Model Meter — AI cost tracking

Data

Reading a $12K AI Bill: What Spend Visibility Actually Shows You

A worked example of a month of multi-provider LLM spend — the breakdowns that matter, the anomalies worth catching, and how project-level attribution changes the conversation.

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Model Meter Team7 min read
cost-analysis, openai, anthropic, gemini, data

The setup

This post walks through a realistic example month of AI spend for a mid-size engineering team, the way it looks in Model Meter's dashboard. The numbers below are illustrative — they represent a plausible month for a team of ~15 engineers shipping AI features across four projects. Your data will differ. The point is what the breakdown makes possible.

Month breakdown by provider

Total tracked AI spend for the month: $12,544.

ProviderSpendShareTop model
OpenAI$5,89047%gpt-4o
Anthropic$3,75630%claude-3-5-sonnet
Google$1,87915%gemini-2.0-flash
Groq$1,0198%llama-3-70b

This is the kind of distribution that surprises teams. Anthropic often gets assumed to dominate because Claude handles the harder reasoning tasks. Here, OpenAI leads because gpt-4o-mini carries the highest call volume across high-frequency features.

Which projects drove the spend

ProjectSpendPrimary driver
API platform$4,820gpt-4o for structured extraction
Engineering copilot$3,170claude-3-5-sonnet for code tasks
Support intelligence$2,984gpt-4o-mini for ticket classification
R&D experiments$1,570Mixed — Gemini Flash + Groq

The engineering copilot is the interesting line here. New features ramp quietly, and by the time the invoice arrives they're already the second-largest cost driver. Seeing that mid-month is what lets you set a budget before it becomes a finance conversation.

What a team would do with this

Three actions this kind of breakdown enables:

  1. Find the underused cheaper model. Gemini Flash handles summarization at roughly 40% lower cost than GPT-4o-mini at comparable quality in many workloads. A provider breakdown makes that migration candidate obvious.

  2. Cap the experiment budget. Unguarded R&D spend is where runaway costs live. A misconfigured retry loop can burn hundreds in an afternoon — the dashboard flags it the same day instead of at invoice time.

  3. Trace the spike. When a provider total jumps mid-month, project and operation labels let you trace it to a specific feature or worker in minutes — not after a week of digging through logs.

Try it yourself

Model Meter is a TypeScript SDK. Connect it to your own traffic and the real numbers replace the example ones.

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