Compare side by side
Feature checklists make every tool look equivalent. This table leads with the three things that actually differ — what it costs you before it works, whether your files leave your device, and where the free version stops.
Hugging Face SpacesArenaDeepSeekGoogle AI StudioFour is the maximum — remove one to add another.
| Hugging Face Spaceshuggingface.co | Arenaarena.ai | DeepSeekdeepseek.com | Google AI Studioaistudio.google.com | |
|---|---|---|---|---|
| What it does | Thousands of runnable AI demos, no model installed on your machine | Put one prompt to two anonymous models and vote for the better answer | Open-weight reasoning model you can use free in a chat window | Prompt playground with model, temperature and system-prompt controls |
| What it costs you | No sign-upWorks the moment the page loads. No account, no email, no trial. | No sign-upWorks the moment the page loads. No account, no email, no trial. | Free accountFree to use, but you have to register before it will do the job. | Free accountFree to use, but you have to register before it will do the job. |
| Your files | Runs on their server | Runs on their server | Runs on their server | Runs on their server |
| Where it stops | Free Spaces sleep when idle and queue under load, so a popular demo can take minutes to respond. | Prompts and votes are collected for research and can end up in public datasets. | Needs an account to send a single message, and capacity has been unavailable at peak times more than once. | Free-tier requests are rate-limited per minute and per day, and free-tier prompts are not private. |
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| Category | AI Assistants & Generators | AI Assistants & Generators | AI Assistants & Generators | AI Assistants & Generators |
| Last checked | 2026-07-29 | 2026-07-29 | 2026-07-29 | 2026-07-29 |
| Open the site | Open | Open | Open | Open |
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