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John Yesh
John Yesh

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I Built a Subscription Pricing API — Because Every AI Agent Gives You Wrong Prices for Netflix, Spotify, and ChatGPT

#api #ai #saas #webdev

Ask any LLM "how much does Netflix cost?" and you'll get an answer from 2023. Wrong currency. Wrong plans. Missing the ad-supported tier entirely.

Now imagine your AI agent is building a budget for a user and confidently says Spotify costs $9.99/month — except the user is in Australia where it's $13.99 AUD.

LLMs don't have current subscription pricing. They hallucinate it. I built an API so they don't have to.

The problem

Subscription pricing is surprisingly hard to get right:

  • Prices change constantly — Netflix alone has changed pricing 4 times in 2 years
  • Prices vary by country — Netflix Standard is $17.99 USD, £12.99 GBP, $18.99 AUD, $18.99 CAD
  • Plans vary by country — India has a Mobile-only plan for ₹149 that doesn't exist elsewhere
  • No one aggregates this — you'd have to scrape 75+ individual pricing pages across 6 countries

So I built an API that does it.

What it does

The Aristocles Subscription Pricing API tracks current pricing for 75+ subscription services across 15 categories and 6 countries (AU, US, UK, NZ, CA, IN).

Categories include:

Category Services
🤖 AI Tools ChatGPT Plus, Claude Pro, Midjourney, GitHub Copilot, Perplexity, Jasper, Cursor
🎬 Streaming Video Netflix, Disney+, Amazon Prime, Stan, Binge, Paramount+
🎵 Streaming Music Spotify, Apple Music, YouTube Music, Tidal, Amazon Music
🎮 Gaming Xbox Game Pass, PlayStation Plus, Nintendo Online
💪 Fitness Strava, Peloton, Fitbit Premium, MyFitnessPal
🎓 Education Coursera, Duolingo, Skillshare, MasterClass, LinkedIn Learning, Brilliant
📰 News & Media NYT, WSJ, The Athletic, Medium, Substack
☁️ Cloud Storage Google One, iCloud+
...and 7 more Dating, Food Delivery, Design, Communication, etc.

Real API responses

Get Netflix pricing across all countries 

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.aristocles.com.au/v1/prices/netflix"
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{
  "data": [
    {
      "country_code": "US",
      "plan_name": "Standard with ads",
      "price_amount": "7.99",
      "currency": "USD",
      "billing_period": "monthly"
    },
    {
      "country_code": "US",
      "plan_name": "Standard",
      "price_amount": "17.99",
      "currency": "USD"
    },
    {
      "country_code": "US",
      "plan_name": "Premium",
      "price_amount": "24.99",
      "currency": "USD"
    },
    {
      "country_code": "GB",
      "plan_name": "Standard with ads",
      "price_amount": "5.99",
      "currency": "GBP"
    },
    {
      "country_code": "AU",
      "plan_name": "Basic with ads",
      "price_amount": "7.99",
      "currency": "AUD"
    },
    {
      "country_code": "IN",
      "plan_name": "Mobile",
      "price_amount": "149.00",
      "currency": "INR"
    }
  ]
}
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Every plan. Every country. Current prices. With source attribution and verification dates.

Calculate your subscription stack cost 

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.aristocles.com.au/v1/services/calculator?services=netflix,spotify,chatgpt-plus"
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{
  "data": {
    "country": "AU",
    "total_monthly": "47.97",
    "total_annual": "575.64",
    "service_count": 3,
    "breakdown": [
      { "service_name": "Netflix", "plan_name": "Basic with ads", "price_amount": "7.99", "currency": "AUD" },
      { "service_name": "Spotify", "plan_name": "Student", "price_amount": "6.99", "currency": "AUD" },
      { "service_name": "ChatGPT Plus", "price_amount": "32.99", "currency": "AUD" }
    ]
  }
}
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Pass in any combination of services and get the total monthly and annual cost instantly.

Find cheaper alternatives 

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.aristocles.com.au/v1/alternatives/netflix"
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{
  "data": [
    { "service_name": "Disney+",           "cheapest_monthly_price": "6.99", "currency": "AUD", "feature_overlap_score": "0.55" },
    { "service_name": "Amazon Prime Video", "cheapest_monthly_price": "6.99", "currency": "AUD", "feature_overlap_score": "0.60" },
    { "service_name": "Paramount+",         "cheapest_monthly_price": "6.99", "currency": "AUD", "feature_overlap_score": "0.50" },
    { "service_name": "Binge",              "cheapest_monthly_price": "10.00", "currency": "AUD", "feature_overlap_score": "0.70" },
    { "service_name": "Stan",               "cheapest_monthly_price": "12.00", "currency": "AUD", "feature_overlap_score": "0.75" }
  ]
}
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Each alternative includes a feature overlap score — how similar the service is to the one you're replacing. Stan scores 0.75 against Netflix because both focus on general TV/film content. Disney+ scores 0.55 because it's more niche.

All endpoints

Endpoint What it does
GET /v1/services List all 75+ services, filterable by search
GET /v1/services/{slug} Full detail for a service with all plans and prices
GET /v1/prices/{slug} All current prices across countries and plans
GET /v1/categories List all 15 categories with service counts
GET /v1/alternatives/{slug} Find cheaper alternatives with feature overlap scores
GET /v1/services/calculator Calculate total cost for a stack of services

Built for AI agents — MCP server included

This is also an MCP server with 10+ tools. Any MCP-compatible AI agent (Claude, GPT, Gemini) can call it directly.

Add to Claude Desktop:

{
  "mcpServers": {
    "aristocles": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://api.aristocles.com.au/mcp/mcp/"]
    }
  }
}
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Then ask Claude: "How much would Netflix, Spotify, and ChatGPT Plus cost me per month in the US?" — it calls the calculator endpoint and gives you an exact answer: $58.97 USD/month.

No hallucinations. No outdated data. Just facts.

Use cases

  • AI agents & chatbots — give your users real pricing instead of GPT guesses
  • Personal finance apps — track subscription spending across services
  • Comparison sites — "Netflix vs Disney+ pricing by country" powered by real data
  • Budget calculators — calculate total subscription costs for any combination
  • Fintech products — analyze bank statements and match transactions to known subscription prices

Quick start

1. Get a free API key (100 requests/day):

curl -X POST https://api.aristocles.com.au/v1/auth/register \
  -H "Content-Type: application/json" \
  -d '{"email": "you@example.com", "name": "Your Name"}'
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2. Look up any service:

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.aristocles.com.au/v1/prices/spotify"
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3. That's it. Current prices, all countries, all plans.

Pricing

Plan Price Requests
Free $0/mo 100/day
Pro $9/mo 10,000/day
Enterprise $49/mo Unlimited

What's next

We're actively adding more services and countries. The API also includes a Trade Pricing API for contractor costs (plumber, electrician, etc.) across 5 countries — same API key, same auth.

API Docs · MCP Server on Smithery · Aristocles

Built by Aristocles — data intelligence that powers LLMs and fast-tracks Agentic AI solutions.

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