# alphaXiv vs PaperQA2

alphaXiv is free, with no paid plan attached. PaperQA2 is free, with no paid plan attached.

| | alphaXiv | PaperQA2 |
|---|---|---|
| Pricing | Free | Free |
| Free to start | Yes | Yes |
| Category | Research & Learning | Research & Learning |
| Type | Academic Research | Academic Research |
| Best for | Free overlay for arXiv papers with public discussion/comment threads per paper | RAG over PDFs with in-text citations grounded in passages |

## FAQ

### alphaXiv vs PaperQA2: what is the difference?

alphaXiv is free, with no paid plan attached and is listed for free overlay for arXiv papers with public discussion/comment threads per paper. PaperQA2 is free, with no paid plan attached and is listed for RAG over PDFs with in-text citations grounded in passages. Both sit in Academic Research.

### Is alphaXiv or PaperQA2 cheaper to start with?

Neither — alphaXiv and PaperQA2 are both free, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.

### Which should I choose, alphaXiv or PaperQA2?

Choose alphaXiv if you need free overlay for arXiv papers with public discussion/comment threads per paper; choose PaperQA2 if you need RAG over PDFs with in-text citations grounded in passages. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.

## Related

- [alphaXiv](https://aitools.flocci.in/tool/alphaxiv)
- [PaperQA2](https://aitools.flocci.in/tool/paperqa2)
- [alphaXiv alternatives](https://aitools.flocci.in/alternatives/alphaxiv)
- [PaperQA2 alternatives](https://aitools.flocci.in/alternatives/paperqa2)
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Source: Flocci AI Tools — https://aitools.flocci.in/compare/alphaxiv-vs-paperqa2

Facts last verified: October 2026