Compare
Google AI Pro vs ChatGPT Plus (2026): Which $20 Plan for Coding?
Google AI Pro vs ChatGPT Plus at about $20 a month: coding tools (Antigravity, Jules vs Codex), usage limits, storage and extras, and which one to pay for.
8 min read
Google AI Pro prices and inclusions checked Oct 29, 2026 on Google’s AI plans page and gemini.google/subscriptions; ChatGPT Plus features checked Oct 29, 2026 on chatgpt.com/pricing, Codex limits Oct 28, 2026 on Codex pricing, Plus billing Oct 25, 2026 on OpenAI’s Plus help page. Every source is listed at the bottom. No affiliate links on this page (how we work).
This page is about the two $20 subscriptions as coding tools. For the chatbots themselves (writing, search, apps), see Gemini vs ChatGPT.
Quick answer
As of Oct 29, 2026: the price is a tie ($19.99 vs $20 a month), so pick by where you code.
- You live in a terminal or VS Code and want OpenAI models: ChatGPT Plus. Codex comes with it on the web, CLI, IDE extension and iOS, and OpenAI publishes per-model ranges for how many messages you get every five hours.
- You want an agent IDE with Gemini 4 Argon and Claude 5.5 in one place: Google AI Pro. It carries Antigravity’s “Expanded” agent requests and Jules, plus 5 TB of storage.
- You’re paying for a year anyway: Google AI Pro has a $199.99 annual price. ChatGPT Plus is monthly only, so a year is $240.
- You used Gemini CLI: note that Google AI Pro no longer serves Gemini CLI. Google moved those users to Antigravity CLI on June 18, 2026.
Neither company publishes hard numbers for its plan’s caps. OpenAI at least publishes ranges for Codex. Google publishes adjectives.
We haven’t tested either plan. Everything below is from Google’s and OpenAI’s own pages, quoted and dated.
Side by side
| Plan | Monthly | Yearly | Coding tools |
|---|---|---|---|
| Google AI Pro | $19.99 | $199.99 | Antigravity, Jules |
| ChatGPT Plus | $20 | Not offered | Codex |
Google prices from Google’s AI plans calculator, “Monthly ($19.99)” / “Annual ($199.99)” (verified Oct 29, 2026). ChatGPT Plus: “Price: $20/month (billed monthly)” and “we do not support annual billing or the option to pay for multiple months in advance” (verified Oct 25, 2026). Both are US prices; check current price in your country before you subscribe.
Twelve months of Google AI Pro billed monthly is $239.88, so the annual plan saves $39.89. Twelve months of Plus is $240, with no way to prepay. If you’re the commit-for-a-year type, that’s Google’s one clean win on price.
Coding: Antigravity and Jules vs Codex
What Google AI Pro gives you
Google lists three coding-relevant lines for Pro (verified Oct 29, 2026):
- Antigravity: “Expanded” agent requests on Google’s comparison table (Plus is “Limited”, Ultra “Higher” and “Highest”). The Pro card says “Expanded access to Gemini 4 Argon in Google Antigravity and Google AI Studio”. The other subscriptions page words the same thing as “Entry rate limits to agent model in Google Antigravity”.
- Jules: “Expanded” task limits on the comparison table, “Higher limits” on the subscriptions page.
- Developer extras: “200 compute units per month” in Colab and “$10 monthly” Google Cloud credits through the Google Developer Program.
Inside Antigravity, Pro adds Gemini 4 Argon and Claude Sonnet 5.5 and Claude Opus 5.5 over the free tier. Two footnotes: Claude 5.5 on Pro is “non-trial subscriptions only”, and Argon is “Not available in Antigravity IDE. Available in the Antigravity App, Antigravity CLI, and IDE extensions” (models docs, verified Oct 26, 2026). On Nov 2, 2026, Claude Sonnet 4.6, Claude Opus 4.6 and GPT-OSS-120b leave the docs’ “Free & Google AI Plus” column, which makes Pro the cheapest Google plan with Claude in Antigravity.
