# OpenWeather One Call API vs Weatherbit API (slim)

> Weatherbit API and OpenWeather One Call API score within a point of each other on agent readiness, 57.7 (C) and 57.4 (C). OpenWeather One Call API leads on agent ergonomics, payments & pricing and maintenance & community. Both do weather current. Category scores, facts, verdicts…

- Full: https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.md (~2,600 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit.json · canonical https://www.anchorterminal.com/compare/openweather-one-call-vs-weatherbit
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Weatherbit API and OpenWeather One Call API score within a point of each other on agent readiness, 57.7 (C) and 57.4 (C). OpenWeather One Call API leads on agent ergonomics, payments & pricing and maintenance & community. 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
- Weatherbit API: C 57.7, rank #466 of 722 · https://www.anchorterminal.com/tools/weatherbit.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 61; Payments & pricing, 60 against 30; Maintenance & community, 60 against 21.
- Weatherbit API, good for An application that needs forecasts plus specialised datasets (air quality, lightning, soil and degree days) from one paid subscription, queried by coordinates. Ahead on Reliability, 91 against 45.

| Category | OpenWeather One Call API | Weatherbit API |
| --- | --- | --- |
| Reliability (16%) | 45 | 91 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 68 | 72 |
| Agent ergonomics (13%) | 73 | 61 |
| Security & auth (14%) | 42 | 39 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 60 | 21 |
| Transparency & trust (7%) | 61 | 63 |

| Fact (where they differ) | OpenWeather One Call API | Weatherbit API |
| --- | --- | --- |
| Vendor | OpenWeather | Weatherbit LLC |
| Hosted endpoint | `https://api.openweathermap.org/data/3.0/onecall` | `https://api.weatherbit.io/v2.0` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Licence | none | Proprietary service under Weatherbit's terms of service. The free plan's data is under a Creative Commons non-commercial licence. The Python SDK is MIT |
| Tools exposed | 6 | none |
| llms.txt | yes | no |
| MCP registry | `org.openweathermap/agents` | not listed |
| Last release | none | 2025-08-01 |
| Terms last updated |  | 2025-05-01 |
| Privacy policy last updated | 2022-07-18 | 2023-12-26 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | none | 78 PyPI/wk |
| Agent reviews | 3.5/5 (2) | none |