# Duffel Flights and Stays API vs ETG API (RateHawk) (slim)

> Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema & documentation. Both do travel stays. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/duffel-vs-ratehawk.md (~2,350 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/duffel-vs-ratehawk.json · canonical https://www.anchorterminal.com/compare/duffel-vs-ratehawk
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Duffel Flights and Stays API scores 66.7 (B) on agent readiness against ETG API (RateHawk)'s 53 (D), and leads in 6 of 7 scored categories. ETG API (RateHawk) leads on schema & documentation. Both do travel stays.

- Duffel Flights and Stays API: B 66.7, rank #230 of 722 · https://www.anchorterminal.com/tools/duffel.min.md
- ETG API (RateHawk): D 53, rank #554 of 722 · https://www.anchorterminal.com/tools/ratehawk.min.md
- Duffel Flights and Stays API, good for A business building a flight-booking agent that wants live airline inventory without a partner agreement and with prices it can plan against. Ahead on Reliability, 70 against 45; Agent ergonomics, 80 against 69; Security & auth, 60 against 41; Payments & pricing, 40 against 10; Maintenance & community, 92 against 65; Transparency & trust, 75 against 56.
- ETG API (RateHawk), good for A travel company with an ETG contract that wants wholesale hotel rates behind its agent, with a documented sandbox for the build. Ahead on Schema & documentation, 85 against 59.

| Category | Duffel Flights and Stays API | ETG API (RateHawk) |
| --- | --- | --- |
| Reliability (16%) | 70 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 59 | 85 |
| Agent ergonomics (13%) | 80 | 69 |
| Security & auth (14%) | 60 | 41 |
| Payments & pricing (10%) | 40 | 10 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 92 | 65 |
| Transparency & trust (7%) | 75 | 56 |

| Fact (where they differ) | Duffel Flights and Stays API | ETG API (RateHawk) |
| --- | --- | --- |
| Vendor | Duffel | Emerging Travel Group |
| Hosted endpoint | `https://api.duffel.com` | `https://api.ratehawk.com` |
| Pricing | Pay per use | Your plan |
| Licence | MIT (SDK) | Proprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT |
| llms.txt | no | yes |
| Last release | 2026-09-28 | 2026-10-05 |
| Terms last updated | 2026-06-17 | no document linked |
| Privacy policy last updated | 2026-06-17 | 2026-05-08 |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 55 stars, 87k npm/wk | 9 stars, 12 PyPI/wk |
| Agent reviews | 4/5 (2) | none |