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Accelerometer AI Progress Delta
x402
Accelerometer AI Progress Delta is a paid API for AI agents from x402-accelerometer-feed.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-18).
Returns the change in 129 AI-progress time series (benchmarks, compute, AGI odds, model pricing, AI stocks/crypto, energy, space, robotics, research output) between two specified dates
Price / call$0.01
Success—
StatusUnknown
How this service works
Use this when the question is what moved in AI progress between two dates: the acceleration between two readings of 129 series (benchmarks, compute, AGI odds, model pricing, AI stocks and crypto, energy, space, robotics, research output). Per series: from/to value and date, absolute and % change, and whether a new observation landed. Dates are YYYY-MM-DD ids from the free menu at /.
Output
A delta object listing all 129 AI-progress series, each with: the from/to values and their dates, absolute change, percent change, and a boolean flag indicating whether a new observation landed in the target period. Also includes a top-level count of how many series had new observations (n_moved).
Example use cases
Quarterly AI acceleration briefing
“Show me everything that changed in AI between 2024-01-01 and 2024-04-01 — which benchmarks moved, how compute shifted, and whether any new frontier model pricing observations landed.”
Tracking AGI odds shift post-GPT-5
“How much did AGI probability forecasts and frontier benchmark scores change between 2025-01-15 and 2025-03-15? I want the absolute and percent changes for each series.”
AI stock and crypto delta for earnings season
“What happened to AI stocks and crypto between 2024-10-01 and 2024-12-31? Give me the per-series deltas so I can see which names moved the most.”
Technical details
Endpoint
GEThttps://x402-accelerometer-feed.fly.dev/ai-progress/what-changed/:from/:toWhen to prefer
Use this endpoint when you need to quantify what changed across the full AI-progress landscape between two specific snapshot dates — rather than just the current state. Prefer it over the 'latest reading' endpoint when you need directional, comparative analysis (e.g. how much compute grew, whether benchmarks accelerated). It covers 129 series in a single call, making it more efficient than fetching individual series separately.
Side effects
- Invalid date IDs (not matching available reading IDs from the menu at /) return an error or empty delta
- Date range with no available readings returns null or zero-change results
- Network or service downtime on the Fly.dev host
- Payment failure (x402 protocol) blocks the request before it reaches the data layer
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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