anthropic/claude-sonnet-4.5 · Model identity and integrity report

Name: anthropic/claude-sonnet-4.5 relay integrity probe aggregate
Creator: BazaarLink

Last updated：Jul 30, 2026, 12:12 PM · Data window: past 90 days

Verification capability — fingerprint reference available

Family: anthropic
V3 sub-model reference: Available ✓
Checks: 知識截止 · 能力探針 · 拒絕模板 · 拒絕溫度參數
Family-fingerprint coverage: 60 weighted rules · 8 feature categories

Concrete reference answers, refusal templates, and individual signal weights are not published because disclosure would help spoofing endpoints evade detection.

Measured results (90 days)

24 runs · 12 hosts · 9 anomalies

Family-fingerprint consistency

  anthropic       23  ████████████████████████░   96% (expected)
  unknown          1  █░░░░░░░░░░░░░░░░░░░░░░░░    4% (suspicious)

Observed V3 sub-model mapping

  → anthropic/claude-sonnet-4.5             13 (54%) ✓ correct sim=0.97
  → abstain                                  5 (21%) — low confidence
  → anthropic/claude-opus-4.6                2 ( 8%) ⚠ mismatch sim=0.69
  → anthropic/claude-sonnet-4.6              2 ( 8%) ⚠ mismatch sim=0.74
  → unknown                                  2 ( 8%) ⚠ mismatch

Capability score distribution (auxiliary)

  0-49     ██████░░░░░░░░░░░░░░░░░░░    6
  50-69    ░░░░░░░░░░░░░░░░░░░░░░░░░    0
  70-89    ███████████████████░░░░░░   18
  90-100   ░░░░░░░░░░░░░░░░░░░░░░░░░    0

Host integrity ranking

Host	Runs	Average score	Family match	Most common V3 match
https://turbo-api.com/v1	5	84	100%	anthropic/claude-sonnet-4.5 (5)
https://www.moyu.info/v1	4	73	75%	anthropic/claude-sonnet-4.5 (2)
https://api.gpt2share.com/v1	3	86	100%	anthropic/claude-sonnet-4.5 (3)
https://ai.furry.vg/v1	3	26	100%	anthropic/claude-sonnet-4.6 (1)
https://api.cosmoshub.tech/v1	2	37	100%	anthropic/claude-sonnet-4.5 (1)
https://api.annyun.cn/v1	1	74	100%	anthropic/claude-opus-4.6 (1)
https://claude.llmhub.ltd/v1	1	85	100%	—
https://ai.hidepulsa.com/v1	1	0	100%	—
https://api.supxh.xin/v1	1	0	100%	—
https://api.quotaflow.ai/v1	1	86	100%	anthropic/claude-sonnet-4.5 (1)
https://api.bupaoluai.com/v1	1	74	100%	—
https://ai-api.burgeon.cn/v1	1	83	100%	anthropic/claude-sonnet-4.5 (1)

Recent anomalies

https://api.annyun.cn/v1Jul 25, 2026, 4:57 PM

Self-claimed model: claude-sonnet-4-5-20250929
V2 predicted family: anthropic
V3 best match: anthropic/claude-opus-4.6 (sim 0.67)
Verdict: Sub-model downgrade

https://claude.llmhub.ltd/v1Jul 25, 2026, 3:38 PM

Self-claimed model: claude-sonnet-4-5
V2 predicted family: anthropic
V3 best match: —
Verdict: V3 low confidence · Abstain

https://api.cosmoshub.tech/v1Jul 21, 2026, 4:08 PM

Self-claimed model: claude-sonnet-4.5
V2 predicted family: anthropic
V3 best match: —
Verdict: V3 low confidence · Abstain

https://ai.furry.vg/v1Jul 8, 2026, 4:16 AM

Self-claimed model: claude-sonnet-4-5-20250929
V2 predicted family: anthropic
V3 best match: anthropic/claude-sonnet-4.6 (sim 0.64)
Verdict: Sub-model downgrade

https://ai.furry.vg/v1Jul 8, 2026, 4:11 AM

Self-claimed model: claude-sonnet-4-5-20250929
V2 predicted family: anthropic
V3 best match: anthropic/claude-opus-4.6 (sim 0.72)
Verdict: Sub-model downgrade

https://ai.furry.vg/v1Jul 8, 2026, 3:10 AM

Self-claimed model: claude-sonnet-4-5-20250929
V2 predicted family: anthropic
V3 best match: —
Verdict: V3 low confidence · Abstain

https://ai.hidepulsa.com/v1Jul 6, 2026, 7:02 AM

Self-claimed model: kr/claude-sonnet-4.5
V2 predicted family: anthropic
V3 best match: —
Verdict: V3 low confidence · Abstain

https://api.bupaoluai.com/v1Jun 7, 2026, 9:15 AM

Self-claimed model: claude-sonnet-4.5
V2 predicted family: anthropic
V3 best match: —
Verdict: V3 low confidence · Abstain

https://www.moyu.info/v1May 19, 2026, 3:37 AM

Self-claimed model: claude-sonnet-4-5-20250929
V2 predicted family: anthropic
V3 best match: anthropic/claude-sonnet-4.6 (sim 0.85)
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 anthropic/claude-sonnet-4.5. Low family consistency, a different V3 match, or divergence from selfClaim is flagged as anomalous. BazaarLink Probe home.

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