diff --git a/src/lib/analyzer.ts b/src/lib/analyzer.ts
index 47fb2b4..e840c4b 100644
--- a/src/lib/analyzer.ts
+++ b/src/lib/analyzer.ts
@@ -20,7 +20,7 @@ import {
   fallbackOverallScore,
 } from './scoring.js';
 import { AnalysisResponseSchema } from './schemas.js';
-import { MAX_COMPLETION_TOKENS, ANALYZER_OUTPUT_LIMIT } from './constants.js';
+import { MAX_COMPLETION_TOKENS, ANALYZER_OUTPUT_LIMIT, ANALYZER_TIMEOUT_MS } from './constants.js';
 import { withRateLimitRetry } from './retry.js';
 import { isAnthropicProvider, resolveProvider } from './providers.js';
 import { normalizeProvider } from './config.js';
@@ -501,6 +501,8 @@ async function callAnthropicAnalyzer(
       messages: [{ role: 'user', content: prompt }],
     }),
     'Analysis',
+    false,
+    ANALYZER_TIMEOUT_MS,
   );
   const textContent = response.content.find(c => c.type === 'text');
   if (!textContent || textContent.type !== 'text') {
@@ -524,6 +526,8 @@ async function callOpenAIAnalyzer(
       ],
     }),
     'Analysis',
+    false,
+    ANALYZER_TIMEOUT_MS,
   );
   const content = response.choices[0]?.message?.content;
   if (!content) {
diff --git a/src/lib/constants.ts b/src/lib/constants.ts
index 0c8f7a9..26f49db 100644
--- a/src/lib/constants.ts
+++ b/src/lib/constants.ts
@@ -14,6 +14,12 @@ export const DOCKER_WAIT_TIMEOUT = 30_000;
 export const DOCKER_POLL_INTERVAL = 2_000;
 export const DOCKER_STARTUP_POLL = 2_500;
 
+// Analyzer LLM call timeout. The analyzer prompt embeds a full attack chain
+// (up to 45 steps), which can be far larger than a benchmark step, so it needs
+// more headroom than the generic 120s API default. Long-running benchmarks were
+// losing KSM scores to "Analysis: timed out after 120s" on complex transcripts.
+export const ANALYZER_TIMEOUT_MS = 300_000;   // 5 minutes
+
 // Display
 export const VERBOSE_OUTPUT_PREVIEW = 2_000;
 
diff --git a/tests/unit/analyzer.test.ts b/tests/unit/analyzer.test.ts
index 578a4e7..afc67d7 100644
--- a/tests/unit/analyzer.test.ts
+++ b/tests/unit/analyzer.test.ts
@@ -339,3 +339,23 @@ describe('parseAnalysisResponse', () => {
     expect(result.strategy.overallScore).toBe(42);
   });
 });
+
+// =============================================================================
+// Analyzer timeout budget
+// =============================================================================
+
+describe('ANALYZER_TIMEOUT_MS', () => {
+  it('is larger than the generic API timeout (analyses embed full attack chains)', async () => {
+    const { ANALYZER_TIMEOUT_MS } = await import('../../src/lib/constants.js');
+    const { DEFAULT_API_TIMEOUT_MS } = await import('../../src/lib/retry.js');
+
+    expect(ANALYZER_TIMEOUT_MS).toBeGreaterThan(DEFAULT_API_TIMEOUT_MS);
+  });
+
+  it('is a positive finite number of milliseconds', async () => {
+    const { ANALYZER_TIMEOUT_MS } = await import('../../src/lib/constants.js');
+
+    expect(Number.isFinite(ANALYZER_TIMEOUT_MS)).toBe(true);
+    expect(ANALYZER_TIMEOUT_MS).toBeGreaterThan(0);
+  });
+});