The Hidden Cost of AI APIs: A Developer's Guide to Tracking Multi-Provider Spending

Dev.to AI
Generative AI AI Regulation Open Source AI

Why Your AI Bill Is Higher Than You Think If you're building with AI APIs in 2024-2025, you're probably juggling multiple providers: OpenAI for GPT-4o, Anthropic for Claude, Google for Gemini, maybe Mistral or Cohere for specific use cases. Each provider has its own pricing model, its own dashboard, and its own way of counting tokens. The result? Most teams have no idea what they're actually spending on AI until the invoice arrives. I've seen startups burn through $15,000/month on AI APIs without realizing it - because nobody was tracking the aggregate spend across providers.