ChatGPT vs Google Gemini in 2026: $20 Plus vs $19.99 AI Pro, models and features compared
Updated: 7 days ago
Updated: November 8, 2026
ChatGPT Plus costs $20 a month and Google AI Pro, the plan that includes Gemini 4 Argon in the Gemini app, costs $19.99 a month, so at the most popular paid tier the two assistants cost practically the same. The differences sit elsewhere: OpenAI adds a cheap $8 Go tier and Pro plans at $100, $200 and $500, while Google sells AI Plus at $4.99 and two AI Ultra plans at $99.99 and $199.99, and bundles cloud storage (from 400 GB up to 20 TB) with every paid plan.
On models, ChatGPT Plus gives access to GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol and GPT-6 Luna, while free and Go users work mainly with GPT-6 Luna. Gemini's free tier runs on Google's Flash-Lite model, AI Plus on Flash, and AI Pro and Ultra on Gemini 4 Argon, which Google released on October 13, 2026. The tables below compare every plan, the context windows each company publishes, the API prices of the two flagship models and a monthly cost example for a team and for a developer workload.
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CHATGPT AND GOOGLE GEMINI PLANS AND PRICES SIDE BY SIDE.
The figures in this section come from OpenAI's ChatGPT pricing pages and Google's Gemini subscriptions page, checked on November 8, 2026. All prices are US list prices per month before tax.
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Tier | ChatGPT | Price | Google Gemini | Price |
Free | ChatGPT Free | $0 | Gemini (Google Account) | $0 |
Entry paid | ChatGPT Go | $8 | Google AI Plus | $4.99 |
Main paid | ChatGPT Plus | $20 | Google AI Pro | $19.99 |
High usage | ChatGPT Pro | $100, $200 or $500 | Google AI Ultra | $99.99 or $199.99 |
Teams | ChatGPT Business | $25 per user monthly, $20 annually | Gemini Enterprise Business | $21 per seat |
Large companies | ChatGPT Enterprise | Contact sales | Gemini Enterprise Standard and Plus | $30 per seat |
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The two lineups mirror each other closely at the $20 level, and the gap opens at the edges. Google's entry plan costs about $3 less than ChatGPT Go and includes 400 GB of storage, while OpenAI's Go plan offers more messages, uploads, images and voice than the free tier and, according to OpenAI's plan page, may include ads. At the top, OpenAI splits Pro into three usage levels, with an Ultrafast mode reserved for the $500 plan, while Google's two Ultra plans are sold as 5x and 20x the AI Pro usage limits.
Storage is the most concrete extra on Google's side: AI Pro includes 5 TB shared across Gmail, Drive and Photos, and AI Ultra starts at 20 TB. ChatGPT plans include no general-purpose cloud storage, so a buyer who already pays Google One for storage can treat part of the AI Pro price as money already spent.
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CHATGPT VS GEMINI MODELS ON EACH PLAN.
OpenAI's API changelog dates the current GPT-6 generation to the autumn of 2026: GPT-6 Astra on September 3, GPT-6 Sol and GPT-6 Luna on September 22, GPT-6.1 Sol on September 29 and GPT-6.1 Terra on October 26. In the ChatGPT app, OpenAI's plan page lists GPT-6 Luna and GPT-5 Thinking Mini for Free and Go users, and a much longer menu for Plus, including GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, GPT-6 Luna and the GPT-5.6 models. Pro subscribers add GPT-5.6 Sol Pro and unlimited use of the GPT-5.6 Sol, Terra and Luna models, subject to OpenAI's abuse guardrails.
Google uses fewer model names in the Gemini app. The subscriptions page lists Flash-Lite for the free tier, Flash for AI Plus, and Gemini 4 Argon, Pro and Flash for AI Pro, with the highest access to the same models on AI Ultra. Google's release notes of October 13, 2026 confirm that Gemini 4 Argon is rolling out globally to Google AI Pro and Ultra subscribers. The AI Plus card on the subscriptions page carries a "Gemini 4 Argon" label while its feature list names only the Flash model, so a Plus subscriber should not count on Argon until Google clarifies it.
