{"uid":"cap_pNggkdi1MHQR0d_fOaeYz","slug":"accelerometer-ai-progress-time-series-historical-snapshot-by-date-846bb447","name":"Accelerometer AI-Progress Time Series — Historical Snapshot by Date","description":"Readings of AI progress: dated snapshots of 129 public AI-progress and technology time series (frontier benchmark scores, compute trends, AGI prediction-market odds, model pricing, AI stocks and crypto, energy, space, robotics, biomed, research output), and the acceleration between any two readings. Paid with USDC on Base via x402.","url":"https://x402-accelerometer-feed.fly.dev/ai-progress/as-of/%7Bid%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"stub":false,"run_at":"2026-07-12T14:00:05.754191+00:00","domains":["agents","autonomy","benchmarks","biomed","capital","compute","crypto","ecosystem","energy","industrial","inference","macro","markets","narrative","patents","prediction","pricing","research","robotics","science","space"],"sources":[{"id":"agents.x402_services_count","url":"https://agentic.market","unit":"count","access":"free_api","domain":"agents","latest":1779,"metric":"x402 pay-per-request services (agentic.market)","cadence":"weekly survey, accumulating","n_points":8,"previous":1525,"confidence":"verified","first_date":"2026-04-21","latest_date":"2026-07-12","previous_date":"2026-07-05","signal_quality":"strong","delta_pct_vs_previous":16.6557},{"id":"autonomy.metr_time_horizon_50","url":"https://github.com/METR/cross-domain-horizon (data/external/logistic_fits/headline.csv; METR 'Measuring AI Ability to Complete Long Tasks', metr.org/blog/2025-03-19-measuring-ai-ability-to-complete-long-tasks/)","unit":"minutes","access":"dataset_download","domain":"autonomy","latest":112.230447,"metric":"METR frontier task-completion horizon @50% (minutes)","cadence":"updated as METR re-fits new models","n_points":15,"previous":54.226342,"confidence":"verified","first_date":"2019-02-14","latest_date":"2025-04-16","previous_date":"2025-02-24","signal_quality":"strong","delta_pct_vs_previous":106.9667}],"composite":null,"n_sources":129,"emitted_at":"2026-09-16T11:54:41+00:00","snapshot_id":"2026-07-12","n_sources_ok":126,"composite_note":"No cross-source composite is offered. Each row is one source's latest observation as pulled at run_at, with its previous observation and the % change between them.","schema_version":"0.2"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__9OBpoZCwOaahjanJMSDJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a dated snapshot of 129 AI-progress and technology time series as they stood on a specific past date, including benchmark scores, compute trends, prediction market odds, pricing, and acceleration metrics between readings.","exampleAgentPrompt":"Pull the Accelerometer AI-progress snapshot for July 12 2026 — I want to see all 129 time series readings as they stood on that date, including the benchmark scores, compute trends, and acceleration percentages.","exampleUseCases":[{"title":"Quarterly AI progress retrospective report","prompt":"Get me the Accelerometer AI-progress snapshot from January 1 2026 so I can compare where all the key benchmarks and compute metrics stood at the start of the year."},{"title":"Verify AGI prediction market odds on a past date","prompt":"What were the AGI prediction market odds and METR task horizon scores on March 19 2025 according to the Accelerometer feed? Pull that historical snapshot for me."},{"title":"Benchmark AI acceleration between two specific dates","prompt":"Fetch the Accelerometer snapshot dated April 21 2026 — I need the delta percentages across all 129 AI-progress series so I can see how fast things were moving at that point."}],"resultDescription":"A JSON object containing a dated snapshot of up to 129 AI-progress and technology time series, each with its latest observed value as of the requested date, its previous observation, the percentage change between them, source URL, unit, domain tag, confidence rating, signal quality, and cadence description. Also includes run metadata: snapshot_id, run_at, emitted_at, list of domains covered, and a composite note.","failureModes":["Snapshot date not found — if the requested date has no pre-computed snapshot, the endpoint may return a 404 or empty result","Payment failure — if the x402 USDC payment on Base is not completed or is invalid, the request is rejected","Date format error — malformed date string in the {id} path parameter returns a 400 error","One or more sources unavailable — n_sources_ok may be less than n_sources if upstream data sources were unreachable at snapshot time","Future date requested — requesting a date beyond available snapshots returns an error or empty stub"],"whenToPreferThis":"Choose this endpoint when you need AI-progress data anchored to a specific historical date rather than the current moment. It is ideal for retrospective analysis, auditing what benchmarks showed at a past date, verifying prediction market odds historically, or computing acceleration between two dated snapshots. Prefer the /latest endpoint when you only need the most current readings without specifying a date.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-18T06:30:12.795Z","isFirstParty":false}