the402 endpoint detail

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modelprices.xyz llm price-changes

https://modelprices.xyz/llm/price-changes

answers 402

LLM price-change alert feed: track when OpenAI, Anthropic, Google or any AI provider reprices GPT, Claude, Gemini or any model's inference cost per token — old vs new price, percent delta, when it happened, plus newly launched and removed models. Structured JSON diffed from hourly snapshots; ideal for cost monitoring, repricing triggers, and AI market intelligence.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0x63a20fa244d3E6a8902121E99704b7F857dc6EBB
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
219 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:30:18.610Z (2d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fmodelprices.xyz%2Fllm%2Fprice-changes"