In short
How they differ.
Worked out from the makers' own pages, read Oct 20, 2026. Prices change; check before you pay.
- Both have a free plan.
- Gemini Deep Research's cheapest paid plan is cheaper: $4.99 a month against $8.
- Both run on the same kinds of device (web, phone app, computer app).
Side by side
The details.
| ChatGPT deep research | Gemini Deep Research | |
|---|---|---|
| Made by | OpenAI · United States | Google · United States |
| What it says it is | “Deep research helps you accomplish complex online tasks by reasoning, researching, and synthesizing information” | “Save hours of work with Deep Research as your personal research assistant.” |
| Free plan | YesPricing page lists "Limited deep research" on Free and Go; Plus "Expanded deep research"; Pro "Maximum deep research". Help center: "Deep research usage varies by plan." Exact task counts not published on the pages read. | YesDeep Research is listed among free Gemini features; free usage limits are not stated in numbers. Paid plans give "higher usage limits". |
| Plans | Free: freeGo: $8 a monthPlus: $20 a monthPro: $100 a monthBusiness: $25 a month | Free: freeGoogle AI Plus: $4.99 a monthGoogle AI Pro: $19.99 a monthGoogle AI Ultra: $99.99 a month |
| Runs on | web, desktop, mobile | web, mobile, desktop (Windows, macOS apps) |
| Latest update | — | — |
| Its terms | “When you use our services for individuals (Free, Plus, Pro), we may use your content to train our models.”What it does with your data · OpenAI Help Center: How your data is used to improve model performance | “Google uses your activity to provide, develop, and improve its services (including training generative AI models)”What it does with your data · Gemini Apps Privacy Hub |
| Disputes | None on file | None on file |
| Sources | Prices, Oct 20, 2026 · Description · company-reported | Prices, Oct 20, 2026 · Description · company-reported |
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