Inits cache token usage

Workshop Participant · Workshop Participant · commit 9ca9b7297864 · 2025-07-09T09:23:33.000Z
diff --git a/src/strands/event_loop/streaming.py b/src/strands/event_loop/streaming.py
@@ -275,7 +275,7 @@ async def process_stream(
     }
     state["content"] = state["message"]["content"]
 
-    usage: Usage = Usage(inputTokens=0, outputTokens=0, totalTokens=0)
+    usage: Usage = Usage(inputTokens=0, outputTokens=0, totalTokens=0, cacheReadInputTokens=0, cacheWriteInputTokens=0)
     metrics: Metrics = Metrics(latencyMs=0)
 
     async for chunk in chunks:

Original file line number	Diff line number	Diff line change
`@@ -275,7 +275,7 @@ async def process_stream(`
`275`	`275`	`}`
`276`	`276`	`state["content"] = state["message"]["content"]`
`277`	`277`
`278`		`- usage: Usage = Usage(inputTokens=0, outputTokens=0, totalTokens=0)`
	`278`	`+ usage: Usage = Usage(inputTokens=0, outputTokens=0, totalTokens=0, cacheReadInputTokens=0, cacheWriteInputTokens=0)`
`279`	`279`	`metrics: Metrics = Metrics(latencyMs=0)`
`280`	`280`
`281`	`281`	`async for chunk in chunks:`