clock.
Switch to a lower-cost model. OpenAI says that stretches the same allowance.
Jules's cheapest paid plan the ranking counts is Google AI Pro (Jules in Pro) at $19.99/mo. OpenAI Codex's cheapest paid plan the ranking counts is Plus at $20/mo.
Jules is for bug fixes, version bumps, and small features on a repo you already have, handing off a task and reviewing the pull request later, and a free daily allowance with a published task count.
OpenAI Codex is for developers who already pay for ChatGPT and want the coding agent in that allowance, web apps and automations with local and cloud tasks, and a few focused coding sessions a week on Plus.
Jules scores 2 out of 5 for someone who does not want to read code. OpenAI Codex scores 1 out of 5. Jules has the higher no-code score. You need a GitHub repo and you need to read the pull request. This is not a form that publishes an app. You are still in a coding agent. This is a poor pick if you never want to see a file.
Jules: 15 tasks per rolling 24 hours, 3 concurrent, on Gemini 2.5 Pro. Jules describes this plan as evaluating the agent on real work. It does not host the project. OpenAI Codex: Free includes a limited Codex trial. OpenAI does not publish a fixed prompt count. It is enough to see the product, not to build through the month.