Update custom-costs.mdx (#20492)

kathayl · web-flow · commit 7035c766a46e · 2025-03-05T12:30:57.000Z
clarification on how custom costs interact with cache hit
diff --git a/src/content/docs/ai-gateway/configuration/custom-costs.mdx b/src/content/docs/ai-gateway/configuration/custom-costs.mdx
@@ -45,3 +45,8 @@ curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/
         ]
       }'
 ```
+
+:::note
+
+If a response is served from cache (cache hit), the cost is always `0`, even if you specified a custom cost. Custom costs only apply when the request reaches the model provider.
+:::

Original file line number	Diff line number	Diff line change
`@@ -45,3 +45,8 @@ curl https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openai/chat/`
`45`	`45`	`]`
`46`	`46`	`}'`
`47`	`47`	```
	`48`	`+`
	`49`	`+:::note`
	`50`	`+`
	`51`	+If a response is served from cache (cache hit), the cost is always `0`, even if you specified a custom cost. Custom costs only apply when the request reaches the model provider.
	`52`	`+:::`