> Canonical page: https://posttrainllm.com/report-cards/qwen3-4b-rest-fused PostTrainLLM fine-tune report card · schema v1 · compiler 1.0.0 # Qwen3-4B ReST Fused — not recorded The specialist package format does not record the owner goal that framed the run. **Target** Qwen3-4B ReST Fused **Base model** Qwen/Qwen3-4B-Instruct-2507 (bf16) **Candidate** qwen3-4b-rest-fused **Method** teacher-free ReST over checker-passing interleaved trajectories with a file-ops gold depth anchor **Compiled from** specialists/qwen3-4b-rest-fused (specialist-package) ## Decision Shipped Shipped for a named route only retain only as a routed file-operations specialist; reject as a general successor and do not use as the Pace default planner ### Routing constraint retain only as a routed file-operations specialist; reject as a general successor and do not use as the Pace default planner. Do not use for: Pace default planner without re-distillation and its product ship gate; unqualified broad general-agent claims. This candidate is safe only inside that envelope. It is not a general replacement for the base model. ### Verification status Not fully verified. This report does not claim a verified ship. Reasons: - Primary gate `file_ops_hard_gate` baseline is `historical`, not a current measurement. - Primary gate `file_ops_hard_gate` candidate is `historical`, not a current measurement. - Primary gate `file_ops_hard_gate` has no threshold value (state `missing`). - Primary gate `file_ops_hard_gate` has no passed value (state `missing`). - Frozen-eval identity is not recorded as a current measurement. - Train/eval overlap (leakage) was not checked with current evidence. **Failure reason** Not applicable **Failure-reason confidence** not-applicable **Lesson** Not recorded ### Next action — not recorded The specialist package format records no machine-readable next action. The release action lives in the public artifact registry (docs/factory/public-artifacts.md) as prose. ## Before and after This candidate does not present an unconditional win: out_of_domain_breadth failed. Target and regression gates are reported independently below. Every gate with baseline, candidate, derived delta, threshold, result, sample size, and frontier-ceiling evidence. **Gate** **Role** **Metric** **Baseline** **Candidate** **Delta** **Threshold** **Result** **n** **Frontier ceiling** **file_ops_hard_gate** primary file_ops_hard_gate 0.7500 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). 1.0000 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). 0.2500 derived Derived from at least one non-current value; inherits the weaker provenance of its inputs. — not recorded The specialist package format records no per-gate threshold. — not recorded The specialist package records no ship threshold for the primary gate, so a pass/fail result cannot be derived. 12 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). 1.0000 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). **out_of_domain_breadth** breadth out_of_domain_breadth 0.6667 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). 0.5556 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). -0.1111 derived Derived from at least one non-current value; inherits the weaker provenance of its inputs. — not recorded The specialist package format records no per-gate threshold. no derived No threshold was recorded. Derived as failing because the candidate scored below the baseline on a non-primary gate. 45 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). 0.9778 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). ### Eval identity Which suite produced each gate, how it was invoked, and whether it is frozen. **Gate** **Suite** **Command** **Date** **Frozen** **file_ops_hard_gate** file_ops_hard_gate — not recorded The specialist package format records no eval command, so this gate cannot be replayed from the report card alone. 2026-09-03 — not recorded The package does not record whether this suite is frozen. **out_of_domain_breadth** out_of_domain_breadth — not recorded The specialist package format records no eval command, so this gate cannot be replayed from the report card alone. 