About TokenLens

Know what you spend, what you waste, and what it earns.

AI spend is the fastest-growing line item on most engineering budgets — and the least visible. Only about a quarter of companies say they have real visibility into their AI costs. Bills arrive as surprises, waste hides in duplicate calls and oversized models, and nobody can say what a feature actually costs to run.

TokenLens is LLM cost monitoring built for small teams: connect a read-only key in two minutes, see spend by provider, model, and project, catch overruns before they happen, and get concrete savings recommendations. No SDK, no proxy, no enterprise sales call.

Where TokenLens sits

Your companyYour AI appsupport bot, RAG, agentsLLM providersOpenAIAnthropicAdmin billing APIscosts and usage, read-onlyLLM API callstokens in, dollars outTokenLenshourly cost sync, budgets,waste insightspull costs and usageread-only admin keyYour teamdashboard viewSlack and email alertsviewv2 gateway (optional): route calls for real-time capsyour sideTokenLensLLM providers

TokenLens sits beside your traffic, not in it. Your app keeps calling providers directly — zero added latency, nothing breaks if TokenLens is down. Cost data arrives through a separate read-only pull of each provider’s billing API. The optional v2 gateway is the only mode that touches live traffic, for real-time budget caps.

How it works — 2-minute walkthrough

Two-minute setup walkthrough.

Frequently asked questions

No. TokenLens reads billing data through each provider's official admin APIs. You paste a read-only admin key and you're done — no SDK, no proxy, no instrumentation.