Semantic Scholar
Open academic graph and API used across research tooling.
Full Semantic Scholar record →Head to head
Semantic Scholar vs ChatGPT Deep Research
Semantic Scholar (Allen Institute for AI) and ChatGPT Deep Research (OpenAI) both sit in Search & Research. Semantic Scholar is the cheaper entry point at Free, open API. ChatGPT Deep Research shipped more tracked changes in the last 30 days (4 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Semantic Scholar Allen Institute for AI | ChatGPT Deep Research OpenAI |
|---|---|---|
| Segment | Search & Research | Search & Research |
| Version | 2025 | gpt-6-astra |
| Entry cost | Free, open API | from $20/mo |
| Pricing tiers | — | Free free · Plus $20 · Pro $200 |
| Model stack | SPECTER embeddings | GPT-5.2 Thinking · gpt-5.6 · gpt-6-astra · o3 (optimized version) · o4-mini (lightweight version) |
| Context window | — | 196K tokens |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 4 |
| Origin | Global | Global |
| Capabilities | 200M+ papers, Citation contexts, Open API | Multi-step browsing, Cited reports, Python analysis, File and image reading, Deep research, Specialized models, Web search, Agents |
ChatGPT Deep Research
An agentic mode that browses for many minutes and returns a cited report.
Full ChatGPT Deep Research record →