What Pro no longer gives you is Gemini CLI. Google’s Code Assist page: “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” (verified Oct 29, 2026). What still works for Gemini CLI, and on what limits: Gemini CLI free tier limits.
Is Antigravity free without Pro? Yes, with a smaller weekly quota: Is Antigravity free?
What ChatGPT Plus gives you
OpenAI’s Codex page lists “Codex on the web, in the CLI, in the IDE extension, and on iOS”, “Cloud-based integrations like automatic code review and Slack integration” and “Flexibly extend usage with ChatGPT credits” for Plus (verified Oct 26, 2026). The pricing grid marks Codex “Yes” on Plus, against “Limited” on Free and Go (verified Oct 29, 2026).
The models are OpenAI’s own: GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, GPT-6 Luna and the new GPT-6.1 Terra, which is “available in Work and Codex on Plus, Pro, Business, Enterprise, and Edu plans” (verified Oct 28, 2026). No Claude, no Gemini. That’s the trade: one vendor’s models, but a lot of places to use them. Plus also lets “participating tools” use your allowance through Sign in with ChatGPT (verified Oct 25, 2026).
So: Google bundles more model families into one agent app. OpenAI bundles one model family into more surfaces. If your workflow is git, a terminal and an editor you already like, the CLI and IDE extension matter more than a new IDE.
Usage limits, as published
Google AI Pro. In the Gemini app, Pro has “4x higher usage limits than Free”, and the footnote says the limit “refreshes every 5 hours until you reach your weekly limit. You can extend your limits by purchasing AI credits” (verified Oct 29, 2026). Antigravity’s plans docs say Pro gets “A high, generous quota, refreshed every five hours until the weekly limit is reached” (verified Oct 25, 2026). AI credits come in “2,500, 5,000, or 20,000” increments; Google doesn’t publish the price (verified Oct 27, 2026). No hard number anywhere for the five-hour or weekly caps.
ChatGPT Plus. For chat, OpenAI says “Plus subscriptions may include usage limits such as message caps, especially during high demand. These limits may vary based on system conditions” (verified Oct 25, 2026). For Codex, it publishes estimated local messages per five hours on Plus (verified Oct 28, 2026):
| Codex model | Per 5 hours |
|---|---|
| GPT-6.1 Terra | 35–285 |
| GPT-6.1 Sol | 15–160 |
| GPT-6 Astra | 5–45 |
| GPT-6 Sol | 15–150 |
| GPT-6 Luna | 350–3,000 |
OpenAI adds that “These estimates are not fixed message limits” and “Weekly limits may also apply.” Local messages and cloud tasks share the allowance. At the cap you can add credits, apply an available reset, upgrade, or wait, and “Starting a new chat does not reset your usage limits” (verified Oct 26, 2026). Credit prices “depend on your plan or agreement” and aren’t published for Plus.
A range of 5 to 45 isn’t a promise. But it’s a range, which is more than Google gives you for Antigravity. If you need to plan a sprint around your tool, OpenAI’s page is the one you can actually plan with. That’s a low bar, and it’s a little sad that it counts as a win.
Extras: storage and the rest
Google stuffs Pro with things that aren’t about coding (verified Oct 29, 2026): 5 TB of storage, 1,000 Flow credits and 10,000 Flow Music credits a month, YouTube Premium Lite, Google Home Premium Standard, “a limited trial of Veo 3.1 Lite”, and sharing with up to 5 others in a family group. It’s Joey wearing every piece of Chandler’s clothing at once: “Could I BE wearing any more clothes?” If you’d pay for 5 TB of Google storage anyway, that changes the math.
ChatGPT Plus spends its extras on the assistant itself (pricing grid, verified Oct 29, 2026): Deep research “Yes”, Sites “Yes”, image generation with Thinking “Yes”, Developer mode “Yes”, Memory “Expanded”, Voice “Expanded”, and scheduled tasks. Context is listed at 54K for instant answers and 256K for reasoning, about 320 pages of input. API usage “is separate and billed independently” (verified Oct 25, 2026); the same is true on Google’s side, where Gemini API pricing is its own bill (Gemini API pricing).
