diff --git a/src/analyst/benchmark-implementation.ts b/src/analyst/benchmark-implementation.ts
index a66c1805..1be6e472 100644
--- a/src/analyst/benchmark-implementation.ts
+++ b/src/analyst/benchmark-implementation.ts
@@ -139,7 +139,7 @@ export const ANALYST_BENCHMARK_IMPLEMENTATION_FILES = Object.freeze([
 ])
 
 export const ANALYST_BENCHMARK_IMPLEMENTATION_SHA256 =
-  'fffa485899aa8f8e95213f56fb2aaefd2a244874165cee4e7dc09b81b872b94e'
+  '320fe06f563021515f9b1ed73a4d1fd555266f29b3c32a8cecd2fc13679e6655'
 
 export function analystBenchmarkImplementationDigest() {
   return ANALYST_BENCHMARK_IMPLEMENTATION_SHA256
diff --git a/src/judge-families.ts b/src/judge-families.ts
index dd312cd1..4eb8c5cc 100644
--- a/src/judge-families.ts
+++ b/src/judge-families.ts
@@ -56,6 +56,10 @@ const PROVIDER_PREFIX: Record<string, JudgeFamily> = {
 /** Fallback model-name patterns when there's no recognised provider prefix. */
 const NAME_PATTERNS: Array<[RegExp, JudgeFamily]> = [
   [/claude/i, 'anthropic'],
+  // Anthropic's own bare aliases (`claude --model sonnet|opus|haiku`). A run that requested `sonnet`
+  // and was served claude-sonnet-5 is an alias resolution, not a cross-family substitution: without
+  // this row the alias classified as `unknown` and assertServedModel refused the pair.
+  [/^(?:sonnet|opus|haiku)(?:[-@\s]|$)/i, 'anthropic'],
   [/\b(gpt|davinci|babbage)\b|^o[134]\b|[-/]o[134]\b|gpt-/i, 'openai'],
   [/gemini|palm|gemma|bison/i, 'google'],
   [/llama/i, 'meta'],
diff --git a/tests/audit-primitives.test.ts b/tests/audit-primitives.test.ts
index 1a8ec035..db56703b 100644
--- a/tests/audit-primitives.test.ts
+++ b/tests/audit-primitives.test.ts
@@ -62,6 +62,11 @@ describe('judgeFamily + assertCrossFamily', () => {
     expect(judgeFamily('anthropic/claude-opus-4-5-20251101')).toBe('anthropic')
     expect(judgeFamily('openai/gpt-4o')).toBe('openai')
     expect(judgeFamily('claude-sonnet-4-6@2026-05-08')).toBe('anthropic')
+    // Anthropic's bare CLI aliases: an alias resolution is within-family, never a cross-family substitution.
+    expect(judgeFamily('sonnet')).toBe('anthropic')
+    expect(judgeFamily('opus')).toBe('anthropic')
+    expect(judgeFamily('haiku@2026-09-03')).toBe('anthropic')
+    expect(judgeFamily('sonnetful-model')).toBe('unknown')
     expect(judgeFamily('gemini-2.5-pro')).toBe('google')
     expect(judgeFamily('meta-llama/llama-3.3-70b')).toBe('meta')
     expect(judgeFamily('some-internal-model')).toBe('unknown')