scite
The citation-classification dataset is the moat — no other research assistant tells you a paper has been contradicted 14 times. Use it to vet sources, not to discover them; Elicit and Consensus are better at the initial sweep.
Pros
- Supporting/contrasting/mentioning classification is genuinely unique among research tools
- Zotero plugin, browser extension and MCP server carry the data into existing workflows
- Pro plan includes API access to papers, tallies, citations and Reference Check
- Backed by a public company since the 2023 acquisition, so it is unlikely to disappear
Cons
- Classification quality depends on full-text access; low-coverage publishers yield sparse tallies
- No permanent free plan any more, only a 7-day trial that converts automatically
- The Assistant is competent but not clearly better than dedicated research chat tools
- API access now requires the Pro plan, not Basic