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 16 Oct · ⚠
Free AI for Assignments
These chatbots help you understand an assignment, organize your ideas and find sources, all on a free plan.
Using it for school, college or exam prep? Check your institution's rules on AI first.
Tip to stretch the free limit
Ask Perplexity for linked sources and check each one; use another chatbot to review your own draft instead of asking for a finished assignment.
Ready-to-copy prompt
Here is my assignment: [paste it]. Help me outline it with an introduction, 3 main points and a conclusion, and tell me what kind of source to look for in each part.
The picks, in the order we'd try them
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 17 Oct
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 16 Oct · ⚠
DeepSeek
Account needed
DeepSeek
Free to use with no published limits. Two modes, Expert and Instant. There is no paid plan.
checked 16 Oct
Microsoft
Account needed
Microsoft Copilot
A limited free version that depends on available capacity, with no numbers published. When you hit the limit, you wait or upgrade.
checked 17 Oct
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 17 Oct
Other tasks
Updated