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Annalist AI Model Price & Availability Changes Feed
x402
Annalist AI Model Price & Availability Changes Feed is a paid API for AI agents from api.annalist.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).
Returns a chronological feed of recent changes to AI model pricing and availability across providers, including price cuts/raises, new/removed models, context-window updates, and deprecation dates, sourced daily from LiteLLM's open price file.
Price / call$0.01
Success—
StatusUnknown
How this service works
Recent changes to AI model prices and availability across providers, newest first: price cuts and raises per field (with the change), models added and removed, context-window changes and deprecation dates, for the last 1 to 90 days, optionally by provider or model name. Source: LiteLLM's open price file (MIT), recorded daily. Signed.
Output
A signed, time-ordered list of AI model changes for the requested period, including: per-field price changes (input, output, cache, batch costs) with before/after values, models added or removed, context-window size changes, and deprecation dates. Optionally filtered by provider or model name. Data is sourced daily from LiteLLM's open price file and cryptographically signed.
Example use cases
Cost optimization alert for LLM spend
“Have any of the OpenAI models gotten cheaper or more expensive in the last 7 days? I want to know about price changes so I can update my routing logic.”
Tracking newly released models
“Which new AI models were added across all providers in the past 30 days? I want a list so I can decide if any are worth testing.”
Deprecation deadline monitoring
“Are there any AI models with upcoming deprecation dates announced in the last 30 days? I need to know so I can migrate away from them before they go offline.”
Technical details
Endpoint
GEThttps://api.annalist.dev/v1/ai/changes?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a structured, signed, up-to-date changelog of AI model pricing and availability changes — especially for cost monitoring, deprecation tracking, or model discovery workflows. Prefer it over scraping provider docs or querying static price tables when you need change deltas (what changed and when) rather than a full current price snapshot.
Side effects
- Invalid 'days' value outside 1-90 range returns an error
- Unknown or misspelled provider/model name may return an empty result set
- Payment failure via x402 protocol blocks access
- Stale data if LiteLLM upstream file has not yet been ingested for the current day
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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