---
tags: [agentic-ptb, opus-high-v2, dataset]
---

# opus-high-v2 — training corpora

The SFT corpora this cell built and trained on. **All four produced regressions**; they are
published so the negative result is reproducible, not as recommended training data.

| dir | source | used by | outcome |
|---|---|---|---|
| `sft-pisessions-long/` | `MaxDevv/real-pi-coding-agent-traces-sessions` | `sft-v1` | regressed |
| `sft-oh/` | `nvidia/SWE-Hero-openhands-trajectories` | `sft-v2` | regressed |
| `sft-sst/` | `SWE-bench/SWE-smith-trajectories`, `resolved == true` | `sft-sst`, `sft-sstB` | −11.9pp, n=285, p<0.001 |
| `sft-mix2/` | mixture of the above | — | regressed |
| `ei-r1/` | expert-iteration collection | — | abandoned on sizing grounds |

Run record: [`agentic-ptb/opus-high-v2-record`](https://huggingface.co/agentic-ptb/opus-high-v2-record).