diff --git a/pkg/api/provider/anthropic/anthropic.go b/pkg/api/provider/anthropic/anthropic.go
index 4da2ae3..e471959 100644
--- a/pkg/api/provider/anthropic/anthropic.go
+++ b/pkg/api/provider/anthropic/anthropic.go
@@ -353,7 +353,8 @@ func (c *AnthropicClient) CreateChatCompletionStream(
 						block.Text += text
 						output <- provider.Chunk{
 							Content:    text,
-							TokenCount: 1,
+							// rough, anthropic performs some chunking
+							TokenCount: uint(len(strings.Split(text, " "))),
 						}
 					}
 				case "input_json_delta":