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Gemini 的 tooluse token 计费错误 #2935

@Zeta-ZhaoLi

Description

@Zeta-ZhaoLi

例行检查

  • 我已确认目前没有类似 issue
  • 我已确认我已升级到最新版本
  • 我已完整查看过项目 README,尤其是常见问题部分
  • 我理解并愿意跟进此 issue,协助测试和提供反馈
  • 我理解并认可上述内容,并理解项目维护者精力有限,不遵循规则的 issue 可能会被无视或直接关闭

问题描述

通过流式调用 gemini-3-flash-preview、gemini-3-pro-preview 等模型,开启 googleSearch,返回的 token 统计中,toolUse 的 token 被计入了输出 token,导致用户费用特别高。

{
    "usageMetadata": {
        "promptTokenCount": 151,
        "candidatesTokenCount": 1089,
        "totalTokenCount": 20689,
        "toolUsePromptTokenCount": 18329,
        "thoughtsTokenCount": 1120,
        "promptTokensDetails": [
            {
                "modality": "TEXT",
                "tokenCount": 151
            }
        ],
        "toolUsePromptTokensDetails": [
            {
                "modality": "TEXT",
                "tokenCount": 18329
            }
        ]
    },
    "modelVersion": "gemini-3-flash-preview"
}

复现步骤

curl --location 'https://api.xxxx.com/v1beta/models/gemini-3-flash-preview:streamGenerateContent?key=sk-xxxxxxxxxxxxxxxxx' \
--header 'Content-Type: application/json' \
--data '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "请搜索网络,给我讲一下 gemini 的调用"
          }
        ]
      }
    ],
    "generationConfig": {
      "thinkingConfig": {
        "thinkingLevel": "HIGH"
      }
    },
    "tools": [
      {
        "urlContext": {}
      },
      {
        "googleSearch": {}
      }
    ]
}'

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