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-purpose
Top match
Claude is a strong fit for your research and long-form writing needs, since that's exactly where it excels. You can start on the free tier, though it has a lower daily message cap than paid plans, especially for long documents. If you regularly analyze long documents or hit that message limit, upgrading is worth considering, and note that Claude Code requires a paid plan as well.
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
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.
FreemiumFree planAPIGeneral-purposeMicrosoft's AI assistant across Windows, Edge, and Microsoft 365 for writing, summarizing, and image creation. Free to use with a Microsoft account; Pro adds Office integration.
FreemiumFree planGeneral-purpose
