Semantic Scholar
Open academic graph and API used across research tooling.
Full Semantic Scholar record →Head to head
Semantic Scholar vs Glean
Semantic Scholar (Allen Institute for AI) and Glean (Glean) both sit in Search & Research. Semantic Scholar is the cheaper entry point at Free, open API. Glean shipped more tracked changes in the last 30 days (2 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Semantic Scholar Allen Institute for AI | Glean Glean |
|---|---|---|
| Segment | Search & Research | Search & Research |
| Version | 2025 | June 2026 |
| Entry cost | Free, open API | from $100/mo |
| Pricing tiers | — | Enterprise free |
| Model stack | SPECTER embeddings | 40+ Unique LLMs ( · Claude · growing!) · Model hub (supports 40+ LLMs) |
| Context window | — | Model-dependent |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 2 |
| Origin | Global | Global |
| Capabilities | 200M+ papers, Citation contexts, Open API | Permissions-aware search, Knowledge graph, Glean Agents, 100+ connectors, Assistant, Enterprise Search, Glean Assistant, Agent Builder |
Glean
Glean indexes SaaS, docs and chat with permissions-aware retrieval, then layers assistants and agents on the resulting knowledge graph.
Full Glean record →