LangChain Reference home page

GitHub
Main Docs

Overview
Client
AsyncClient
Run Helpers
Run Trees
Evaluation
Schemas
Utilities
Wrappers
Anonymizer
Testing
Expect API
Middleware
Pytest Plugin
Deployment SDK

⌘I

LangChain Assistant

Ask a question to get started

Enter to send•Shift+Enter new line

Menu

Overview Client AsyncClient Run Helpers Run Trees Evaluation Schemas Utilities Wrappers Anonymizer Testing Expect API Middleware Pytest Plugin Deployment SDK

Language

Theme

PythonlangsmithschemasExtractedUsageMetadatatotal_cost

Attribute●Since v0.3

total_cost

Copy

total_cost: float

View source on GitHub

The total cost of the tokens.