# modelprices.xyz LLM Price-Change Alert Feed

> modelprices.xyz LLM Price-Change Alert Feed is a paid API for AI agents from modelprices.xyz, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Returns a structured JSON feed of recent AI model pricing changes — old vs new token cost, percent delta, timestamps, plus newly launched and removed models — diffed from hourly snapshots across all major providers.

## Facts

- Endpoint: GET https://modelprices.xyz/llm/price-changes
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/modelprices-xyz-llm-price-change-alert-feed-7bef7545
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gToWtSGurlfrZK-gzj_Aj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability modelprices-xyz-llm-price-change-alert-feed-7bef7545
```

Example prompt: Can you pull the latest LLM price changes from modelprices.xyz and tell me which AI models from OpenAI, Anthropic, or Google have been repriced recently — including the old price, new price, and percent change?

## When to prefer this

Use this endpoint when you need to reactively detect and respond to AI inference pricing changes across providers — ideal for cost monitoring dashboards, automated repricing triggers, budget alerts, or AI market intelligence workflows. Prefer this over the static price table endpoint when the delta and timing of changes matter, not just current prices.

## Known failure modes

- No recent price changes found — returns empty array if no repricing events occurred in the monitored window
- Rate limit or payment failure — 402 Payment Required if x402 payment header is missing or insufficient
- Provider data temporarily unavailable — snapshot diffing may lag if upstream provider pricing pages are inaccessible
- Model ID not recognized — if a specific model filter is applied, unknown IDs may return empty results

## How this service works

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.

## Output

A structured JSON array of pricing change events, each containing model ID, provider, old and new per-token costs, percent delta, timestamp of change, plus lists of newly launched and removed models detected since the last hourly snapshot.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "models": [
   {
    "id": "claude-sonnet-5",
    "provider": "anthropic",
    "input_per_mtok": 3,
    "output_per_mtok": 15
   }
  ],
  "model_count": 2164,
  "generated_at": "2026-07-14T02:00:00.000Z",
  "provider_count": 72
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/modelprices-xyz-llm-price-change-alert-feed-7bef7545/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from modelprices.xyz](https://www.zero.xyz/host/modelprices.xyz/llms.txt)