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

Last updated：Sep 1, 2026, 7:57 PM · Data window: past 90 days

Measured results (90 days)

1 runs · 1 hosts · 1 anomalies

Family-fingerprint consistency

  anthropic        1  █████████████████████████  100% (expected)

Observed V3 sub-model mapping

  → abstain                                  1 (100%) — low confidence

Capability score distribution (auxiliary)

  0-49     █████████████████████████    1
  50-69    ░░░░░░░░░░░░░░░░░░░░░░░░░    0
  70-89    ░░░░░░░░░░░░░░░░░░░░░░░░░    0
  90-100   ░░░░░░░░░░░░░░░░░░░░░░░░░    0

Host integrity ranking

Host	Runs	Average score	Family match	Most common V3 match
https://api.rewind.ai/v1	1	0	100%	—

Recent anomalies

https://api.rewind.ai/v1Aug 26, 2026, 7:04 AM

Self-claimed model: claude-opus-5-fast
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-opus-5-fast. Low family consistency, a different V3 match, or divergence from selfClaim is flagged as anomalous. BazaarLink Probe home.

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