[WIP] Add kimi-k3 model to models.json (#51938)

* Initial plan

* Add Kimi K3 model pricing

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

.changeset/patch-model-inventory-2026-08-10.md

@@ -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",

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",

pkg/cli/data/models.json

@@ -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)