ChatGPT vs Claude vs Gemini: which should you use?
Short answer: Pick by job, not brand: ChatGPT for an all-round assistant with Projects on every plan; Claude for long documents, careful writing and code; Gemini if you live in Google apps or need very large uploads. Test all three free on the same 3 real tasks.
| ChatGPT | Claude | Gemini | |
|---|---|---|---|
| Free plan | Yes | Yes | Yes |
| Organizing | Projects (all plans) | Projects (5 on Free) | Gems (on Free) |
| Deep research on Free | Limited | Web search on Free; Research is paid | Yes |
| Limits | Context ~27K tokens on Free | 5-hour session + weekly limits on paid plans | Refresh every 5 hours up to a weekly cap |
| Big files | Limited uploads on Free | PDFs, spreadsheets, can create files | Up to 1,500 pages of documents |
| Paid entry price | Check at checkout (not shown as text) | Pro $20/mo or $17/mo yearly | Plus/Pro not shown as text; Ultra $99.99/mo |
- Pick 3 tasks you actually do every week.
- Run each in all three, with the same prompt.
- Score: was it right, did it cite, did it save you time?
- Pay for at most one, the winner.
Related questions
Which is best for coding?
See best AI for coding.
Which is best for research with sources?
Perplexity is built for sourced answers; see Perplexity vs ChatGPT.
Where these facts come from
- ChatGPT pricing: plans, features, context sizes
- developers.openai.com/api/docs: Responses API, Structured Outputs, Evals
- help.openai.com and platform.openai.com blocked our checker (403) on Oct 29, 2026
- claude.com/pricing: plans and prices
- Claude help: usage and length limits: 5-hour session and weekly limits
- Anthropic docs: API, prompt caching, prompt engineering, tool use
- Claude Code quickstart: install and requirements
- gemini.google/subscriptions: plans, limits, uploads
- ai.google.dev: Gemini API, Interactions API, tools, Batch API
Checked Oct 29, 2026. Plans change, so confirm on the official page before you pay.
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