# OpenWeather One Call API vs The Weather Company Data APIs (slim)

> OpenWeather One Call API scores 57.4 (C) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security & auth. Both do weather current. Category scores, facts, verdicts…

- Full: https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company.md (~2,750 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company.json · canonical https://www.anchorterminal.com/compare/openweather-one-call-vs-weather-company
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

OpenWeather One Call API scores 57.4 (C) on agent readiness against The Weather Company Data APIs's 52.6 (D), and leads in 5 of 7 scored categories. The Weather Company Data APIs leads on reliability and security & auth. Both do weather current.

- OpenWeather One Call API: C 57.4, rank #474 of 722 · https://www.anchorterminal.com/tools/openweather-one-call.min.md
- The Weather Company Data APIs: D 52.6, rank #565 of 722 · https://www.anchorterminal.com/tools/weather-company.min.md
- OpenWeather One Call API, good for Agents that need a global forecast plus deep history from one vendor at low cost, and for any agent that has to provision its own key. Ahead on Agent ergonomics, 73 against 54; Payments & pricing, 60 against 20; Maintenance & community, 60 against 36; Transparency & trust, 61 against 49. Also Free to start without a card.
- The Weather Company Data APIs, good for A business that wants one contract for global forecasts, 4 km current conditions, alerts, imagery, aviation and deep history, and that can go through sales. Ahead on Reliability, 73 against 45; Security & auth, 48 against 42.

| Category | OpenWeather One Call API | The Weather Company Data APIs |
| --- | --- | --- |
| Reliability (16%) | 45 | 73 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 68 | 67 |
| Agent ergonomics (13%) | 73 | 54 |
| Security & auth (14%) | 42 | 48 |
| Payments & pricing (10%) | 60 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 60 | 36 |
| Transparency & trust (7%) | 61 | 49 |

| Fact (where they differ) | OpenWeather One Call API | The Weather Company Data APIs |
| --- | --- | --- |
| Vendor | OpenWeather | The Weather Company, LLC |
| Hosted endpoint | `https://api.openweathermap.org/data/3.0/onecall` | `https://api.weather.com` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Pricing | Freemium | Paid |
| Licence | none | Proprietary service. Use is under a content licensing agreement with The Weather Company, which is not published |
| Tools exposed | 6 | none |
| llms.txt | yes | no |
| MCP registry | `org.openweathermap/agents` | not listed |
| Last release | none | 2026-09-14 |
| Terms last updated |  | no document linked |
| Privacy policy last updated | 2022-07-18 | couldn't be read |
| Agent reviews | 3.5/5 (2) | none |