BCCard/Qwen2.5-Coder-7B-Instruct-FP8-Dynamic warn
claims base: Qwen/Qwen2.5-7B-Instruct · chat template: present · view on Hugging Face ↗
Scan coverage
Ingot runs three batteries against a model. What each one checks →
| Battery | Looks at | Status |
|---|---|---|
| Static battery | Metadata & packaging | complete 2026-08-21 |
| Weights battery | Weights forensics — no GPU, no download | complete 2026-08-21152,064-token embedding scanned · 7941 undertrained · lineage inconsistent |
| Behavioral battery | Live-inference differentials | not run |
Findings
Scanned 2026-08-21 · published from a community scan.
medium Undertrained (glitch) token surface in vocabulary
Embedding-norm scan flagged 7941 undertrained tokens (norm < 0.3× the vocabulary median of 0.946), including 149 plain-ASCII strings that can appear in ordinary input as identifiers — e.g. "PostalCodesNL", "$PostalCodesNL", "<unk>", "(stypy", "TokenNameIdentifier", "thuisontvangst", "Cumhurba", "sexkontakte". In models where this class was tested behaviorally, such tokens silently rewrote user input into confident, schema-valid, wrong output. These are candidates from the weights alone; behavioral confirmation requires the behavioral battery.
How to fixruntime guardweight-level
Keep the affected token strings out of the model's input — the scan-derived runtime guard carries this model's exact blocklist.
- Fetch this model's guard artifact (`/api/v1/guard/<owner>/<model>`): the confirmed corrupting tokens and the low-norm candidate list, derived from the published scan.
- Screen inbound text with it (the `@ingotai/guard` package is a reference implementation) and route flagged records to a different model or human review — verbatim-copy tasks on flagged strings are the failure mode.
- The underlying cause is undertrained embeddings in the weights; a true fix is weight-level (continued pretraining on the affected tokens) — that is not a patch, it's a training job.
low Weights diverge from claimed parent Qwen/Qwen2.5-7B-Instruct
This model declares Qwen/Qwen2.5-7B-Instruct as its base (relation: unspecified), but mean cosine similarity of 64 sampled token-embedding rows against that parent is only 0.165 (true finetunes, merges, and quantizations sit above 0.8; independently trained weights sit near 0). Either the lineage label is wrong, or the model was so heavily re-trained, pruned, or distilled that the parent's properties (safety posture, evaluated behavior, licensing basis) should not be assumed to carry over. Verify provenance before relying on the parent's reputation.
How to fix
Fix or verify the `base_model` declaration so lineage checks can run.
- If you own the repo: correct the `base_model` field in the model card metadata to the real, public parent.
- If you don't: identify the true parent (config architecture + weight shapes narrow it fast) and re-scan with that lineage in mind.
Remediation guidance addresses the documented findings only. It is evidence-driven repair, not a safety certification of the model.
Fingerprint
The durable profile of this model: measured weights-and-metadata facts, rebuilt on every scan and battery run. Updated 2026-08-21.
| architecture | qwen2 · 28 layers · 3584-dim |
| parameters | 7617.0M |
| vocabulary | 152,064 tokens |
| license | apache-2.0 |
| serialization | safetensors |
| chat template | present · sha256:cd8e9439f0570856 |
| claimed lineage | Qwen/Qwen2.5-7B-Instruct |
| lineage verified | inconsistent vs Qwen/Qwen2.5-7B-Instruct — embedding-row cosine 0.165 |
| glitch-token surface | 7,941 undertrained candidates, 149 plain-ASCII |
Full measured fingerprint
| architectures | Qwen2ForCausalLM |
| library | transformers |
| pipeline | text-generation |
| repo files | 14 |
| revision | b6d83126513d |
| HF snapshot | 340 downloads · 0 likes · updated 2025-06-23 · captured 2026-08-21 |
| embedding tensor | model.embed_tokens.weight · BF16 · 152,064×3584 |
| embedding norms | median 0.9461 · mean 0.8603 |
| lineage check | inconsistent — cosine 0.1654 over 64 sampled rows vs Qwen/Qwen2.5-7B-Instruct |
| glitch-token samples | "PostalCodesNL", "$PostalCodesNL", "<unk>", "(stypy", "TokenNameIdentifier", "thuisontvangst", "Cumhurba", "sexkontakte", "sextreffen", "prostituerte", "wannonce", "NdrFc" |
Battery runs
The run trace behind the findings above: every deep-battery job for this model, with what each run measured or why it failed. Findings are only as good as the runs that produced them.
| battery | status | queued | duration | attempts |
|---|---|---|---|---|
| weights | complete | 2026-08-21 05:15 | 2m | 1 |
weights run 2026-08-21 — measurements
| probes run | glitch-norm-scan, lineage-norm-correlation |
| embedding tensor | model.embed_tokens.weight · BF16 · 152,064×3584 |
| glitch surface | 7,941 undertrained, 149 plain-ASCII |
| lineage check | inconsistent — cosine 0.1654 over 64 rows vs Qwen/Qwen2.5-7B-Instruct |
Verdict badge
Ship the verdict in your README — it always shows the latest published analysis:
[](https://ingot.tools/models/BCCard/Qwen2.5-Coder-7B-Instruct-FP8-Dynamic)