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Plan level | ChatGPT models listed | Gemini models listed |
Free | GPT-6 Luna, GPT-5 Thinking Mini | Flash-Lite |
Entry paid | GPT-6 Luna, GPT-5 Thinking Mini (Go) | Flash (AI Plus) |
$20 tier | GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, GPT-6 Luna, GPT-5.6 models | Gemini 4 Argon, Pro, Flash (AI Pro) |
Top tier | Plus models, GPT-5.6 Sol Pro, unlimited GPT-5.6 models | Highest access to Argon, Pro, Flash (Ultra) |
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Google describes Gemini 4 Argon as its frontier model for deep, multi-step work in coding, finance, law, cybersecurity and science, and reports that it ranked first on the Vals Index and scored 87% on the Embodied Reasoning (ERQA) benchmark. These are Google's own figures, and OpenAI has published no directly comparable scores for GPT-6.1 Sol on the same tests, so no head-to-head quality ranking can be drawn from official material alone.
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CHATGPT AND GEMINI CONTEXT WINDOWS AND USAGE LIMITS.
OpenAI publishes context windows per plan for the ChatGPT app. Free users get 27K tokens with Instant models, Go and Plus users get 54K with Instant and 256K with reasoning models, and Pro users get 128K with Instant and 400K with reasoning. OpenAI translates the Plus figures into roughly 40 pages of input for Instant and about 320 pages for reasoning, and the Pro figures into about 250 and 680 pages.
Google states a 1M-token context window for AI Pro in the subscriptions FAQ, and its developer documentation describes Gemini 4 Argon as having a unified window of 1,048,576 tokens shared by input, thinking and output. Google does not publish context sizes for the free and AI Plus tiers on the same page.
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Limit | ChatGPT | Google Gemini |
Context on free tier | 27K (Instant) | Not published |
Context on $20 tier | 54K Instant, 256K reasoning | 1M tokens (AI Pro) |
Context on top tier | 128K Instant, 400K reasoning (Pro) | Not published separately |
How limits work | Message estimates per 5 hours on Plus; Pro has no 5-hour limit | Compute-based, refresh every 5 hours up to a weekly cap |
Relative usage | Go and Plus expand Free limits | AI Plus 2x Free, AI Pro 4x Free, Ultra 5x or 20x Pro |
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Both companies now meter usage over five-hour windows. OpenAI's documentation gives Plus and standard Business users estimated ranges per five hours, from 15-160 local messages with GPT-6.1 Sol to 350-3,000 with GPT-6 Luna, and says these are estimates rather than fixed caps. Google replaced daily prompt counts with compute-based limits in May 2026; the limits weigh prompt complexity, features used and chat length, refresh every five hours until a weekly cap is reached, and move subscribers to smaller models once the cap on the largest models is hit.
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CHATGPT VS GEMINI FEATURES, APPS AND INTEGRATIONS.
ChatGPT's paid plans center on tools that live inside ChatGPT itself. Plus includes expanded deep research and memory, Codex for coding on the web, the command line, IDE extensions and iOS, Projects, scheduled tasks, custom GPTs, Sites and ChatGPT Work on desktop, web and mobile. Pro adds longer Codex and ChatGPT Work sessions, unlimited and faster image generation, and Dot, an always-on agent that OpenAI lists only on Pro.
Gemini's paid plans lean on Google's own apps. AI Plus brings Gemini into Gmail and Vids, and AI Pro extends it to Docs, adds video generation, 1,000 monthly Google Flow credits, entry-level access to the Google Antigravity coding tool and, in select countries, YouTube Premium Lite. The Gemini app gained Skills on September 30, 2026, which Google says will replace Gems, and a Customize menu on October 13 that connects more than 40 apps, most of them in English in the US. Google also shipped a Windows app on September 10 and built Antigravity into the macOS app on October 13.
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Feature | ChatGPT | Google Gemini |
Coding agent | Codex (Plus and above, limited on Free and Go) | Google Antigravity (entry limits on AI Pro, priority on Ultra) |
Office integration | ChatGPT Work on desktop, web and mobile | Gemini in Gmail, Docs, Vids |
Custom assistants | Custom GPTs, Projects | Skills (replacing Gems) |
Always-on agent | Dot (Pro only) | None listed on the plans page |
Video and media | Image generation on all tiers | Video generation from AI Plus; Flow credits 200 to 25,000 |
Storage | None included | 400 GB to 20 TB |
Desktop apps | Desktop app with ChatGPT Work | Windows and macOS apps |
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The practical split follows the user's existing tools. Someone who writes in Google Docs, lives in Gmail and stores files in Drive gets more from AI Pro, because the assistant sits inside those apps and the storage is included. A user who works mostly inside the chat window, writes code with an agent or builds custom assistants for repeated tasks gets a broader menu of models and tools from ChatGPT Plus. Our comparison of ChatGPT and Gemini for coding covers the developer side in more detail.
