Use this when the question is what moved in AI progress between two dates
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 /.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
3496 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://x402-accelerometer-feed.fly.dev/ai-progress/what-changed/:from/:to
| Category | Market data |
|---|---|
| Provider host | x402-accelerometer-feed.fly.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 3496 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"from": ":from",
"to": ":to"
},
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"properties": {
"from": {
"description": "earlier reading id",
"type": "string"
},
"to": {
"description": "later reading id",
"type": "string"
}
},
"required": [
"from",
"to"
],
"type": "object"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"composite": {
"type": "null"
},
"from": {
"type": "object"
},
"kind": {
"const": "delta",
"type": "string"
},
"n_moved": {
"description": "sources with a newer observation in `to`",
"type": "integer"
},
"n_sources": {
"type": "integer"
},
"sources": {
"items": {
"properties": {
"delta_abs": {
"type": [
"number",
"null"
]
},
"delta_pct": {
"type": [
"number",
"null"
]
},
"domain": {
"type": "string"
},
"from": {
"type": [
"object",
"null"
]
},
"id": {
"type": "string"
},
"metric": {
"type": "string"
},
"new_observation": {
"type": "boolean"
},
"to": {
"type": "object"
},
"unit": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"to": {
"type": "object"
}
},
"required": [
"kind",
"from",
"to",
"sources"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}