METR redacted model codename cracked: PHASEONE64H hints at 64 hours of agentic training
basedjensen · x · 2026-09-26
Users discovered that the redacted portion of a METR-evaluated model codename, PHASEONE[big], is actually PHASEONE64H — with the 64H suffix read as 64 hours allocated to agentic tasks during training.
@xlr8harder notes this was a semi-secret but not surprising, and it implies something about the lab's training methods. Link to the original METR eval is included.
More from Models
- User ditches Grok 4.7 for 4.6: endless thinking, stalls on long context — lxfater · 2026-09-26
- Codex outage reports: workspace routing discovery timeout error — koltregaskes · 2026-09-26
- ChatGPT RLHF Co-Author's Startup Jev in Funding Talks at $10B Valuation — aakashgupta · 2026-09-26
- Decision Index 0.2.1: SGD benchmark pulled over bug, scoring fixes applied — multimodalart · 2026-09-26
- Aider creator slams lab safeguards for blocking legitimate reverse-engineering work — zeeg · 2026-09-26
- Why AI slop longposts get likes: LLMs optimized for human preference — AymericRoucher · 2026-09-26