anthropic/claude-sonnet-5 · Model identity and integrity report
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)
218 runs · 121 hosts · 166 anomalies
Family-fingerprint consistency
anthropic 194 ██████████████████████░░░ 89% (expected) openai 12 ██░░░░░░░░░░░░░░░░░░░░░░░ 6% (suspicious) unknown 10 █░░░░░░░░░░░░░░░░░░░░░░░░ 5% (suspicious) zhipu 1 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious) deepseek 1 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious)
Observed V3 sub-model mapping
→ abstain 88 (40%) — low confidence → anthropic/claude-opus-4.5 39 (18%) ⚠ mismatch sim=0.77 → anthropic/claude-sonnet-5 27 (12%) ✓ correct sim=0.84 → anthropic/claude-opus-4.7 22 (10%) ⚠ mismatch sim=0.74 → unknown 13 ( 6%) ⚠ mismatch → anthropic/claude-fable-5 11 ( 5%) ⚠ mismatch sim=0.93 → anthropic/claude-sonnet-4.6 9 ( 4%) ⚠ mismatch sim=0.71 → anthropic/claude-sonnet-4.5 6 ( 3%) ⚠ mismatch sim=0.64 → anthropic/claude-haiku-4.5 2 ( 1%) ⚠ mismatch sim=0.71 → openai/gpt-5.4 1 ( 0%) ⚠ mismatch sim=0.87
Capability score distribution (auxiliary)
0-49 ███████████████░░░░░░░░░░ 127 50-69 █░░░░░░░░░░░░░░░░░░░░░░░░ 4 70-89 ████░░░░░░░░░░░░░░░░░░░░░ 37 90-100 ██████░░░░░░░░░░░░░░░░░░░ 50
Host integrity ranking
| Host | Runs | Average score | Family match | Most common V3 match |
|---|---|---|---|---|
| https://api.tokeneasy.com.cn/v1 | 8 | 69 | 100% | anthropic/claude-opus-4.5 (2) |
| https://cc-vibe.com/v1 | 8 | 0 | 88% | anthropic/claude-opus-4.5 (1) |
| https://api.a6api.com/v1 | 7 | 25 | 86% | anthropic/claude-opus-4.5 (2) |
| https://turbo-api.com/v1 | 7 | 96 | 100% | anthropic/claude-sonnet-5 (6) |
| https://a6api.com/v1 | 6 | 14 | 100% | anthropic/claude-opus-4.5 (1) |
| https://www.yiyuantoken.com/v1 | 6 | 62 | 100% | anthropic/claude-opus-4.5 (4) |
| https://api.cosmoshub.tech/v1 | 5 | 0 | 100% | anthropic/claude-opus-4.5 (5) |
| https://xixiapi.cc/v1 | 5 | 0 | 80% | anthropic/claude-opus-4.7 (1) |
| https://ai.furry.vg/v1 | 5 | 18 | 100% | anthropic/claude-opus-4.7 (2) |
| https://opusrelay.com/v1 | 5 | 77 | 20% | — |
| https://max20.cn/v1 | 5 | 37 | 100% | anthropic/claude-sonnet-5 (5) |
| https://www.cun.ai/v1 | 4 | 21 | 50% | anthropic/claude-sonnet-5 (1) |
| https://api.180txt.cn/v1 | 4 | 0 | 100% | anthropic/claude-opus-4.5 (1) |
| https://openlimits.app/v1 | 4 | 45 | 100% | anthropic/claude-opus-4.7 (1) |
| https://hk.xn--vduyey89e.com/v1 | 3 | 89 | 100% | anthropic/claude-sonnet-4.5 (1) |
| https://aicanapi.com/v1 | 3 | 0 | 67% | — |
| https://bestoken.ai/v1 | 3 | 90 | 100% | anthropic/claude-opus-4.7 (3) |
| https://api.gpt2share.com/v1 | 3 | 95 | 100% | anthropic/claude-sonnet-5 (3) |
| https://mdkj.lol/v1 | 3 | 30 | 100% | — |
| https://ppsubapi.com/v1 | 3 | 85 | 100% | anthropic/claude-opus-4.5 (1) |
| https://77code.fun/v1 | 2 | 44 | 100% | anthropic/claude-opus-4.7 (2) |
| https://beeapi.ai/v1 | 2 | 0 | 100% | anthropic/claude-sonnet-4.6 (1) |
| https://apiart.world/v1 | 2 | 93 | 100% | anthropic/claude-fable-5 (2) |
| https://shiteru.id/v1 | 2 | 0 | 100% | anthropic/claude-opus-4.5 (2) |
| https://seekai.cc/v1 | 2 | 0 | 0% | — |
Recent anomalies
https://kuai.dmxcode.com/v1Jul 30, 2026, 12:35 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://api.duckcoding.ai/v1Jul 29, 2026, 1:24 PM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- openai
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://77code.fun/v1Jul 28, 2026, 3:03 PM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.7 (sim 0.82)
- Verdict
- Sub-model downgrade
https://77code.fun/v1Jul 28, 2026, 2:59 PM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.7 (sim 0.87)
- Verdict
- Sub-model downgrade
https://api.cosmoshub.tech/v1Jul 28, 2026, 2:57 PM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.70)
- Verdict
- Sub-model downgrade
https://api.tokeneasy.com.cn/v1Jul 28, 2026, 7:44 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.70)
- Verdict
- Sub-model downgrade
https://api.tokeneasy.com.cn/v1Jul 28, 2026, 2:47 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-fable-5 (sim 1.00)
- Verdict
- Sub-model downgrade
https://api.tokeneasy.com.cn/v1Jul 28, 2026, 2:30 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-fable-5 (sim 1.00)
- Verdict
- Sub-model downgrade
https://beeapi.ai/v1Jul 27, 2026, 1:02 PM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-sonnet-4.6 (sim 0.82)
- Verdict
- Sub-model downgrade
https://api.cosmoshub.tech/v1Jul 27, 2026, 11:51 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.72)
- Verdict
- Sub-model downgrade
https://api.tokeneasy.com.cn/v1Jul 27, 2026, 8:38 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://api.tokeneasy.com.cn/v1Jul 27, 2026, 8:35 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.7 (sim 0.70)
- Verdict
- Sub-model downgrade
https://api.tokeneasy.com.cn/v1Jul 27, 2026, 7:25 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.72)
- Verdict
- Sub-model downgrade
https://api.freeaiapikey.com/v1Jul 26, 2026, 4:35 PM
- Self-claimed model
- anthropic/claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://api.qiuqiutoken.com/v1Jul 26, 2026, 3:49 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 1.00)
- Verdict
- Sub-model downgrade
https://zizhucan.xyz/v1Jul 25, 2026, 4:17 PM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://api.a6api.com/v1Jul 25, 2026, 11:00 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.70)
- Verdict
- Sub-model downgrade
https://apiart.world/v1Jul 25, 2026, 8:30 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-fable-5 (sim 0.85)
- Verdict
- Sub-model downgrade
https://apiart.world/v1Jul 25, 2026, 8:21 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-fable-5 (sim 1.00)
- Verdict
- Sub-model downgrade
https://shiteru.id/v1Jul 25, 2026, 5:02 AM
- Self-claimed model
- claude-sonnet-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.93)
- 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-5. Low family consistency, a different V3 match, or divergence from selfClaim is flagged as anomalous. BazaarLink Probe home.