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Deep AI search that finds every relevant paper on a scientific question.
Pros
- Exceptional thoroughness on hard questions
- Transparent about coverage/completeness
- Finds papers other tools miss
Cons
- Slow by design (deep searches take minutes)
- Limited free deep searches per month
- Narrow to scientific literature
✓ Where it shines / best for
- Exhaustive literature discovery on niche topics
- Researchers needing high recall
- Finding obscure but relevant papers
✕ Not the best fit for
- Fast casual lookups
- General web or business search
- High-volume daily querying on free tier
Features
- ✓ Successive/agentic deep literature search
- ✓ Exhaustive paper discovery (high recall)
- ✓ Relevance scoring and reasoning trace
- ✓ Coverage estimates for completeness
- ✓ Topic and question-based deep searches
- ✓ Detailed per-paper relevance explanations
- ✓ Designed for hard, niche research questions
- ✓ Report-style output
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free | $0 | month | ~5 deep searches/month |
| Pro | $16 | month | Billed annually; ~10x higher usage limits than Free |
| Team | $15 | user/month | Billed annually; collaboration features |
| Enterprise | Custom | year | Custom pricing on request |
Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.
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