anthropic/claude-fable-5 · Model identity and integrity report
Last updated：Jul 30, 2026, 1:09 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)
924 runs · 428 hosts · 473 anomalies
Family-fingerprint consistency
anthropic 813 ██████████████████████░░░ 88% (expected) unknown 86 ██░░░░░░░░░░░░░░░░░░░░░░░ 9% (suspicious) openai 18 █░░░░░░░░░░░░░░░░░░░░░░░░ 2% (suspicious) qwen 3 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious) zhipu 1 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious) xai 1 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious) google 1 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious) deepseek 1 ░░░░░░░░░░░░░░░░░░░░░░░░░ 0% (suspicious)
Observed V3 sub-model mapping
→ abstain 282 (31%) — low confidence → anthropic/claude-fable-5 272 (29%) ✓ correct sim=0.95 → unknown 160 (17%) ⚠ mismatch → anthropic/claude-opus-4.7 82 ( 9%) ⚠ mismatch sim=0.77 → anthropic/claude-sonnet-4.6 48 ( 5%) ⚠ mismatch sim=0.72 → anthropic/claude-opus-4.5 46 ( 5%) ⚠ mismatch sim=0.67 → anthropic/claude-sonnet-4.5 15 ( 2%) ⚠ mismatch sim=0.63 → anthropic/claude-opus-4.6 7 ( 1%) ⚠ mismatch sim=0.83 → anthropic/claude-sonnet-5 5 ( 1%) ⚠ mismatch sim=0.76 → anthropic/claude-haiku-4.5 3 ( 0%) ⚠ mismatch sim=0.70 → anthropic/claude-opus-4.8 2 ( 0%) ⚠ mismatch sim=0.83 → qwen/qwen3-next-80b-a3b-instruct 1 ( 0%) ⚠ mismatch sim=0.66 → openai/gpt-5.4 1 ( 0%) ⚠ mismatch sim=0.84
Capability score distribution (auxiliary)
0-49 █████████████░░░░░░░░░░░░ 467 50-69 █░░░░░░░░░░░░░░░░░░░░░░░░ 33 70-89 ███████░░░░░░░░░░░░░░░░░░ 247 90-100 █████░░░░░░░░░░░░░░░░░░░░ 177
Host integrity ranking
| Host | Runs | Average score | Family match | Most common V3 match |
|---|---|---|---|---|
| https://api.a6api.com/v1 | 26 | 27 | 100% | anthropic/claude-opus-4.5 (6) |
| https://cc-vibe.com/v1 | 19 | 22 | 100% | anthropic/claude-sonnet-4.5 (3) |
| https://a6api.com/v1 | 14 | 32 | 100% | anthropic/claude-opus-4.5 (3) |
| https://bearlab.ai/v1 | 13 | 14 | 92% | anthropic/claude-sonnet-4.6 (1) |
| https://max20.cn/v1 | 13 | 54 | 100% | anthropic/claude-opus-4.7 (7) |
| https://opusrelay.com/v1 | 13 | 32 | 15% | — |
| https://api.ethancode.xyz/v1 | 13 | 54 | 77% | anthropic/claude-opus-4.7 (3) |
| https://api.xinnanz.cn/v1 | 12 | 36 | 100% | anthropic/claude-fable-5 (3) |
| https://apiclaude.cc/v1 | 11 | 41 | 82% | anthropic/claude-opus-4.5 (2) |
| https://www.fuxingapi.com/v1 | 11 | 82 | 100% | anthropic/claude-opus-4.7 (4) |
| https://chegnzi.top/v1 | 10 | 69 | 100% | anthropic/claude-fable-5 (2) |
| https://www.findcg.com/v1 | 10 | 0 | 100% | anthropic/claude-fable-5 (3) |
| https://api.biuapi.com/v1 | 9 | 82 | 100% | anthropic/claude-fable-5 (3) |
| https://api.tokeneasy.com.cn/v1 | 8 | 62 | 88% | anthropic/claude-fable-5 (3) |
| https://ai.venlacy.com/v1 | 8 | 75 | 88% | anthropic/claude-opus-4.7 (1) |
| https://apipros.cc/v1 | 8 | 0 | 75% | anthropic/claude-fable-5 (1) |
| https://api.ooapi.cc/v1 | 7 | 46 | 100% | anthropic/claude-sonnet-4.5 (1) |
| https://ai.zyyun.xyz/v1 | 7 | 71 | 86% | anthropic/claude-fable-5 (3) |
| https://cdn.coderelay.cn/v1 | 7 | 82 | 86% | anthropic/claude-fable-5 (2) |
| https://api.shuaiapi.com/v1 | 7 | 39 | 100% | anthropic/claude-fable-5 (7) |
| https://ycyapi.cn/v1 | 7 | 37 | 100% | anthropic/claude-haiku-4.5 (1) |
| https://apijing.com/v1 | 6 | 75 | 100% | anthropic/claude-fable-5 (6) |