2026-09-03 — not recorded The package does not record whether this suite is frozen. ## Per-slice evidence No slice evidence was recorded for this candidate. ## Cost and performance Latency, memory, throughput, and training cost/time. Absent evidence is reported as not measured, never as zero. **Metric** **Value** **Source** **Latency** — not recorded Training duration and normalized per-request latency were not measured. Eval time is candidate depth plus breadth wall time; throughput and peak RSS are the candidate depth values. Per-suite values and raw receipt hashes are preserved in the published result. specialists/qwen3-4b-rest-fused/eval_report.json#performance.latency_ms **RAM / peak RSS** 7755.0781 MB historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). specialists/qwen3-4b-rest-fused/eval_report.json#performance.peak_rss_mb **Decode throughput** 13.3970 tok/s historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). specialists/qwen3-4b-rest-fused/eval_report.json#performance.tokens_per_second **Training time** — not recorded Training duration and normalized per-request latency were not measured. Eval time is candidate depth plus breadth wall time; throughput and peak RSS are the candidate depth values. Per-suite values and raw receipt hashes are preserved in the published result. specialists/qwen3-4b-rest-fused/eval_report.json#performance.training_time_seconds **Training cost** 0 USD historical Teacher-free local ReST iteration; no paid model API was used. Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). specialists/qwen3-4b-rest-fused/eval_report.json#performance.training_cost_usd **Eval time** 2011.1948 s historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). specialists/qwen3-4b-rest-fused/eval_report.json#performance.eval_time_seconds ## Eval validity and leakage Whether the benchmark is a trustworthy ruler: frontier ceiling, frozen-eval identity, and train/eval overlap. **Check** **Result** **Source** **Frontier ceiling** 1.0000 historical Recorded evidence quality: fresh-paired-frontier-qualified-result-with-hashed-raw-receipts. Imported from a committed specialist package rather than a canonical factory-run folder, so it lacks current run provenance (command, hashes, raw predictions). specialists/qwen3-4b-rest-fused/eval_report.json#scores[0].frontier **Frozen eval** — not recorded The package records no frozen held-out split identity. specialists/qwen3-4b-rest-fused/eval_report.json **Train/eval overlap** — not recorded No train/eval overlap check is recorded for this package. specialists/qwen3-4b-rest-fused/eval_report.json ### Known eval limitations - Values come from a committed specialist package, not a canonical factory-run folder: eval commands, dataset hashes, and raw predictions are unavailable for independent replay. ## Caveats - The fresh candidate won file-ops depth 12/12 versus 9/12 and removed all eight stock side effects. - The same candidate lost frontier-qualified breadth 25/45 versus stock 30/45, so the general-successor decision is reject. - The tracked result preserves raw receipt hashes; raw traces remain local and gitignored. - Pace requires a different intent envelope and product-specific ship gate. - Do not use for: Pace default planner without re-distillation and its product ship gate - Do not use for: unqualified broad general-agent claims ## Source evidence Every number above traces to one of these artifacts. Content hashes are recorded where the source file is committed. - [model card](https://github.com/PostTrainLLM/posttrainllm/blob/main/specialists/qwen3-4b-rest-fused/model_card.md) specialists/qwen3-4b-rest-fused/model_card.md · committed-package-file · sha256 6d5fefe5efcf76f6… - [eval report](https://github.com/PostTrainLLM/posttrainllm/blob/main/specialists/qwen3-4b-rest-fused/eval_report.json) specialists/qwen3-4b-rest-fused/eval_report.json · committed-package-file · sha256 e9924e33ad56792a… - [reproducibility lock](https://github.com/PostTrainLLM/posttrainllm/blob/main/specialists/qwen3-4b-rest-fused/tinygpt.lock.json) specialists/qwen3-4b-rest-fused/tinygpt.lock.json · committed-package-file · sha256 9a699a938a99ac6f… - [prompt contract](https://github.com/PostTrainLLM/posttrainllm/blob/main/specialists/qwen3-4b-rest-fused/prompt.md) specialists/qwen3-4b-rest-fused/prompt.md · committed-package-file · sha256 1571ecc23b132713… - [specialist registry entry](https://github.com/PostTrainLLM/posttrainllm/blob/main/specialists/registry.json) specialists/registry.json · committed-registry · sha256 f051c563b97adab7… - [recorded result source](https://github.com/PostTrainLLM/posttrainllm/blob/main/evals/verified-wins/rest-requalification-result-v1.json) evals/verified-wins/rest-requalification-result-v1.json · historical-record · sha256 368104c72ef06c66… · The document the legacy score was recorded in. - [published weights](https://huggingface.co/posttrainllm/qwen3-4b-rest-fused) hf://models/posttrainllm/qwen3-4b-rest-fused · external-artifact · Public weight location; not hashed by this compiler. ## How to read the evidence states **measured** Read directly from a source artifact for this candidate. **derived** Computed from other recorded values (for example a delta). **historical** Imported from a legacy record without current canonical provenance. Treat as weaker than a measurement. **skipped** Deliberately not run for this candidate. **not recorded** Evidence should exist but does not. No number is implied. **not applicable** The check does not apply to this candidate.