All four domains have public benchmark feeds, but only container rates and trial registries publish on a firm calendar

Asked:

“What public data sources exist for benchmarking cloud GPU prices, EV charging networks, clinical trial outcomes, and container shipping rates, and how frequently is each updated?”

This report curates 29 recommended sources from research inventories of 1,533 extracted source records (536 cloud-compute pricing, 213 EV charging, 280 clinical-trial, 504 container-shipping rows), assembled from live web research on 2026-10-09 across many independent hosts. It is a curated selection of established primary publishers, not an exhaustive census; “public” ranges from fully open APIs to free latest values with paid history.

Source options by domain and published update cadence

Provider price catalogs — docs.aws.amazon.com, learn.microsoft.com and docs.cloud.google.com — are the authoritative GPU price feeds, yet none of the three publishes a fixed refresh interval: the catalogs are current or change-driven, and the API being always queryable is not the same as the data refreshing on a schedule.
US EV charging has an unusually clear anchor: the DOE/NREL Station Locator imports networked-station data via API daily (afdc.energy.gov), while EV-ChART adds federally funded charger uptime and session reporting on quarterly, annual and one-time schedules (driveelectric.gov).
Trial outcome benchmarking can run on a daily clock: ClinicalTrials.gov refreshes Monday–Friday by about 9 a.m. ET (clinicaltrials.gov) and its AACT relational mirror is rebuilt daily with downloadable snapshots (aact.ctti-clinicaltrials.org).
Container rates have the clearest market calendar of the four domains: Freightos FBX and Xeneta XSI-C are daily, Drewry WCI publishes Thursdays, SCFI generally Fridays at 15:00 Beijing time (en.sse.net.cn), Ningbo NCFI every Friday except Chinese holidays (balticexchange.com), and Xeneta's contract index is monthly.

The 29 recommended sources

Domain	Source	Publisher	Coverage	Access method	Access level	Stated update frequency	Link

Cloud GPU pricing

Provider catalogs are the ground truth for list prices, and all three hyperscalers expose them publicly: AWS Price List bulk files in JSON/CSV, Azure Retail Prices as an unauthenticated REST API, and Google's Cloud Billing Catalog API (API key required). None states a fixed data-refresh cadence — the catalogs are maintained as prices change. Spot GPU prices on Google Cloud can change up to once a day, and EC2 Capacity Blocks reservation prices are revised on a published schedule driven by supply and demand. Market and comparison layers (ComputePrices, Vast.ai live pricing, FinOpsForge's monthly index) add cross-provider and GPU-marketplace context but are secondary publishers.

Best starting stack: AWS Price List Bulk API + Azure Retail Prices API + Google Cloud Billing Catalog API for authoritative SKU prices, with a comparison feed such as ComputePrices or Vast.ai for marketplace GPUs. Caveats: AWS keeps historical price-list versions, but Azure and Google catalogs return current prices only, so building history means archiving your own pulls; Google's catalog needs an API key; comparison services are freemium with paid history; catalogs give list prices, not negotiated or spot-auction outcomes.

EV charging networks

For the United States and Canada, the DOE/NREL Alternative Fueling Station Locator is the primary open dataset, importing networked-station data daily by API and verifying non-networked stations every other year. EV-ChART adds performance data — uptime, sessions, outages, costs — but only for federally funded chargers, on quarterly/annual/one-time reporting cycles. In Europe, AFIR rules push operators toward near-real-time open data (dynamic status within one minute), EAFO publishes monthly datasets, and the UK combines OCPI-mandated 30-second status data with quarterly DfT statistics. Open Charge Map offers global community coverage with no fixed cadence.

Best starting stack: Station Locator API (US/Canada baseline) + EV-ChART (US reliability/session data) + EAFO and national portals for Europe + Open Charge Map for global fill-in. Caveats: most listings sources describe stations, not reliability — EV-ChART is the exception and covers only federally funded chargers; community data is continuously edited and uneven; Zap-Map-style commercial feeds with live availability are not openly licensed; geographic coverage outside North America and Europe is thin.

Clinical trial outcomes

ClinicalTrials.gov is the only registry here with structured results data at scale — outcome measures, analyses and adverse events — refreshed every business day, and AACT mirrors the full registry into a 40+-table relational database daily (free account required for credentials). WHO ICTRP aggregates registries worldwide with weekly updates and bulk CSV/XML download. European coverage comes from EMA's CTIS (publication updates processed overnight; no bulk API stated) and the legacy EudraCT/EU CTR, where results publish two weeks after sponsor posting and no extraction API is offered. ISRCTN adds UK-anchored records with CSV and XML API access.

Best starting stack: ClinicalTrials.gov API + AACT for SQL-ready outcomes, ICTRP weekly download for multinational breadth, CTIS for EU trials since 2022. Caveats: only a subset of registered trials post tabular results; ICTRP holds registration data with results links rather than structured outcomes; AACT needs registration; EudraCT offers no API and CTIS access is via the web portal; machine access and cadence vary sharply across national registries.

Container shipping rates

This domain publishes on the firmest calendar. Spot benchmarks: Freightos FBX computes daily at 06:00 UTC and publishes at 14:00 UTC (freemium — exports and granular lanes are paid); Xeneta's XSI-C publishes daily median FAK prices at 16:15 London time. Weekly indices: Drewry WCI on Thursdays; Shanghai's SCFI generally each Friday at 15:00 Beijing time (free latest composite, paid history at CNY 15,000/year); SCFIS settled-rate indices on Mondays; Ningbo NCFI every Friday except Chinese holidays; CCFI weekly for China's overall export market. Xeneta's XSI contract-market index is monthly, covering long-term contract rates.

Best starting stack: FBX (daily spot), Drewry WCI + SCFI (weekly cross-checks), Xeneta XSI contract index (monthly contract-market view). Caveats: most indices are freemium — latest composite values are free but route-level detail and history require subscription; SCFI/CCFI historical data is paid; publication dates shift around Chinese statutory holidays; spot and contract indices measure different markets and should not be mixed in one benchmark series.

Method: curated from four research inventories extracted from live web pages on 2026-10-09 (536 cloud-pricing, 213 EV-charging, 280 clinical-trial and 504 container-shipping rows across many independent hosts). 29 established primary or high-value secondary sources were selected; duplicate records of the same source and weak blog restatements were cut. “Stated update frequency” quotes or condenses each publisher's own wording; where none is published the source is shown as “no explicit published cadence” rather than inferred. Counts in the matrix are the number of curated sources per cadence bucket, not all records.

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