Google's AI assistant built into Search, Gmail, and Docs, with a standalone chat app for writing, research, and image generation. Generous free tier with a Google account.
Top match
You're being recommended Google Gemini because it's a strong fit for research and long-form writing, with deep integration across the Google ecosystem. It comes with a generous free tier when you sign in with a Google account, and it's built right into Search, Gmail, and Docs. If you later want the most capable model or deeper integration across Workspace apps, that's when upgrading makes sense.
Specialized research & long-form writing tools
A general assistant can do this, but these are built specifically for it — often with better results.
Free AI tool that summarizes text, PDFs, Word docs, PPTs, and videos using NLP, with a free tier of 30 credits and support for 50+ languages.
FreeOpen-source AI tool for screening and labeling literature.
Free
Also worth a look
Anthropic's AI assistant known for thoughtful long-form writing, coding, and analysis of large documents. Free tier available; paid plans unlock higher limits and the most capable models.
FreemiumFree planAPIGeneral-purposeAI answer engine that searches the web and responds with cited sources — a research-first alternative to traditional search. Free tier includes standard searches; Pro unlocks advanced models.
FreemiumFree planAPIGeneral-purpose