OpenAI
No sign-up
ChatGPT
Everyday text chats with no fixed message cap (with abuse protection). File uploads, image creation, voice and deep research are limited, with no numbers published.
checked Oct 16 · ⚠
Free AI chat, no sign-up
These open right in your browser, with no email or phone number. Without an account your history usually isn't saved, so copy anything you need.
Hit the limit? Move your chat to another free AI →
No account at all
Moonshot AI
No sign-up
Kimi
There is a limit on conversations per period, with no numbers published.
checked Oct 16
DuckDuckGo
No sign-up
Duck.ai
Free with a daily limit (no number published) and no account. You pick the model, including Claude Haiku and open models; PDFs up to 15 pages.
checked Oct 17
Brave
No sign-up
Ask Brave (Brave Leo)
Free, with availability that depends on load and no numbers published. Ask Brave works in any browser without an account.
checked Oct 17
Opera
No sign-up
Opera AI
Free inside the Opera browser. There is no fixed limit, but heavy abuse can block access until the next day.
checked Oct 17
No account to chat; an account only for some features
Google
Sign-up optional
Gemini
Standard usage limits refresh every 5 hours up to a weekly cap, with no usage numbers published. Context window of 32k tokens. Deep Research may be unavailable at peak demand.
checked Oct 17
xAI
Sign-up optional
Grok
A limited free quota for chat and for voice, each with its own reset. No numbers published.
checked Oct 17
Perplexity AI
Sign-up optional
Perplexity
3 Pro Searches per day and 1 Research per month; file uploads are limited. No image generation or advanced models.
checked Oct 16 · ⚠
Alibaba
Sign-up optional
Qwen Chat
Free to use with no published limits. There is no paid plan.
checked Oct 16
Updated