DOAChatGPT vs Gemini: which one to choose?
We compare ChatGPT and Gemini on price, devices, difficulty and who each one suits, using the data on their DOA pages.
ChatGPT
OpenAI's general assistant for writing, reasoning, file analysis and coding. The most familiar starting point for almost any AI task.
Gemini
Google assistant integrated with Gmail, Docs, Drive and YouTube. Strong at search and Google-account context.
DOA verdict for writing
ChatGPT wins
88.5 ChatGPT · 83.7 Gemini / 100
Daily writing, studying and first contact with AI. Very easy to use and versatile.
Why
- DOA score in writing · ChatGPT: 93/100 vs 83/100
- Free version · Gemini: 86/100 vs 72/100
- Ease of use: tie
- Devices · ChatGPT: 5 vs 4
Pick Gemini if…
Anyone already living in Gmail and Docs. Free and well connected to Google's ecosystem.
How we decide: this verdict uses a formula of its own for comparisons, different from the DOA score: DOA score in writing (60%), free version (20%), ease of use (10%) and devices (10%). Data from each tool page, reviewed on 14 October 2026. How we calculate the DOA score and the verdict
| ChatGPT | Gemini | |
|---|---|---|
| Devices | Browser · Windows · Mac · Android · iPhone / iPad | Browser · Android · iPhone / iPad · Windows |
| Level | Easy | Easy |
| What it is for | Writing Getting work done Research Study Coding | Writing Research Getting work done Study Image |
| DOA score | 93/100 | 83/100 |
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On the overall DOA score, ChatGPT gets 93/100 and Gemini 83/100. It is an indicative rating: try both on a real task before you pay.
ChatGPT and Gemini side by side: plans, models and privacy
Only facts from their official sites, linking each source. If the site doesn't publish something, we say so.
Data checked on 14 October 2026.
| Item | ChatGPT | Gemini |
|---|---|---|
| Free plan | Unlimited text chats (with abuse guardrails). Limited uploads, image creation, voice and deep research.source: chatgpt.com (opens in a new tab) | €0/month with a Google account. Usage limits reset every 5 hours up to a weekly cap.source: gemini.google (opens in a new tab) |
| Cheapest paid plan | Go: €8/month. Plus: €23/month (Spain prices on the official page).source: chatgpt.com (opens in a new tab) | Google AI Plus: €4.99/month (Spain price).source: gemini.google (opens in a new tab) |
| Top plan | Pro: from €103/month in Spain, in three usage tiers. The help centre lists US$ prices: Pro 100, Pro 200 and Pro 500 at US$100, US$200 and US$500/month. Monthly billing only.source: chatgpt.com (opens in a new tab) · help.openai.com (opens in a new tab) | Google AI Ultra: €99.99/month (5x AI Pro limits) or €219.99/month (20x).source: gemini.google (opens in a new tab) |
| Models by plan |
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| Documented features | Codex included (limited on Free and Go). Pro includes Pro models, Codex, deep research, image creation, memory and file uploads.source: chatgpt.com (opens in a new tab) · help.openai.com (opens in a new tab) | Usage limits 2x higher than free with AI Plus and 4x with AI Pro. With AI Pro and Ultra, Gemini in Gmail, Docs and other Google apps.source: gemini.google (opens in a new tab) |
| Privacy: does it train on your chats? | OpenAI may use your chats to train its models; turn it off in Settings › Data controls (“Improve the model for everyone”). Temporary chats are not used.source: help.openai.com (opens in a new tab) | With “Keep Activity” on, Google uses your chats to improve its models, with human reviewers. If you turn it off or use temporary chats, they are not used for training (unless you send feedback).source: support.google.com (opens in a new tab) |
| Apps and platforms | Browser · Windows · Mac · Android · iPhone / iPadper the DOA tool page (updated 14 October 2026) | Browser · Android · iPhone / iPad · Windowsper the DOA tool page (updated 9 October 2026) |
| Best model in the DOA ranking | GPT-6.1 Sol: 92.4/100 · position 3AI models | Gemini 3.1 Pro (preview): 74.2/100 · position 9AI models |
Key differences
- Currency: both list euro prices for Spain: Google AI Plus, from €4.99/month; ChatGPT Go, €8/month, and Plus, €23/month.
- Free plan: Gemini limits reset every 5 hours up to a weekly cap; ChatGPT allows unlimited text chats with abuse guardrails.
- Top plan: Google AI Ultra, €99.99 or €219.99/month; ChatGPT Pro (the most expensive), US$500/month.
- Training: Gemini uses your chats if “Keep Activity” is on; ChatGPT may use them unless you turn off “Improve the model for everyone”.
The DOA model ranking averages two external sources. We show the best-scoring model among those our table places in a plan of each app.
Model quality: DOA model ranking (average of Arena and Epoch AI, no DOA opinion) →
ChatGPT is a better fit for
- Daily writing, studying and first contact with AI
- Teams that want one familiar general assistant
Gemini is a better fit for
- Anyone already living in Gmail and Docs
- Students who need a solid free plan