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CHATGPT VS GEMINI API PRICES FOR GPT-6.1 SOL AND GEMINI 4 ARGON.
Developers pay per token on both platforms, separately from any ChatGPT or Google AI subscription. OpenAI's API pricing page lists GPT-6.1 Sol at $2.00 per 1M input tokens and $10.00 per 1M output tokens, with cached input at $0.10. Google's Cloud announcement of October 13, 2026 sets Gemini 4 Argon at an introductory $2 per 1M input tokens and $10 per 1M output tokens through November 30, 2026, with cached input 95% cheaper, and at $4 input and $20 output after that date.
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Model | Input per 1M | Cached input per 1M | Output per 1M |
GPT-6.1 Sol | $2.00 | $0.10 | $10.00 |
GPT-6.1 Terra | $1.00 | $0.05 | $5.00 |
GPT-6 Luna | $0.10 | $0.01 | $0.50 |
GPT-6 Astra | $10.00 | $1.00 | $50.00 |
Gemini 4 Argon (until Nov 30, 2026) | $2.00 | 95% off input | $10.00 |
Gemini 4 Argon (from Dec 1, 2026) | $4.00 | 95% off input | $20.00 |
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The flagship prices are identical until the end of November and then Argon costs twice as much as GPT-6.1 Sol per token. Our Gemini API pricing guide lists the full Gemini model range, including the Flash models, and the ChatGPT pricing guide covers every ChatGPT plan in detail.
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CHATGPT VS GEMINI COST EXAMPLES FOR A TEAM AND A DEVELOPER.
For a ten-person team, ChatGPT Business costs $2,400 a year on annual billing ($20 per user per month) and $3,000 a year on monthly billing ($25 per user). Gemini Enterprise Business edition is listed at $21 per seat per month, which comes to $2,520 a year for ten seats. For individuals, a year of ChatGPT Plus costs $240 and a year of Google AI Pro $239.88; a year of ChatGPT Go costs $96 against $59.88 for AI Plus.
The API example assumes an application that sends 1,000 requests a day for 30 days, with 3,000 input tokens and 800 output tokens per request and no caching. That adds up to 90 million input tokens and 24 million output tokens a month.
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Model | Monthly input cost | Monthly output cost | Monthly total |
GPT-6.1 Sol | $180 | $240 | $420 |
Gemini 4 Argon (intro price) | $180 | $240 | $420 |
Gemini 4 Argon (from Dec 1) | $360 | $480 | $840 |
GPT-6.1 Terra | $90 | $120 | $210 |
GPT-6 Luna | $9 | $12 | $21 |
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At these assumptions, moving the same workload from GPT-6.1 Sol to Gemini 4 Argon adds about $420 a month once Google's standard price applies on December 1. Prompt caching changes the picture for workloads that reuse long system prompts or documents, because both companies discount cached input heavily, so teams with high cache hit rates should rerun the figures with their own share of cached tokens.
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CHATGPT VS GOOGLE GEMINI: WHICH PLAN FITS WHICH USER.
The verified figures point to a few clear cases. A buyer who wants the cheapest paid plan gets it from Google, since AI Plus costs $4.99 against $8 for ChatGPT Go and includes 400 GB of storage. At $20, the choice depends on habits: AI Pro adds Gemini 4 Argon, a published 1M-token context window, 5 TB of storage and Gemini inside Gmail and Docs, while ChatGPT Plus offers a wider choice of GPT-6 and GPT-5.6 models, Codex, custom GPTs, Projects and scheduled tasks. The previous version of this match-up, written for the earlier model generation, is in our Gemini 3 vs ChatGPT 5.2 comparison.
Some points remain open. Google has not stated whether AI Plus includes Gemini 4 Argon, does not publish context windows for its free and Plus tiers, and has not said when the Gemini app's model limits will move again. OpenAI does not publish numeric upload or image limits for its consumer plans and gives message counts only as estimates. Both companies changed their lineups several times in 2026, and the Argon API price change on December 1 is the next dated change on the calendar.
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