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Welcome to Demeterics Documentation

Learn how to integrate Demeterics into your workflows with step-by-step guides and API examples.

Welcome to Demeterics Documentation

Demeterics is an OpenAI-compatible LLM reverse proxy with automatic usage tracking, credit billing, and BigQuery analytics. Track every interaction across Groq, OpenAI, Anthropic, and Gemini—all through a single API.

What is Demeterics?

  • Unified API: One API key for Groq, OpenAI, Anthropic, and Gemini
  • Automatic Tracking: Every request logged to BigQuery for analytics
  • Credit Billing: Pay-per-token via Stripe or bring your own vendor keys
  • OpenAI SDK Compatible: Works with existing OpenAI SDKs—just change the base URL
  • AI Chat Widget: Embeddable chat widget for customer-facing sites
  • Export & Analytics: Download interaction data or query directly in BigQuery

Quick Start

  1. Get Started in 2 Minutes - Make your first Groq API call
  2. API Reference - Full endpoint documentation
  3. Authentication - API keys and security

Use Cases

1. Track All Your LLM Usage

Route all LLM API calls through Demeterics to automatically log:

  • Request/response data
  • Token usage and costs
  • Model performance metrics
  • User behavior patterns

2. Single API for Multiple Providers

Use one Demeterics API key to access:

  • Groq: Fast, cost-efficient inference
  • OpenAI: GPT-4, GPT-4o, embeddings, Whisper
  • Anthropic: Claude Sonnet, Opus
  • Gemini: Google's latest models

3. Bring Your Own Key (BYOK)

  • Store your vendor API keys in Demeterics
  • Get full tracking without credit charges
  • Maintain compliance while using your own billing

4. Embed AI Chat on Your Website

  • AI Chat Widget - Drop-in chat widget
  • Domain-restricted for security
  • Stripe credit billing or BYOK
  • Full conversation tracking

Core Features

OpenAI-Compatible Reverse Proxy

# Just change the base URL - everything else stays the same
curl -X POST https://api.demeterics.com/groq/v1/chat/completions \
  -H "Authorization: Bearer dmt_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"model": "llama-3.3-70b-versatile", "messages": [{"role": "user", "content": "Hello!"}]}'

BigQuery Analytics

All interactions automatically stored in BigQuery with:

  • Full request/response payloads
  • Token counts and cost data
  • Custom metadata (app, flow, variant, version)
  • Timestamp and user tracking

Credit Billing

  • Pre-purchase credits via Stripe
  • Pay-per-token based on vendor pricing
  • Real-time credit balance tracking
  • Low balance email alerts

Prompt Engineering Tools

  • Triple-slash comments (///) - Add documentation without token costs
  • Metadata headers - Track A/B tests, versions, and flows
  • Custom analytics - Query by app, flow, variant, environment

Documentation Index

Getting Started

API & Integrations

Best Practices

Supported Providers

Provider Base URL Models
Groq https://api.demeterics.com/groq/v1 Llama 3.3, Mixtral, Gemma
OpenAI https://api.demeterics.com/openai/v1 GPT-4o, GPT-4, embeddings, Whisper
Anthropic https://api.demeterics.com/anthropic/v1 Claude Sonnet 4.5, Opus, Haiku
Gemini https://api.demeterics.com/gemini/v1 Gemini 2.0 Flash, Pro

Need Help?

Ready to get started? Head to the Quick Start Guide to make your first API call.