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Live Model Inference Cost Index
x402
Live Model Inference Cost Index is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Returns live per-model USD-per-token prompt and completion pricing, context window size, and cache-read pricing from OpenRouter's public model catalog.
Price / call$0.002
Success—
StatusUnknown
How this service works
Live merchant inference-cost index from OpenRouter's public model catalog: per-model USD-per-token prompt and completion pricing, context window, reasoning requirements, and cache-read pricing where offered. Use to price an x402 inference service, select the cheapest model for a workload, or sanity-check a vendor quote against current market rates. Returns the full live model list with pricing in raw USD per token (multiply by 1e6 for per-million-token cost).
Output
A full list of AI models with their live USD-per-token pricing for prompt tokens, completion tokens, and cache-read tokens where available, plus context window sizes and reasoning requirements. Multiply any price by 1,000,000 to get cost per million tokens.
Example use cases
Cheapest model selection for workload
“I need to pick the most cost-effective LLM for processing a million customer support tickets — can you pull the live inference pricing index and tell me which model has the lowest completion token cost while offering at least 32k context?”
Sanity-check a vendor inference quote
“A vendor just quoted me $2.50 per million output tokens for Claude 3.5 Sonnet — can you check the current live market rates and tell me whether that's fair or if I'm being overcharged?”
Price an x402 inference service
“I'm about to list my inference service on x402 and I want to set competitive prices — can you fetch the live model cost index so I can see what OpenRouter is currently charging per token for the models I'm wrapping?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/live-model-inference-cost-indexWhen to prefer
Choose this endpoint when you need live, up-to-date inference pricing across the full OpenRouter model catalog in a single call — particularly useful for x402 inference service pricing, cost-optimized model selection, or validating vendor quotes against current market rates. Prefer this over scraping OpenRouter directly when you need a paid, metered, agent-friendly JSON response with structured schema.
Side effects
- OpenRouter upstream unavailable — upstreamStatus non-200 returned with ok:false
- Payment not received — 402 response requiring x402 payment before data is returned
- Invalid query parameter value for meta field — schema validation error
- Network timeout reaching k2so.wrong.systems — no response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"paid": true,
"result": {
"ok": true,
"body": {},
"service": "live-model-inference-cost-index",
"generatedAt": "2026-01-01T00:00:00.000Z",
"upstreamStatus": 200
},
"service": "live-model-inference-cost-index",
"provider": "K-2SO"
}
}Tags
x402
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