Token Estim8r: Track AI Token Usage & Costs with JinaAI

Token Estim8r is a powerful n8n sub-workflow designed to monitor and analyze token usage and associated costs for any AI-based workflow. It integrates seamlessly via an Execute Workflow node, capturing prompt and completion token counts, fetching real-time model pricing through JinaAI API (or static rates), calculating total costs, and logging everything to a Google Sheet with timestamps, model details, and execution metadata.

This tool addresses a critical pain point for AI engineers and automation specialists: opaque token consumption leading to unexpected API bills. By providing granular visibility into usage per execution, it enables precise budgeting, optimization of prompts, and cost forecasting—essential for prototyping, scaling, or production deployments of LLM-powered automations.

Ideal use cases include tracking OpenAI GPT, Anthropic Claude, or other token-based models in n8n workflows for chatbots, content generation, data analysis, or RAG systems. Benefits include reduced overspending, performance insights for prompt engineering, and easy integration into any n8n setup. Setup is straightforward: create a Google Sheet, configure credentials, and trigger from your main workflows.