Files
zen-router/training/extract_local_sessions.py
zeekay 7f466d8fc9 zen-router: scaled + privacy-safe run on local+agentic corpus
- catalog.yaml: 28 routable models (add claude-opus-4-5/4-1, sonnet-4-5,
  minimax-m2 from the agentic corpus; all gateway-priced). Route head 24->28.
- session_common.py: shared session-extraction (DRY) -- task heuristic, catalog
  mapping with dated-id normalization, user/assistant pairing.
- extract_agentic_dataset.py: stream zen-agentic-dataset-private, pull embedded
  Claude transcripts out of assistant turns, stratified cap. 9.9B-token corpus
  yields ~4.4k real routing rows (rest is synthetic identity SFT + git history).
- extract_local_sessions.py: refactored onto session_common.
- sft.py: --freeze-backbone -> precompute pooled embeddings once, train the 3
  linear heads only; publish heads-only (1.2MB) so private data cannot be
  memorized. Backbone stays public zen-nano-0.6b.
- eval_routing.py: strict=False load (heads-only), device-aware, latency + dist.
- README Measured: Run A (local, full) vs Run B (combined, frozen, published)
  side by side. Run B route_acc 0.791 = +25.8pts over majority, 5/28 models
  emitted -- genuine multi-model discrimination; task_acc 0.723. All caveats.

HF: https://huggingface.co/zenlm/zen-router (heads-only weights + README).
2026-07-07 17:44:37 -07:00

84 lines
3.3 KiB
Python

"""Build zen-router eval rows from THIS machine's real AI-assistant usage.
Sources
~/.claude/projects/**/*.jsonl Claude Code sessions
~/.codex/sessions/**/*.jsonl Codex sessions (response_item messages)
Output (one JSON object per line), the eval-row shape build_dataset.py consumes:
{prompt, model, quality, cost, latency_ms, task}
quality -- PROXY, fixed 1.0 (only the served model is observed)
cost -- (input+output tokens)/1000 * catalog cost_per_1k
latency_ms -- 0 (not recorded in the logs)
task -- keyword heuristic, a port of hanzo-router's Heuristic::classify
Model ids are kept REAL and mapped 1:1 to catalog ids. Shared pairing/mapping
logic lives in session_common.py (also used by extract_agentic_dataset.py).
"""
from __future__ import annotations
import argparse
import json
from collections import Counter
from pathlib import Path
from session_common import iter_claude_rows, load_catalog, parse_jsonl_records, resolve, user_text
def parse_claude_file(path: Path, catalog, out: list) -> None:
out.extend(iter_claude_rows(parse_jsonl_records(path.open(errors="ignore")), catalog))
def parse_codex_file(path: Path, catalog, out: list) -> None:
"""Codex logs: response_item messages; model from turn_context/session_meta."""
pending, model = None, None
for d in parse_jsonl_records(path.open(errors="ignore")):
p = d.get("payload") or {}
if isinstance(p, dict) and p.get("model"):
model = resolve(p["model"], catalog) or model
if d.get("type") != "response_item" or not isinstance(p, dict) or p.get("type") != "message":
continue
role = p.get("role")
if role == "user":
txt = user_text(p.get("content"))
if txt:
pending = txt
elif role == "assistant" and pending is not None and model:
approx = max(1, len(pending) // 4)
from session_common import classify
out.append({"prompt": pending[:4000], "model": model, "quality": 1.0,
"cost": 0.0, "latency_ms": 0, "task": classify(pending, approx)})
pending = None
def main() -> None:
ap = argparse.ArgumentParser()
ap.add_argument("--claude", type=Path, default=Path.home() / ".claude/projects")
ap.add_argument("--codex", type=Path, default=Path.home() / ".codex/sessions")
ap.add_argument("--catalog", type=Path, default=Path("training/catalog.yaml"))
ap.add_argument("--out", type=Path, default=Path("data/evals.jsonl"))
ap.add_argument("--max-rows", type=int, default=40000)
args = ap.parse_args()
catalog = load_catalog(args.catalog)
rows: list = []
for f in sorted(args.codex.rglob("*.jsonl")):
parse_codex_file(f, catalog, rows)
n_codex = len(rows)
for f in sorted(args.claude.rglob("*.jsonl")):
if len(rows) >= args.max_rows:
break
parse_claude_file(f, catalog, rows)
args.out.parent.mkdir(parents=True, exist_ok=True)
with args.out.open("w") as fh:
for r in rows:
fh.write(json.dumps(r) + "\n")
print(f"wrote {len(rows)} eval rows -> {args.out} (codex={n_codex}, claude={len(rows) - n_codex})")
print("by model:", dict(Counter(r["model"] for r in rows).most_common()))
print("by task :", dict(Counter(r["task"] for r in rows).most_common()))
if __name__ == "__main__":
main()