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Opus — Parameter Golf Leaderboard Push

This folder is Opus's working directory for the OpenAI Parameter Golf challenge (16MB / 10-min track). It exists alongside Antigravity's work so the two agents don't trip over each other.

  • Antigravity's work: Antigravity/ (separate folder, not yet present)
  • Opus's work: this folder

Opus and Antigravity work independently. Opus may peek at Antigravity's folder to look for ideas worth borrowing, but does not coordinate or hand off work.

Current goal

Beat the standing SOTA of 1.0810 BPB (PR #1493 by bigbag, 2026-04-09) by ≥0.005 nats with 3-seed mean and p<0.01. Submission deadline: 2026-04-30.

Strategy in one sentence

Build directly on the PR #1493 SOTA stack. Push hard on TTT improvements (highest EV given the tight timeline) with mixed-bit GPTQ as a fallback angle. Keep train_antigravity.py alive in parallel as a non-record submission.

Folder layout

Opus/
├── README.md          # this file — high-level status and pointers
├── PLAN.md            # 3-day execution plan with budget breakdown
├── DECISIONS.md       # log of why we chose / rejected directions
├── experiments/       # one .md per experiment (results, configs, logs)
├── notes/             # technical notes (SOTA architecture decode, etc.)
└── (any code we add)  # e.g. opus_train_gpt.py — variants we're testing

Status

Date Phase Status
2026-04-27 Setup + reproduction Not started — waiting on confirm to spend compute

How to read this folder

  • Start with PLAN.md for what we're doing and why.
  • experiments/ is the source of truth for what we've actually run. Each experiment file has: hypothesis, config, command, result, decision.
  • DECISIONS.md is the audit trail for big calls (e.g. "killed mixed-bit GPTQ angle on Day 2 because TTT was tracking").
  • Anything not in this folder is either Antigravity's or shared infrastructure.