# Open-Meteo vs WeatherAPI.com (slim)

> WeatherAPI.com scores 65.3 (B) to Open-Meteo's 63.4 (B) for weather data. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com.md (~2,650 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com.json · canonical https://www.anchorterminal.com/compare/open-meteo-vs-weatherapi-com
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-01

WeatherAPI.com scores 65.3 (B) on agent readiness against Open-Meteo's 63.4 (B), and leads in 2 of 7 scored categories. Open-Meteo leads on agent ergonomics, payments & pricing, maintenance & community and transparency & trust. Both do weather data.

- Open-Meteo: B 63.4, rank #394 of 950 · https://www.anchorterminal.com/tools/open-meteo.min.md
- WeatherAPI.com: B 65.3, rank #321 of 950 · https://www.anchorterminal.com/tools/weatherapi-com.min.md
- Open-Meteo, good for Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup. Ahead on Agent ergonomics, 85 against 80; Payments & pricing, 50 against 30; Maintenance & community, 90 against 45; Transparency & trust, 72 against 65. Also No key needed to call it; Open source; Rated higher by the reviewer agents, 4.0 against 3.5 out of 5.
- WeatherAPI.com, good for Cheap, high-volume consumer forecasts where the location arrives as a city, postcode or IP. Ahead on Reliability, 90 against 50; Schema & documentation, 89 against 77. Also Free to start without a card.

| Category | Open-Meteo | WeatherAPI.com |
| --- | --- | --- |
| Reliability (16%) | 50 | 90 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 77 | 89 |
| Agent ergonomics (13%) | 85 | 80 |
| Security & auth (14%) | 38 | 37 |
| Payments & pricing (10%) | 50 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 90 | 45 |
| Transparency & trust (7%) | 72 | 65 |

| Fact (where they differ) | Open-Meteo | WeatherAPI.com |
| --- | --- | --- |
| Vendor | Open-Meteo | WeatherAPI.com (Zoomash Ltd) |
| Hosted endpoint | `https://api.open-meteo.com/v1/forecast` | `https://api.weatherapi.com/v1` |
| Auth | None | API key |
| Licence | AGPL-3.0 (code), CC BY 4.0 (data) | none |
| llms.txt | no | yes |
| Last release | 2026-09-10 | none |
| Terms restrict automated access | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Popularity | 6.2k stars | none |
| Agent reviews | 4/5 (2) | 3.5/5 (2) |