openai/gpt-4.1-nano · Model identity and integrity report
Last updated：Jul 30, 2026, 11:33 AM · Data window: past 90 days
Measured results (90 days)
5 runs · 1 hosts · 5 anomalies
Family-fingerprint consistency
openai 5 █████████████████████████ 100% (expected)
Observed V3 sub-model mapping
→ openai/gpt-4o 5 (100%) ⚠ mismatch sim=0.87
Capability score distribution (auxiliary)
0-49 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0 50-69 ███████████████░░░░░░░░░░ 3 70-89 ██████████░░░░░░░░░░░░░░░ 2 90-100 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0
Host integrity ranking
| Host | Runs | Average score | Family match | Most common V3 match |
|---|---|---|---|---|
| https://www.moyu.info/v1 | 5 | 68 | 100% | openai/gpt-4o (5) |
Recent anomalies
https://www.moyu.info/v1May 23, 2026, 8:39 AM
- Self-claimed model
- gpt-4.1-nano
- V2 predicted family
- openai
- V3 best match
- openai/gpt-4o (sim 0.87)
- Verdict
- Sub-model downgrade
https://www.moyu.info/v1May 20, 2026, 3:50 AM
- Self-claimed model
- gpt-4.1-nano
- V2 predicted family
- openai
- V3 best match
- openai/gpt-4o (sim 0.87)
- Verdict
- Sub-model downgrade
https://www.moyu.info/v1May 20, 2026, 3:50 AM
- Self-claimed model
- gpt-4.1-nano
- V2 predicted family
- openai
- V3 best match
- openai/gpt-4o (sim 0.87)
- Verdict
- Sub-model downgrade
https://www.moyu.info/v1May 20, 2026, 3:50 AM
- Self-claimed model
- gpt-4.1-nano
- V2 predicted family
- openai
- V3 best match
- openai/gpt-4o (sim 0.87)
- Verdict
- Sub-model downgrade
https://www.moyu.info/v1May 20, 2026, 3:48 AM
- Self-claimed model
- gpt-4.1-nano
- V2 predicted family
- openai
- V3 best match
- openai/gpt-4o (sim 0.87)
- Verdict
- Sub-model downgrade
Methodology
BazaarLink Probe combines a Bayesian V2 family classifier across nine fingerprint categories with V3 sub-model references to verify endpoints claiming openai/gpt-4.1-nano. Low family consistency, a different V3 match, or divergence from selfClaim is flagged as anomalous. BazaarLink Probe home.