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Google AI Ultra vs ChatGPT Pro: Which Top-Tier AI Plan Is Worth It for Coding?

Google AI Ultra vs ChatGPT Pro: monthly price, Antigravity and Gemini CLI quotas vs Codex limits, models and extras, so you pay for the one you use.

By Engineer Foodie Desk ✓ Sources checked Nov 4, 2026

7 min read

Google AI Ultra prices checked Nov 2, 2026 on gemini.google/subscriptions, with billing, storage and Cloud credits from the Google One plans page (Oct 29, 2026) and Antigravity limits and models from Google’s plans doc and models doc (Nov 3, 2026). ChatGPT Pro checked Oct 29, 2026 on chatgpt.com/pricing and OpenAI’s Pro help page; Codex limits Nov 1, 2026 on Codex pricing. US prices, before tax. Every source is listed at the bottom. No affiliate links on this page (how we work).

The finding first: they’re a cent apart, not the same price. Google AI Ultra starts at $99.99 a month and ChatGPT Pro starts at $100. Google’s bigger tier, Ultra 20x, is $199.99, and ChatGPT’s Pro 200 is $200. OpenAI also sells a Pro 500 at $500 a month, which Google has no answer to. All of these are monthly only.

For coding, the split is clean. ChatGPT Pro’s coding tool is Codex, and OpenAI says “Pro plans currently have no five-hour limit.” Google AI Ultra’s coding tool is Antigravity, on a quota “refreshed every five hours.” And if you came here for Gemini CLI quotas: Google stopped covering Gemini CLI on Google AI Ultra on June 18, 2026. That changes the math for a lot of people.

Google AI Ultra vs ChatGPT Pro: the short answer

  • Codex is your main tool, and the five-hour wall drives you mad: ChatGPT Pro. Start at Pro 100 ($100).
  • You want an agent IDE with Gemini and Claude models, plus Google’s bundle (storage, YouTube Premium, video credits): Google AI Ultra at $99.99.
  • You need Gemini CLI on a subscription: neither. Google’s Code Assist page (verified Oct 29, 2026): “Starting June 18, 2026, Gemini Code Assist IDE extensions stopped serving requests for the Gemini Code Assist for individuals, Google AI Pro, and Google AI Ultra tiers. This also applies to usage of Gemini CLI.”
  • You want the biggest plan money can buy: ChatGPT Pro 500 at $500. Google tops out at $199.99.

At a glance

ItemAI UltraChatGPT Pro
Monthly$99.99 / $199.99$100 / $200 / $500
BillingMonthly onlyMonthly only
Intro offerNot publishedNot published
Coding toolAntigravityCodex
5-hour windowYesNone on Codex
Weekly limitYes“May also apply”
Gemini CLINot coveredn/a
Top modelsGemini 4 Argon, Claude 5.5GPT-6 Astra, GPT-6.1 Sol
Extra usageAI creditsChatGPT credits
Storage20 TB / 30 TBNot listed

Google: Ultra “Starting at” $99.99/mo (5x Pro limits) or $199.99/mo (20x Pro), usage “refreshes every 5 hours until you reach your weekly limit. You can extend your limits by purchasing AI credits.” (gemini.google/subscriptions, verified Nov 2, 2026). “Ultra plans are billed monthly only”, 20 TB on Ultra and 30 TB on Ultra 20x (Google One plans, verified Oct 29, 2026). OpenAI: Pro 100 $100, Pro 200 $200, Pro 500 $500, monthly only (Pro help, verified Oct 29, 2026); “Pro reasoning powered by GPT-6 Astra”, GPT-6.1 Sol “Expanded” (chatgpt.com/pricing, verified Oct 29, 2026); “Pro plans currently have no five-hour limit”, “Weekly limits may also apply” (Codex pricing, verified Nov 1, 2026). Neither vendor lists an intro discount on the pages read.

Price gap, stated plainly: $0.01 a month at the entry tiers and $0.01 at the $200 tiers (our arithmetic). Nobody should pick on price here. Pick on which tool you’ll open every morning.

For coding: Antigravity quotas vs Codex limits

Here’s everything both companies publish about coding limits. Neither prints a number, so neither will I.

Google AI Ultra in Antigravity. Google’s Antigravity plans doc (verified Nov 3, 2026) gives Ultra “The highest, most generous quota, refreshed every five hours”, “The highest weekly rate limits” and “Access to third-party models.” Limits “correlate with the amount of work done by the agent”, and “Usage limits for this service are subject to modification.” On the consumer pages, Ultra 5x gets “Higher” Antigravity rate limits and Ultra 20x gets “Highest” (gemini.google, Nov 2, 2026).

Models on Ultra in Antigravity’s App, CLI and IDE (models doc, Nov 3, 2026): Gemini 4 Argon, Gemini 3.8 Flash, Claude Sonnet 5.5 (thinking) and Claude Opus 5.5 (thinking). Run out and you can switch on AI credit overages (“Never” or “Always” in settings); credits are “consumed at standard Gemini Enterprise consumption pricing.” Google doesn’t publish an AI credit price. No bring-your-own-key.

ChatGPT Pro in Codex. OpenAI: “Pro plans currently have no five-hour limit”, and “Weekly limits may also apply.” Local messages and cloud tasks share one allowance, and “Cloud tasks may use more of your allowance than local messages” (Codex pricing, Nov 1, 2026). Pro 200 gets more usage than Pro 100, and Pro 500 the most; “You cannot bypass a limit”, and Support can’t reset one (Pro help, Oct 29, 2026). At a cap, Codex’s help page lists four options: add credits, apply an available reset, upgrade, or wait. “Starting a new chat does not reset your usage limits.” Check with /status in the CLI (Codex help, verified Nov 1, 2026).

