api-usage — OpenAI API cost and token tracker

api-usage is a minimalist cost tracking dashboard for OpenAI API users and business owners

api-usage is a specialized monitoring tool designed to track OpenAI API expenditures and token consumption in real-time. This utility provides business owners and technical leads with a transparent view of how their AI budgets are being spent across different models like GPT-4, GPT-3.5, and DALL-E. By connecting your API key, you get an immediate visual breakdown of daily costs and performance metrics. The platform allows users to select specific date ranges to audit historical spending patterns and identify which specific models or assistants are driving the highest costs. This level of granularity is essential for businesses scaling their AI operations in 2026, as it prevents unexpected billing overages. You can see the exact proportion of costs attributed to input tokens versus output tokens for every transaction. Using api-usage helps teams optimize their prompt engineering by showing the financial impact of different model versions. On surfai.app, we recommend this tool for startups that need a lightweight dashboard without the overhead of heavy enterprise monitoring suites. Its open-source nature ensures high privacy standards for sensitive API keys. The tool currently offers its core monitoring features entirely for free. This makes it an ideal choice for independent developers and small firms that need reliable fiscal oversight of their OpenAI accounts without adding another subscription to their stack.

• Pricing: free

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