Here’s what I’d do
If I coded every day in a terminal and an editor, I’d pay for ChatGPT Plus. Codex shows up everywhere I already work, and the published five-hour ranges mean I can tell when I’m about to run dry.
If I wanted Claude 5.5 and Gemini 4 Argon side by side in an agent app, or I was already paying Google for storage, I’d take Google AI Pro on the annual plan. Just know that you’re buying Antigravity, not Gemini CLI.
Buying both? That’s double-dipping, and unlike George at the wake, nobody will yell at you. At about $40 a month you get the two biggest model families in separate tools. Before you do, check whether the next tier is the better buy: Google AI Pro vs Ultra, ChatGPT Plus cost, or the full table at AI coding tools compared.
If you care about Jules agent tasks on a Google AI plan, Google Jules usage limits lists tasks/day and concurrent caps by plan.
FAQ
Is Google AI Pro better than ChatGPT Plus? For coding it depends on your setup: Plus wins on Codex surfaces and published limits, Google AI Pro on model choice in Antigravity, annual pricing and 5 TB storage.
Google AI Pro vs ChatGPT Plus for coding? ChatGPT Plus includes Codex in the CLI, IDE extension, web and iOS; Google AI Pro includes Antigravity “Expanded” agent requests and Jules but no longer Gemini CLI.
Google AI Pro vs ChatGPT Plus vs Claude Pro? All three are about $20 a month; Claude Pro is $20 monthly or $17 a month billed annually, compared in Google AI Pro vs Claude Pro.
Is ChatGPT Plus available yearly? No, OpenAI bills Plus at $20 a month and doesn’t offer annual billing or prepaying multiple months.
Does Google AI Pro include Gemini CLI? No, since June 18, 2026 Google AI Pro no longer serves Gemini CLI; Google points users to Antigravity CLI instead.
Which plan has clearer usage limits? ChatGPT Plus, because OpenAI publishes per-model Codex ranges per five hours; Google publishes only labels like “Expanded” for Antigravity.
Sources
- Google AI plans (prices, annual, Antigravity and Jules labels, storage, Flow, Colab, Cloud credits, family sharing): https://one.google.com/about/google-ai-plans/ (verified 2026-10-29)
- Google AI subscriptions (Pro card, 4x usage, five-hour refresh footnote, Veo 3.1 Lite trial): https://gemini.google/subscriptions/ (verified 2026-10-29)
- Antigravity docs, Plans (Pro quota wording): https://antigravity.google/docs/plans (verified 2026-10-25)
- Antigravity docs, Models (Argon and Claude 5.5 on Pro, Nov 2 removals): https://antigravity.google/docs/models (verified 2026-10-26)
- Google One Help, AI credits (increments): https://support.google.com/googleone/answer/17103110 (verified 2026-10-27)
- Gemini Code Assist consumer accounts (Gemini CLI on AI Pro ended June 18, 2026): https://codeassist.google/ (verified 2026-10-29)
- ChatGPT pricing (Plus feature grid, context, Codex access): https://chatgpt.com/pricing (verified 2026-10-29)
- OpenAI Help, What is ChatGPT Plus (price, monthly billing, usage limits wording, API separate, Sign in with ChatGPT): https://help.openai.com/en/articles/6950777-what-is-chatgpt-plus (verified 2026-10-25)
- Codex pricing (Plus surfaces, five-hour estimates, weekly limits, GPT-6.1 Terra): https://developers.openai.com/codex/pricing (verified 2026-10-28)
- OpenAI Help, Using Codex with your ChatGPT plan (at the cap, credits): https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-plan (verified 2026-10-26)
- Claude pricing (Claude Pro $20 / $17 annual): https://claude.com/pricing (verified 2026-10-29)