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anthropic/claude-opus-5 · Model identity and integrity report

Last updatedJul 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)

306 runs · 150 hosts · 263 anomalies

Family-fingerprint consistency

  anthropic      292  ████████████████████████░   95% (expected)
  unknown         11  █░░░░░░░░░░░░░░░░░░░░░░░░    4% (suspicious)
  openai           3  ░░░░░░░░░░░░░░░░░░░░░░░░░    1% (suspicious)

Observed V3 sub-model mapping

  → abstain                                130 (42%) — low confidence
  → anthropic/claude-opus-4.7               62 (20%) ⚠ mismatch sim=0.80
  → anthropic/claude-opus-4.5               52 (17%) ⚠ mismatch sim=0.68
  → unknown                                 25 ( 8%) ⚠ mismatch
  → anthropic/claude-sonnet-4.6             14 ( 5%) ⚠ mismatch sim=0.72
  → anthropic/claude-opus-4.6               10 ( 3%) ⚠ mismatch sim=0.83
  → anthropic/claude-fable-5                 8 ( 3%) ⚠ mismatch sim=0.97
  → anthropic/claude-sonnet-4.5              4 ( 1%) ⚠ mismatch sim=0.62
  → anthropic/claude-haiku-4.5               1 ( 0%) ⚠ mismatch sim=0.64

Capability score distribution (auxiliary)

  0-49     ████████████░░░░░░░░░░░░░  143
  50-69    █░░░░░░░░░░░░░░░░░░░░░░░░   12
  70-89    ███████░░░░░░░░░░░░░░░░░░   79
  90-100   ██████░░░░░░░░░░░░░░░░░░░   72

Host integrity ranking

HostRunsAverage scoreFamily matchMost common V3 match
https://api.a6api.com/v11922100%anthropic/claude-opus-4.5 (5)
https://www.yiyuantoken.com/v1126292%anthropic/claude-opus-4.5 (2)
https://gorouter.app/v1960100%anthropic/claude-opus-4.5 (5)
https://rsxermu666.cn/v182388%anthropic/claude-opus-4.5 (2)
https://api.cosmoshub.tech/v180100%
https://niuniutoken.com/v1783100%anthropic/claude-opus-4.5 (5)
https://api.amanai.dev/v17086%anthropic/claude-opus-4.7 (3)
https://max20.cn/v1651100%anthropic/claude-opus-4.7 (3)
https://www.geek2api.com/v1571100%anthropic/claude-opus-4.5 (3)
https://claude.llmhub.ltd/v1420100%anthropic/claude-opus-4.7 (3)
https://duoyuanx.com/v1443100%
https://sub.100xlabs.space/v1458100%anthropic/claude-opus-4.5 (1)
https://www.jiekou.top/v1422100%anthropic/claude-opus-4.5 (3)
https://mdkj.lol/v140100%anthropic/claude-opus-4.6 (1)
https://api.unity2.ai/v1422100%anthropic/claude-opus-4.5 (2)
https://a6api.com/v1447100%anthropic/claude-opus-4.5 (2)
https://ai.caxagents.xyz/v140100%anthropic/claude-opus-4.7 (1)
https://downstream.jbbtoken.cn/v1386100%anthropic/claude-sonnet-4.5 (1)
https://de-ai.sectl.cn/v1389100%anthropic/claude-opus-4.6 (2)
https://api1.aisz.mom/v1391100%anthropic/claude-opus-4.7 (2)
https://deepkey.top/v1392100%anthropic/claude-opus-4.5 (1)
https://api.openllm.shop/v1389100%anthropic/claude-opus-4.5 (2)
https://aimoniker.top/v1387100%anthropic/claude-opus-4.5 (1)
https://api.kongji.org/v1333100%
https://api.xinnanz.cn/v1366100%anthropic/claude-fable-5 (1)

Recent anomalies

https://api.aijws.com/v1Jul 30, 2026, 12:10 PM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.70)
Verdict
Sub-model downgrade
https://api.a6api.com/v1Jul 30, 2026, 12:03 PM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.61)
Verdict
Sub-model downgrade
https://www.packyapi.com/v1Jul 30, 2026, 12:02 PM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.66)
Verdict
Sub-model downgrade
https://claude.llmhub.ltd/v1Jul 30, 2026, 11:53 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.7 (sim 0.80)
Verdict
Sub-model downgrade
https://api.squarefaceicon.org/v1Jul 30, 2026, 11:29 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-sonnet-4.6 (sim 0.80)
Verdict
Sub-model downgrade
https://aicodelink.top/v1Jul 30, 2026, 10:57 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
Verdict
V3 low confidence · Abstain
https://downstream.jbbtoken.cn/v1Jul 30, 2026, 10:46 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-sonnet-4.5 (sim 0.61)
Verdict
Sub-model downgrade
https://ai.xem8k5.top/v1Jul 30, 2026, 10:44 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
Verdict
V3 low confidence · Abstain
https://aiapi.market/v1Jul 30, 2026, 10:18 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.6 (sim 0.85)
Verdict
Sub-model downgrade
https://buzzai.cc/v1Jul 30, 2026, 10:14 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.7 (sim 0.90)
Verdict
Sub-model downgrade
http://154.36.172.121:3000/v1Jul 30, 2026, 10:04 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.63)
Verdict
Sub-model downgrade
https://api.kunkunout.com/v1Jul 30, 2026, 9:31 AM
Self-claimed model
claude-opus-5
V2 predicted family
openai
V3 best match
Verdict
V3 low confidence · Abstain
https://osss.ai/v1Jul 30, 2026, 9:27 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-sonnet-4.6 (sim 0.71)
Verdict
Sub-model downgrade
https://api123.top/v1Jul 30, 2026, 9:17 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
Verdict
V3 low confidence · Abstain
https://gorouter.app/v1Jul 30, 2026, 8:57 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.68)
Verdict
Sub-model downgrade
https://de-ai.sectl.cn/v1Jul 30, 2026, 8:51 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-haiku-4.5 (sim 0.64)
Verdict
Sub-model downgrade
https://api1.aisz.mom/v1Jul 30, 2026, 8:43 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.7 (sim 0.66)
Verdict
Sub-model downgrade
https://api.relaylink.cloud/v1Jul 30, 2026, 8:29 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.7 (sim 0.85)
Verdict
Sub-model downgrade
https://deepkey.top/v1Jul 30, 2026, 8:27 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.65)
Verdict
Sub-model downgrade
https://www.fastaitoken.com/v1Jul 30, 2026, 8:24 AM
Self-claimed model
claude-opus-5
V2 predicted family
anthropic
V3 best match
anthropic/claude-opus-4.5 (sim 0.71)
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-opus-5. Low family consistency, a different V3 match, or divergence from selfClaim is flagged as anomalous. BazaarLink Probe home.

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