| https://edge.bearlab.ai/v1 | 6 | 75 | 100% | anthropic/claude-fable-5 (6) |
| https://llm-api.vxai.io/v1 | 6 | 45 | 100% | anthropic/claude-sonnet-4.6 (4) |
| https://sub.aspirinz.cc/v1 | 6 | 83 | 83% | anthropic/claude-fable-5 (5) |
Recent anomalies
http://cn-hk-bgp-4.ofalias.net:30722/v1Jul 30, 2026, 11:04 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://downstream.jbbtoken.cn/v1Jul 30, 2026, 10:40 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-sonnet-4.5 (sim 0.61)
- Verdict
- Sub-model downgrade
https://api.a6api.com/v1Jul 30, 2026, 6:41 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://api.teamorouter.com/v1Jul 30, 2026, 3:11 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.67)
- Verdict
- Sub-model downgrade
https://api.a6api.com/v1Jul 29, 2026, 3:20 PM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-sonnet-4.5 (sim 0.60)
- Verdict
- Sub-model downgrade
https://ppsubapi.com/v1Jul 29, 2026, 10:29 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.6 (sim 0.84)
- Verdict
- Sub-model downgrade
https://kiro.apiapipp.com/v1Jul 29, 2026, 10:23 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- zhipu
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://kiro.apiapipp.com/v1Jul 29, 2026, 10:21 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- xai
- V3 best match
- —
- Verdict
- Family mismatch
https://stonerollai.com/v1Jul 29, 2026, 9:26 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-sonnet-4.6 (sim 0.70)
- Verdict
- Sub-model downgrade
https://www.fouradd.cn/v1Jul 29, 2026, 9:09 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.68)
- Verdict
- Sub-model downgrade
https://sub2api.vibelearning.top/v1Jul 29, 2026, 8:54 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.7 (sim 0.71)
- Verdict
- Sub-model downgrade
https://zg.baby/v1Jul 29, 2026, 7:41 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://api.amanai.dev/v1Jul 29, 2026, 5:44 AM
- Self-claimed model
- amanai/claude-fable-5
- V2 predicted family
- qwen
- V3 best match
- qwen/qwen3-next-80b-a3b-instruct (sim 0.66)
- Verdict
- Full swap
https://api.amanai.dev/v1Jul 29, 2026, 5:35 AM
- Self-claimed model
- amanai/claude-fable-5
- V2 predicted family
- qwen
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://maylily.xyz/v1Jul 29, 2026, 2:55 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.5 (sim 0.75)
- Verdict
- Sub-model downgrade
https://bearlab.ai/v1Jul 29, 2026, 1:55 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://ai.dyc.im/v1Jul 29, 2026, 12:55 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- anthropic/claude-opus-4.7 (sim 0.72)
- Verdict
- Sub-model downgrade
https://ai.dyc.im/v1Jul 29, 2026, 12:10 AM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://ai.dyc.im/v1Jul 28, 2026, 10:17 PM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
https://cc-vibe.com/v1Jul 28, 2026, 5:16 PM
- Self-claimed model
- claude-fable-5
- V2 predicted family
- anthropic
- V3 best match
- —
- Verdict
- V3 low confidence · Abstain
Methodology
BazaarLink Probe combines a Bayesian V2 family classifier across nine fingerprint categories with V3 sub-model references to verify endpoints claiming anthropic/claude-fable-5. Low family consistency, a different V3 match, or divergence from selfClaim is flagged as anomalous. BazaarLink Probe home.