AI Cost Intelligence

Stop guessing your AI margins.

Track real-time costs, per request.

Bear Lumen automatically captures, attributes, and meters your AI infrastructure spend. Track LLM usage down to the user, the feature, or any custom dimension, in under three minutes.

Start free trial Read the docs

Works seamlessly with your existing AI stack

OpenAIAnthropicGoogle GeminiAWS BedrockMistralStripe

Cost Intelligence

Drop in one line of code

Wrap your LLM responses with our SDK. Bear Lumen auto-detects the provider and maps live usage to real per-request costs instantly.

Margin Intelligence

See profitable vs. underwater users

Blended margins hide the true story. Break down exact margins by customer, segment, product tier, and custom workflow dimensions.

Pricing Intelligence

Simulate before you launch

Run your historical usage through flat-rate, tiered, or hybrid pricing models and project plans that cover your actual variable costs.

For Engineering

Built for modern AI applications

Token spreadsheets and end-of-month invoices are guesswork. Modern AI products are multi-step workflows, and Bear Lumen meters every request and background task as it happens.

Auto-detects OpenAI, Anthropic, Google Gemini, AWS Bedrock, Mistral, and Ollama responses
Zero-latency overhead: events queue in memory and flush in background batches
Streaming responses pass through unchanged
Cost, margin, and insight queries from the same SDK

import OpenAI from 'openai';
import { BearLumen } from '@bearlumen/node-sdk';

const openai = new OpenAI();
const bear = new BearLumen({ apiKey: process.env.BEAR_LUMEN_API_KEY });

const response = await openai.chat.completions.create({
  model: 'gpt-4o',
  messages: [{ role: 'user', content: 'Hello!' }],
});

// One line. Provider auto-detected, cost attributed.
const result = bear.track(response);

result.model;        // 'gpt-4o'
result.inputTokens;  // 12
result.outputTokens; // 85

Enterprise-grade security by design

Our SDK tracks token counts and metadata only. We do not store, log, or view sensitive prompt payloads or user inputs. Built with SOC 2 compliance standards in mind.

Frequently asked questions

How is this different from traditional cloud FinOps platforms?

Traditional FinOps platforms track infrastructure spend at the service level: EC2, Lambda, storage. Bear Lumen tracks AI costs at the request level, attributing every LLM call to specific users, features, and workflows. You get real-time unit economics, not a monthly cloud bill.

Do we have to connect Stripe to track cost data?

No. Cost tracking works with just the SDK. Connecting Stripe is optional and adds the revenue side: it lets Bear Lumen pair each customer’s AI cost with what they pay you, which unlocks per-customer margin reporting.

Does the SDK add latency to our live LLM queries?

No. The SDK reads the response your provider already returned, so nothing sits between you and the model. Tracking events queue in memory and flush in background batches, the same pattern analytics SDKs have used for years.

Ready to own your AI unit economics?

Join the teams using data-backed pricing to keep healthy margins while their AI usage scales.

Start free trial View pricing