Best free-tier AI tools for research and writing (criteria, not vibes)

Free tiers are useful for drafting and research triage, not for “unlimited GPT replacement.” Score tools on daily caps, export, and citation behavior — then pay only for the bottleneck.

Scoring rubric we use

1. Cap clarity — messages/day or tokens stated publicly?
2. Citation / sources — links you can open, or vague “according to…”?
3. Export — Markdown/PDF/copy without a paywall?
4. Privacy — is free-tier data used for training? (read the current policy)
5. Job fit — chat vs long-form writing vs web research

Starting shortlist (verify live pricing)

Browse Free-only for listings we tagged with a usable free path.

When free is the wrong answer

• Compliance workflows that need BAAs / SOC reports
• High-volume production content
• Anything that must not train on your prompts

Upgrade the one tool that hits the cap first; do not buy five overlapping seats.

Caps change. Re-check the vendor page before you commit a workflow.