# Streaming Token Counting Pitfalls: 7 Common Production Bugs

> Source: https://sukruyusufkaya.com/en/learn/token-ekonomisi/streaming-token-sayim-tuzaklari-production
> Updated: 2026-05-14T14:44:11.847Z
> Category: Token Ekonomisi & LLM Cost Optimization
> Module: Module 3: Cost Telemetry — Measure First, Then Optimize
**TLDR:** Token counting in stream mode easily goes wrong: partial output count in cancelled streams, missing last-chunk usage, token losses during idle timeout. We cover the 7 most common production bugs with fixes.