chore(trace): update Claude pricing table

app/cli/internal/trace/claude/pricing.go

@@ -31,7 +31,7 @@ type modelPricing struct {
 	CacheWrite float64 `json:"cache_write"`
 	// CacheWrite1h is the price per 1M tokens written to the 1-hour prompt cache tier (2x base input).
 	CacheWrite1h float64 `json:"cache_write_1h"`
-	// CacheRead is the price per 1M tokens read from the prompt cache (0.1x base input).
+	// CacheRead is the price per 1M tokens read from the prompt cache (0.1x base input on most models; see pricing.json notes for exceptions).
 	CacheRead float64 `json:"cache_read"`
 }
 

app/cli/internal/trace/claude/pricing.json

@@ -1,9 +1,23 @@
 {
-  "version": "2026-08-28",
+  "version": "2026-10-02",
   "source": "https://platform.claude.com/docs/en/about-claude/pricing",
-  "notes": "cache_write = 5-minute tier (~1.25x base input). cache_write_1h = 1-hour tier (~2x base input). cache_read = ~0.1x base input. Multipliers are approximate; the published rates at the source URL are authoritative and may differ due to rounding (e.g. claude-3-haiku-20240307 cache_write is $0.30, not 0.25 * 1.25 = $0.3125).",
+  "notes": "cache_write = 5-minute tier (~1.25x base input). cache_write_1h = 1-hour tier (~2x base input). cache_read = ~0.1x base input (0.025x on claude-fable-5-1 / claude-mythos-5-1, 0.05x on claude-opus-5-5). Multipliers are approximate; the published rates at the source URL are authoritative and may differ due to rounding (e.g. claude-3-haiku-20240307 cache_write is $0.30, not 0.25 * 1.25 = $0.3125).",
   "default_model": "claude-sonnet-4-6",
   "models": {
+    "claude-fable-5-1": {
+      "input": 10.00,
+      "output": 50.00,
+      "cache_write": 12.50,
+      "cache_write_1h": 20.00,
+      "cache_read": 0.25
+    },
+    "claude-mythos-5-1": {
+      "input": 10.00,
+      "output": 50.00,
+      "cache_write": 12.50,
+      "cache_write_1h": 20.00,
+      "cache_read": 0.25
+    },
     "claude-fable-5": {
       "input": 10.00,
       "output": 50.00,
@@ -18,6 +32,13 @@
       "cache_write_1h": 20.00,
       "cache_read": 1.00
     },
+    "claude-opus-5-5": {
+      "input": 4.00,
+      "output": 20.00,
+      "cache_write": 5.00,
+      "cache_write_1h": 8.00,
+      "cache_read": 0.20
+    },
     "claude-opus-5": {
       "input": 5.00,
       "output": 25.00,
@@ -46,6 +67,13 @@
       "cache_write_1h": 10.00,
       "cache_read": 0.50
     },
+    "claude-sonnet-5-5": {
+      "input": 2.00,
+      "output": 10.00,
+      "cache_write": 2.50,
+      "cache_write_1h": 4.00,
+      "cache_read": 0.20
+    },
     "claude-sonnet-5": {
       "input": 2.00,
       "output": 10.00,

app/cli/internal/trace/claude/pricing_test.go

@@ -50,3 +50,23 @@ func TestPricingEmbedLoads(t *testing.T) {
 	assert.Equal(t, 4.00, sonnet5.CacheWrite1h)
 	assert.Equal(t, 0.20, sonnet5.CacheRead)
 }
+
+func TestPricingModelRates(t *testing.T) {
+	testCases := []struct {
+		model string
+		want  modelPricing
+	}{
+		{"claude-fable-5-1", modelPricing{Input: 10.00, Output: 50.00, CacheWrite: 12.50, CacheWrite1h: 20.00, CacheRead: 0.25}},
+		{"claude-mythos-5-1", modelPricing{Input: 10.00, Output: 50.00, CacheWrite: 12.50, CacheWrite1h: 20.00, CacheRead: 0.25}},
+		{"claude-opus-5-5", modelPricing{Input: 4.00, Output: 20.00, CacheWrite: 5.00, CacheWrite1h: 8.00, CacheRead: 0.20}},
+		{"claude-sonnet-5-5", modelPricing{Input: 2.00, Output: 10.00, CacheWrite: 2.50, CacheWrite1h: 4.00, CacheRead: 0.20}},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.model, func(t *testing.T) {
+			got, ok := pricing[tc.model]
+			require.True(t, ok, "expected %s in embedded pricing table", tc.model)
+			assert.Equal(t, tc.want, got)
+		})
+	}
+}