Token Tracker

Track and report token usage and cost for conversations. Use when: (1) User asks about token consumption (e.g. "token用了多少", "花了多少钱", "how much did this cost", "usage stats"), (2) At the end of long/complex conversations or tasks to summarize resource usage, (3) User explicitly asks for cost or spending summary. Triggers: token usage, cost tracking, 花费, 用量, 消耗, how much tokens, conversation cost, API cost, spending.

Author: zruler
Blog: https://www.zruler.fun/
Email: [e-mail]
Feedback: 有问题请及时反馈！Issues and suggestions welcome.

Report token usage and estimated cost for the current conversation.

When to Trigger

1. User asks — "token用了多少"、"花了多少钱"、"cost"、"usage" 等
2. Long conversation ends — 复杂任务完成后主动报告
3. User requests summary — 明确要求看用量统计

Quick Usage

Call session_status to get current session metrics, then format a user-friendly summary.

Response Format

After getting session_status, report in this format:

text

📊 本次对话用量

🧮 Tokens: {input} 入 / {output} 出
💵 费用: ${cost}
🗄️ 缓存: {cache_percent}% 命中 ({cached} 缓存 / {new} 新)
📚 上下文: {used}/{max} ({percent}%)

Model Pricing Reference (USD per 1M tokens)

Model	Input	Output	Cached Input
claude-sonnet-4-20250514	$3	$15	$0.30
claude-opus-4-20250514	$15	$75	$1.50
gpt-4o	$2.50	$10	$1.25
gpt-4o-mini	$0.15	$0.60	$0.075
o1	$15	$60	$7.50
o3-mini	$1.10	$4.40	$0.55
gemini-2.0-flash	$0.10	$0.40	$0.025
gemini-2.5-pro	$1.25-$2.50	$10-$15	-
deepseek-chat	$0.27	$1.10	$0.07
deepseek-reasoner	$0.55	$2.19	$0.14

Note: Actual cost from session_status is authoritative. This table is for reference only.

Usage Tips

• For long conversations, suggest compaction if context > 80%
• Note cache hit rate — high cache = lower actual cost
• If user asks for historical usage, explain this tracks current session only