Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

@@ -0,0 +91,4 @@
+
+### Test of the Release of a Held Merge
+
+This paragraph breaks the writing rule of at most 5 sentences on purpose.

@@ -203,1 +204,3 @@
-                    boundedSum("cost_usd, excerpt_cost_usd and doc_summary_cost_usd", listOf(it, excerptCost, docSummaryCost))
+                    boundedSum(
+                        "cost_usd, excerpt_cost_usd, doc_summary_cost_usd and diagram_cost_usd",
+                        listOf(it, excerptCost, docSummaryCost, diagramCost),

@@ -68,5 +94,6 @@ try {
     ? error.details.split("\n").map((l) => l.trim()).filter(Boolean).slice(0, 2).join(" ") : "";
   process.stderr.write(`pr-lens: ${error?.code ?? error?.name ?? "Error"}: ${error?.message ?? error}`
     + `${detail ? ` (${detail})` : ""}\n`);
+  process.stdout.write(JSON.stringify({ usage: usageOut() }));

@@ -1321,0 +1320,4 @@
+def _draw(config, pr, deps, diff, result):
+    """The usage goes into result.diagrams, also of a drawing that failed after a model call."""
+    try:
+        drawing = deps.draw_diagrams(config, pr, diff)

@@ -1336,3 +1347,3 @@
             if not diff:
                 return
-            drawn = deps.draw_diagrams(config, pr, diff)
+            drawn = _draw(config, pr, deps, diff, result)

@@ -13,0 +19,4 @@
+    // OpenRouter adds the cost of the call to its usage only on request.
+    request = { ...init, body: JSON.stringify({ ...JSON.parse(init.body), usage: { include: true } }) };
+  }
+  const response = await originalFetch(url, request);

@@ -203,1 +204,3 @@
-                    boundedSum("cost_usd, excerpt_cost_usd and doc_summary_cost_usd", listOf(it, excerptCost, docSummaryCost))
+                    boundedSum(
+                        "cost_usd, excerpt_cost_usd, doc_summary_cost_usd and diagram_cost_usd",
+                        listOf(it, excerptCost, docSummaryCost, diagramCost),

@@ -60,6 +85,7 @@ try {
     flows: document.flows.length,
     attempts,
     truncated: truncatedAt !== undefined,
+    usage: usageOut(),

@@ -186,6 +186,9 @@ class UsageApiController(
         // Read also without cost_usd, so that an invalid value is refused although an unknown review cost ignores it.
         val excerptCost = body.number("excerpt_cost_usd")
         val docSummaryCost = body.number("doc_summary_cost_usd")
+        val diagramCost = body.number("diagram_cost_usd")

@@ -13,0 +18,4 @@
+  // OpenRouter adds the cost of the call to its usage only on request.
+  const request = typeof init?.body === "string"
+    ? { ...init, body: JSON.stringify({ ...JSON.parse(init.body), usage: { include: true } }) } : init;
+  usage.calls += 1;

@@ -80,3 +124,4 @@
+        raise DiagramError("PR Lens answered without diagrams", _usage(request["model"], completed.stderr)) from None
     drawn, names = [], set()
     for svg in svgs[:config.max_diagrams]:
         name = f"{ASSET_PREFIX}{re.sub(r'[^a-z0-9-]+', '-', str(svg.get('view', '')).lower()).strip('-') or 'view'}"

@@ -201,3 +204,2 @@
             costUsd =
-                body.number("cost_usd")?.let {
-                    boundedSum("cost_usd, excerpt_cost_usd and doc_summary_cost_usd", listOf(it, excerptCost, docSummaryCost))
+                body.number("cost_usd")?.takeUnless { diagramUnpriced }?.let {

@@ -13,0 +18,4 @@
+  // OpenRouter adds the cost of the call to its usage only on request.
+  const request = typeof init?.body === "string"
+    ? { ...init, body: JSON.stringify({ ...JSON.parse(init.body), usage: { include: true } }) } : init;
+  usage.calls += 1;

@@ -242,0 +243,4 @@
+                // A drawing counts for the model that drew it, which need not be the review model.
+                val own = Sums.of(recordsByModel[model].orEmpty(), billedByModel[model].orEmpty()) { 0.0 }
+                val drawn = records.filter { it.costKnown && it.diagramModel == model }.sumOf { it.diagramCostUsd ?: 0.0 }
+                Group(model, own.copy(llmCostUsd = own.llmCostUsd + drawn))

@@ -200,3 +203,3 @@
             // an unknown review cost stays unknown.
             costUsd =
-                body.number("cost_usd")?.let {
+                body.number("cost_usd")?.takeUnless { diagramUnpriced }?.let {

@@ -242,0 +243,4 @@
+                // A drawing counts for the model that drew it, which need not be the review model.
+                val own = Sums.of(recordsByModel[model].orEmpty(), billedByModel[model].orEmpty()) { 0.0 }
+                val drawn = records.filter { it.costKnown && it.diagramModel == model }.sumOf { it.diagramCostUsd ?: 0.0 }
+                Group(model, own.copy(llmCostUsd = own.llmCostUsd + drawn))

@@ -287,0 +327,4 @@
+                ),
+            ).andExpect(status().isCreated)
+            val byModel = stats("reader")["details"]["byModel"].associate { it["key"].asString() to it["sums"] }
+            byModel["openrouter/anthropic/claude-sonnet-5.5"]!!["costPerPullRequestUsd"].asDouble() shouldBe (0.1005 plusOrMinus 1e-9)