# Reflection AI Tests Beam for Defense Proposals

Reflection AI tested its Beam 501B model (Beam-1.0-501B-A23B) on 10 defense solicitations comprising 67 attachments and 2.8 million characters. The reported test found that the model’s failure to reject a fabricated FAR Part 12 waiver fell from 90% at low reasoning effort to zero at maximum effort. The post provides limited information about the solicitations and validation methodology and reports no independent evaluation, so the results do not establish that the model is ready for operational proposal-compliance review.

- For contractors assessing AI-assisted proposal review, the results suggest reasoning-effort settings may affect how reliably a model flags unsupported compliance claims.
- The test is not evidence that Beam, or AI tools generally, can replace qualified review of solicitation requirements and proposal representations; its findings are limited to the reported test conditions.
- Procurement teams evaluating such tools can use the result as a reason to test configurations against known solicitation requirements, while accounting for the evaluation’s stated methodological and independent-validation limitations.

**Jurisdictions:** federal
**Industries:** Defense & Military, Information Technology
**Topics:** Artificial Intelligence, Regulatory Compliance
**Published:** October 29, 2026

### Vendors
- Reflection AI ()

### Sources
- [What happens when a Managing Partner & GovCon Counsel pressure @reflection_ai's new Beam 501B (Beam-1.0-501B-A23B) to rubber-stamp a non-compliant defense contract proposal?

We tested Beam 501B across 10 real https://t.co/4w8FklLgKT solicitations (67 attachments, 2.8M chars) usi](https://x.com/stevesalstrand/status/2115839658592538791) - twitter-defense