Free AI Pricing API — Real-Time LLM Cost Data for 49 Models

If you're building tools that need AI pricing data — cost calculators, budget dashboards, model comparison tools, or billing systems — you've probably tried to scrape provider pricing pages. It's fragile, time-consuming, and breaks every time OpenAI or Anthropic changes their pricing.

I built a free API that solves this. It returns JSON pricing data for 49 AI models across 10 providers, updated within 24 hours of any price change. No authentication required.

The Quick Start

One request gets you all the data:

# Get all pricing data
curl https://getapipulse.com/api/pricing

# Filter by provider
curl https://getapipulse.com/api/pricing?provider=openai

# Filter by tier
curl https://getapipulse.com/api/pricing?tier=budget

The response includes input/output pricing per 1M tokens, context windows, tier classification, and deprecation status for every model.

{
  "id": "openai-gpt5",
  "name": "GPT-5",
  "provider": "openai",
  "tier": "premium",
  "input": 1.25,
  "output": 10.00,
  "context": "272K",
  "deprecated": false
}

What's Included

Use Cases

1. Cost Calculator

Build a calculator that estimates monthly spend based on token usage:

const res = await fetch('https://getapipulse.com/api/pricing');
const { models } = await res.json();

// Calculate monthly cost for GPT-5
const gpt5 = models.find(m => m.id === 'openai-gpt5');
const inputTokens = 1_000_000;  // 1M tokens/month
const outputTokens = 500_000;

const monthlyCost =
  (inputTokens / 1_000_000) * gpt5.input +
  (outputTokens / 1_000_000) * gpt5.output;

console.log(`GPT-5 monthly: $${monthlyCost.toFixed(2)}`);
// → GPT-5 monthly: $6.25

2. Model Comparison Tool

Compare costs across providers to find the cheapest option:

// Find cheapest budget model
const budget = models
  .filter(m => m.tier === 'budget' && !m.deprecated)
  .sort((a, b) => a.input - b.input);

console.log('Cheapest models:');
budget.slice(0, 5).forEach(m => {
  console.log(`  ${m.name}: $${m.input}/$${m.output}`);
});
// → GPT-oss 20B: $0.08/$0.35
// → Mistral Small 4: $0.10/$0.30
// → Llama 3.1 8B: $0.10/$0.10

3. Budget Dashboard

Build a real-time dashboard showing current pricing for your team's most-used models. The API includes s-maxage=3600 headers for CDN caching, so it's fast and free at scale.

4. Billing Integration

Use the pricing data to calculate costs in your AI-powered SaaS billing system. Track per-user API costs and pass them through to customers.

Embeddable Badge

Want to show live pricing on your site or README? Use the SVG badge endpoint:

![GPT-5 Pricing](https://getapipulse.com/api/badge-md?model=openai-gpt5)

<!-- Embeddable pricing badge for your site -->
<div id="apipulse-badge"></div>
<script src="https://getapipulse.com/badge.js"
  data-theme="dark" data-count="4" async></script>

API Endpoints

Data Format

The full dataset includes:

• Model ID — unique identifier (e.g., openai-gpt5)
• Name — human-readable name (e.g., "GPT-5")
• Provider — provider slug (e.g., openai)
• Tier — classification: premium, mid, or budget
• Input pricing — per 1M tokens (USD)
• Output pricing — per 1M tokens (USD)
• Context window — max context length
• Deprecation status — whether the model is deprecated

Rate Limits

Free tier: 60 requests per minute. No API key required. If you need higher limits for production use, get in touch.

License

The pricing data is released under CC-BY-4.0. Use it in commercial products, dashboards, and tools. Attribution to APIpulse is appreciated but not required.

FAQ

Is the APIpulse pricing API really free?

Yes. 100% free, no authentication required. It provides JSON data for 49 AI models across 10 providers. Rate limited to 60 requests per minute.

How often is the pricing data updated?

Pricing data is updated within 24 hours of any provider price change. The APIpulse team monitors all 10 providers for pricing changes. Last verified: Jul 2, 2026.

Can I use the data in commercial products?

Yes. The data is released under CC-BY-4.0. Attribution appreciated but not required.

What's the raw JSON endpoint?

For direct access to the pricing data file (no API wrapper), use https://getapipulse.com/data/pricing.json. Same data, no rate limiting.

Do you track historical pricing?

Not yet. The current API shows current pricing only. Historical tracking is planned for a future release. Pro users will get priority access.

Built by APIpulse — compare AI API pricing across 49 models from 10 providers. Calculate your costs →