diff --git a/.changeset/patch-model-inventory-2026-08-10.md b/.changeset/patch-model-inventory-2026-08-10.md
new file mode 100644
index 00000000000..19cd8c69868
--- /dev/null
+++ b/.changeset/patch-model-inventory-2026-08-10.md
@@ -0,0 +1,5 @@
+---
+"gh-aw": patch
+---
+
+Model alias inventory update for 2026-08-10: add `kimi-k3` ($3/1M input, $15/1M output, $0.30/1M cache read) to the `github-copilot` provider in `models.json`; the existing `kimi` alias already covers the new model.
diff --git a/actions/setup/js/models.json b/actions/setup/js/models.json
index c1a768e5c72..b9c1d38bc9e 100644
--- a/actions/setup/js/models.json
+++ b/actions/setup/js/models.json
@@ -530,6 +530,15 @@
           "provider_type": "openai",
           "wire_api": "completions"
         },
+        "kimi-k3": {
+          "cost": {
+            "input": "3e-06",
+            "output": "1.5e-05",
+            "cache_read": "3e-07"
+          },
+          "provider_type": "openai",
+          "wire_api": "completions"
+        },
         "grok-4.5": {
           "cost": {
             "input": "2e-06",
diff --git a/pkg/cli/data/models.json b/pkg/cli/data/models.json
index c1a768e5c72..b9c1d38bc9e 100644
--- a/pkg/cli/data/models.json
+++ b/pkg/cli/data/models.json
@@ -530,6 +530,15 @@
           "provider_type": "openai",
           "wire_api": "completions"
         },
+        "kimi-k3": {
+          "cost": {
+            "input": "3e-06",
+            "output": "1.5e-05",
+            "cache_read": "3e-07"
+          },
+          "provider_type": "openai",
+          "wire_api": "completions"
+        },
         "grok-4.5": {
           "cost": {
             "input": "2e-06",
diff --git a/pkg/cli/model_costs_test.go b/pkg/cli/model_costs_test.go
index 444c5999bfd..65265978f59 100644
--- a/pkg/cli/model_costs_test.go
+++ b/pkg/cli/model_costs_test.go
@@ -17,6 +17,14 @@ func TestFindModelPricing(t *testing.T) {
 	assert.InDelta(t, 0.000003, pricing["input"], 1e-12)
 }
 
+func TestFindKimiK3Pricing(t *testing.T) {
+	pricing, ok := findModelPricing("github-copilot", "kimi-k3")
+	require.True(t, ok)
+	assert.InDelta(t, 0.000003, pricing["input"], 1e-12)
+	assert.InDelta(t, 0.000015, pricing["output"], 1e-12)
+	assert.InDelta(t, 0.0000003, pricing["cache_read"], 1e-12)
+}
+
 func TestComputeModelInferenceAIC(t *testing.T) {
 	aic := computeModelInferenceAIC("anthropic", "claude-sonnet-4.6", 1000, 200, 400, 50, 25)
 	assert.InDelta(t, 0.54825, aic, 1e-9)