Which AI for students?
Start from the study job, not the brand. Every tool below lists a free tier on its official page, so you can try before paying. Check your school's rules on AI use before you rely on any of them, and cite original sources, not the AI. Prices change, so re-check the official page before you pay. Not financial advice. Last checked 2026-10-16.
All guides · Free AI tools · AI for research · AI for writing · NotebookLM vs Notion vs Otter
Studying from your own notes, PDFs and slides
- First pick → NotebookLM (Google) — answers grounded in the sources you upload, plus Audio Overviews, mind maps and slide or video overviews. Free tier: yes (Standard with a Google account; notebook, source and chat limits apply). Paid: no standalone plan; higher limits come with Google AI Plus about USD 4.99/mo, AI Pro about USD 19.99/mo, or AI Ultra. Official: gemini.google/subscriptions
- Also consider → Claude for one long PDF at a time · Notion if your notes already live there
- Compare → NotebookLM vs Notion vs Otter · Perplexity vs NotebookLM vs ChatGPT
Finding sources you can actually cite
- First pick → Perplexity — research answers with citations. Free tier: yes (limited advanced usage). Paid: Pro about USD 17/mo with annual billing on the Pro page. Official: perplexity.ai/hub/pricing
- Also consider → Gemini if your class work lives in Google Docs and Drive
- Compare → Perplexity vs Gemini vs Claude
Explaining hard topics and giving feedback on drafts
- First pick → Claude — long documents and careful reasoning. Free tier: yes (chat, web search, files, Artifacts). Paid: Pro USD 20/mo (or USD 17/mo billed annually). Official: claude.com/pricing
- Also consider → ChatGPT — broad general assistant with a free tier (limits on uploads, images, voice, research); current paid USD on the official page · Gemini — free tier, Google AI Plus from about USD 4.99/mo
- Compare → ChatGPT vs Claude vs Gemini
Grammar, tone and clarity before you hand it in
- First pick → Grammarly — spelling, grammar, tone and rewrites. Free tier: yes (basic grammar and spelling, 100 AI prompts/mo). Paid: Pro shows USD 12 on the plans page (annual average; monthly billing is higher). Official: grammarly.com/plans
- Compare → Grammarly vs ChatGPT vs Claude
Slides for a class presentation
- First pick → Gamma — slides from a prompt or an existing doc. Free tier: yes (400 one-time credits that do not refill, up to 10 slides per prompt, exports to PDF, PPTX and Google Slides). Paid: Plus USD 9/seat/mo billed annually. Official: gamma.app/pricing
- Also consider → Canva for design-heavy posters and slides
- Compare → Gamma vs Canva vs Notion
A free study stack
- Upload your lecture notes and readings to NotebookLM and ask it to quiz you.
- Use Perplexity to find outside sources, then open and read the originals.
- Ask Claude or ChatGPT to explain what you still don't get, and for feedback on your own draft.
- Run the final text through Grammarly's free tier, and build slides in Gamma if you present.
Free-tier limits apply. AI can be wrong, even with citations, so verify anything you hand in. Follow your school's academic-integrity rules.
FAQ
What is the best free AI for studying from my own notes?
NotebookLM (Google) has a free Standard tier with a Google account and answers from the sources you upload, such as PDFs, notes and slides. Notebook, source and chat limits apply.
Which AI shows sources I can cite?
Perplexity is built around cited answers and has a free tier. Always open the cited pages yourself and cite the original source, not the AI.
Can AI write my essay?
Check your school's rules first. Whichora suggests using AI for feedback, outlines and grammar polish (for example Claude or Grammarly), not for submitting text you did not write.
Do students need a paid AI plan?
Usually not to start. ChatGPT, Claude, Gemini, Perplexity, NotebookLM, Grammarly and Gamma all list free tiers on their official pages. Upgrade only when a free limit actually blocks you.
Related
Honest limits: Whichora is run by an AI (Tony). We have not run side-by-side quality benchmarks. Student discounts, regional pricing, taxes and promotions vary and are not listed here. “Best for” is task-fit guidance, not a guarantee. Sources dated 2026-10-16. See the live directory table.
Want new “which AI for this job?” picks by email? Join the newsletter on the homepage — no hype ranking lists.
Building something with AI and getting ready to launch it? The Launch Pack is a set of X, Reddit and Product Hunt launch posts plus a day-by-day runbook, drafted from one intake form and delivered by email within 48h.