So who runs out first? Not comparable from published data. What you can say: Codex on Pro drops the five-hour window entirely, while Antigravity on Ultra keeps one. OpenAI’s weekly limit is basically Walt’s “We’re done when I say we’re done”: it exists, it’s real, and you’ll find out its size when it tells you.

If you’re on Pro 200 from before Oct 29, 2026, note that OpenAI’s grandfathered allowance ended that day; from Oct 29, 2026, Pro 200 runs on the newer, lower allowance at the same $200.

Deeper dives: Antigravity usage limits and Codex usage limits.

Everything else you pay for

This is where Google AI Ultra pulls ahead on raw stuff-per-dollar, if you want the stuff.

Google AI Ultra (gemini.google Nov 2, Google One Oct 29, 2026):

  • 10,000 Flow credits on Ultra, 25,000 on Ultra 20x (video and image generation in Google Flow).
  • Project Genie (Ultra only) and Jules with “Higher” or “Highest” limits.
  • YouTube Premium (individual) and 20 TB of storage, 30 TB on Ultra 20x.
  • Google Cloud credits through the Google Developer Program: $40 a month on Ultra, $100 on Ultra 20x.
  • Family sharing with up to 5 others, and “Cancel anytime. No refunds for partial billing periods.”

ChatGPT Pro (chatgpt.com/pricing and Pro help, Oct 29, 2026):

  • “Your choice of 3 usage tiers”; Ultrafast mode only on Pro 500.
  • “Longer Codex and ChatGPT Work sessions”, “Dot, your always-on agent”, “Unlimited and faster image creation”, “Maximum deep research”, “Maximum memory and context”.
  • Context of 128K tokens on instant and 400K on reasoning models.
  • Credits that work across Codex, ChatGPT Work and Word, Excel and PowerPoint.

Google’s bundle is Lumon’s Music Dance Experience from Severance: a perk you didn’t ask for, delivered with total confidence. 30 TB of storage is lovely. It won’t write your migration.

Here’s what I’d do

  1. Codex-first developer: ChatGPT Pro 100. No five-hour window on Codex is the single biggest coding difference on this page. Move to Pro 200 only after you’ve hit the weekly limit more than once.
  2. Agent-IDE person who wants Claude Opus 5.5 and Gemini 4 Argon in one place: Google AI Ultra at $99.99. Set AI credit overages to “Never” until you know your pattern, since Google doesn’t publish the credit price.
  3. You were counting on Gemini CLI: don’t buy Ultra for it. Google says the consumer tiers stopped serving it on June 18, 2026, so budget for a separate route instead.
  4. You already pay for YouTube Premium and a big storage plan: Ultra’s bundle may cancel out some of those bills. Do that math with your own receipts.
  5. Still unsure: step down a tier and compare cheaper pairs first, like Google AI Pro vs Ultra. Other top-tier pairs: Google AI Ultra vs Claude Max, Claude Max vs ChatGPT Pro and Cursor Ultra vs ChatGPT Pro. Everything else: AI coding tools compared.

Jules ships with Google AI Pro and Ultra until the wind-down; see Google Jules usage limits for the daily task counts.

FAQ

Google AI Ultra vs ChatGPT Pro: which costs less? Google AI Ultra is $99.99 a month and ChatGPT Pro starts at $100, a one-cent gap; both are billed monthly only.

Is Google AI Ultra better than ChatGPT Pro? Ultra is better for Antigravity plus Google’s bundle of storage, YouTube Premium and Flow credits; ChatGPT Pro is better for Codex, which has no five-hour limit on Pro.

Does Google AI Ultra include Antigravity? Yes, Ultra gets Antigravity’s highest quota refreshed every five hours, the highest weekly rate limits and third-party models like Claude Opus 5.5.

Does ChatGPT Pro include Codex? Yes, ChatGPT Pro includes Codex with expanded usage and no five-hour limit, though OpenAI says weekly limits may also apply.

Does Google AI Ultra include Gemini CLI? No, Google says Gemini CLI stopped serving Google AI Pro and Ultra subscribers on June 18, 2026.

Sources

  1. Google, Gemini subscriptions (Ultra prices, Antigravity limits wording, Flow credits, bundle, refund line): https://gemini.google/subscriptions/ (verified 2026-11-02)
  2. Google One, Google AI plans (monthly-only billing, storage, Cloud credits, family sharing): https://one.google.com/about/google-ai-plans/ (verified 2026-10-29)
  3. Google Antigravity docs, Plans (Ultra quota and weekly limits, overages, no BYOK): https://antigravity.google/docs/plans (verified 2026-11-03)
  4. Google Antigravity docs, Models (models on Ultra): https://antigravity.google/docs/models (verified 2026-11-03)
  5. Google, Gemini Code Assist consumer accounts (Gemini CLI no longer served on AI Pro and Ultra): https://codeassist.google/ (verified 2026-10-29)
  6. OpenAI Help Center, About ChatGPT Pro plans (Pro 100/200/500, monthly only, limits, credits): https://help.openai.com/en/articles/9793128-about-chatgpt-pro-plans (verified 2026-10-29)
  7. ChatGPT pricing (Pro features grid, context, models): https://chatgpt.com/pricing (verified 2026-10-29)
  8. OpenAI Developers, Codex pricing (no five-hour limit on Pro, weekly limits, shared allowance): https://developers.openai.com/codex/pricing (verified 2026-11-01)
  9. OpenAI Help Center, Using Codex with your ChatGPT plan (options at a limit, /status): https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-plan (verified 2026-11-01)

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