Will ChatGPT and Codex share one usage limit in December?

What did the ChatGPT checkout page say?

On Oct 29, 2026 at 6:04 PM ET, AI product researcher Tibor Blaho posted a screenshot on X of a new checkout disclaimer: "Starting in December, plan usage will have a shared limit across all of ChatGPT and Codex." The post passed 550,000 views within a day.

According to a Linux.do forum user, as summarized by Prompt Blueprints, the line sits in the subscription terms on the Plus, Pro and Business checkout pages, and a feature flag that is off by default controls who sees it. If that's right, it explains why most people opening checkout today don't see it. This part is reported, not confirmed.

The key word is "all." Codex already shares a pool with ChatGPT Work. The new text would pull regular Chat into that same pool.

What has OpenAI said?

Nothing about December. No OpenAI help article or pricing page mentioned a December change when we checked on Oct 30, 2026 at 11 AM ET. The closest thing is a post from OpenAI's Tibo (@thsottiaux). On Oct 28 at 7:35 PM ET, quoting a post that said "ChatGPT is unifying Chat and Work," he wrote:

"Team is working on this but it's not rolling out just yet, sorry for any confusion. Plan is to bring together best of both Chat / Work capabilities together at some point this year, but we're going to proceed carefully here and take our time."

That came a day before the checkout text surfaced, and it doesn't mention limits. Blaho thinks the two are linked: "This is likely related to the ongoing work to combine Chat + Work." That's a reasonable reading, but it's his, not OpenAI's.

How ChatGPT and Codex limits work today

OpenAI runs two separate meters right now, per its Codex help article and Codex pricing page:

• Work and Codex pool. Codex, ChatGPT Work, ChatGPT for Excel and Workspace Agents draw from one allowance and one credit balance. A long Codex session leaves less for Work, and the other way around.
• Chat limits. Regular chat has its own message limits that vary by plan. On Pro, OpenAI says the weekly GPT-6 Pro message limits "are separate from your Work and Codex allowance."

On Plus ($20 a month), OpenAI estimates these local Codex messages per 5-hour window, with weekly limits on top:

The Pro plans have no 5-hour limit in Work and Codex for now. On Oct 29, OpenAI doubled the Work and Codex allowance on Pro 100 and Pro 500 and lifted every Pro 200 account to the higher allowance. Plus didn't change. See Codex limits explained and the AI plan changelog for the details.

What a shared ChatGPT and Codex limit would mean

OpenAI hasn't described the design, so this section is our reading of the one sentence we have.

• Heavy Codex days could cost you chat. If you burn most of your allowance on a coding session, ordinary questions in ChatGPT would come out of what's left.
• Light coders might gain. If you barely use Codex, one pool could leave more room for chat than a fixed chat limit does. That depends on sizes OpenAI hasn't published.
• One place to check. A single meter in Settings, then Usage would replace the split between chat limits and the Work and Codex allowance.

Claude already works this way. Anthropic's Pro and Max plans use one pool for Claude chat and Claude Code, which is why a big Claude Code day can lock you out of chat until the 5-hour window resets. Our Claude limits guide and Claude reset tracker show how that plays out.

What we know and what we don't

We'll update this page the moment OpenAI says more, and log any confirmed change on the ChatGPT plan tracker.

Should you change plans now?

No. Nothing changes before December, and there are no numbers to compare yet. Two things are worth doing in the meantime:

• Note your normal week. Check Settings, then Usage in ChatGPT, or Usage & Billing in Codex, and write down how much of the weekly allowance a typical week uses. If a shared limit lands, you'll know right away whether you're worse off. Our guide to checking AI usage limits covers every app.
• Know your fallbacks. Credits keep working for Codex and Work after the included allowance runs out. See what Codex credits cost, or compare against paying per token with the Codex plan vs API calculator.

If you mostly chat and rarely code, this probably won't matter much. If you live in Codex on Plus, it could, and whether ChatGPT Pro is worth it is the question to revisit once OpenAI publishes the details.