| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 4.1T | 9.7T | 14 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.8T | 44.8T | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.8T | 58.0T | 109 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 1.5T | 27.9T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.4T | 14.3T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.4T | 40.9T | 24 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.3T | 47.0T | 3 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.3T | 31.7T | 9 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 982.6B | 17.3T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 927.7B | 24.4T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 912.6B | 25.4T | 107 | |
| No | Zero retention | Yes | — | Terms | Privacy | 787.2B | 28.0T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 758.3B | 13.3T | 10 | |
| No | Zero retention | Yes | — | Terms | Privacy | 677.0B | 14.0T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 597.1B | 9.8T | 38 | |
| No | Retains prompts | Yes | — | Terms | — | 565.0B | 21.1T | 2 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 500.4B | 9.9T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 493.3B | 9.1T | 16 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 477.1B | 11.5T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 395.3B | 19.0T | 48 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 322.5B | 6.1T | 3 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 320.9B | 4.8T | 43 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 316.9B | 10.2T | 44 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 315.3B | 11.5T | 69 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 309.6B | 6.4T | 31 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 288.5B | 5.2T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 280.4B | 3.4T | 12 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 266.3B | 6.5T | 27 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 234.6B | 11.2T | 41 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 227.7B | 10.0T | 17 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 221.3B | 12.6T | 22 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 218.0B | 6.8T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 212.8B | 7.0T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 200.1B | 5.6T | 8 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 178.3B | 6.4T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 170.6B | 2.1T | 8 | |
| No | Retains prompts | Yes | United States | — | Privacy | 164.4B | 6.2T | 30 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 146.0B | 4.9T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 126.7B | 5.5T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 125.3B | 2.0T | 21 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 83.0B | 2.2T | 37 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 82.5B | 836.9B | 22 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 81.0B | 3.0T | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 75.4B | 2.6T | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 74.2B | 1.4T | 8 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 72.4B | 2.2T | 33 | |
| No | Zero retention | No | United States | Terms | Privacy | 61.2B | 688.9B | 3 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 57.1B | 1.7T | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 57.0B | 360.0B | 5 | |
| No | Zero retention | No | — | Terms | Privacy | 55.6B | 464.8B | 3 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 55.4B | 1.7T | 10 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 52.9B | 1.3T | 7 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 43.6B | 889.6B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 41.1B | 2.6T | 6 | |
| No | Zero retention | No | — | — | — | 38.5B | 1.5T | 6 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 37.3B | 774.5B | 6 | |
| No | Zero retention | Yes | — | — | — | 36.9B | 551.8B | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 33.0B | 665.0B | 4 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 26.9B | 636.4B | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 26.1B | 432.0B | 9 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 23.8B | 895.7B | 3 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 22.1B | 609.4B | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 21.7B | 715.7B | 8 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 21.4B | 567.7B | 10 | |
| No | Zero retention | Yes | — | Terms | Privacy | 17.7B | 489.2B | 7 | |
| No | Retains prompts | No | — | Terms | Privacy | 17.2B | 422.7B | 9 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 14.9B | 163.1B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 13.8B | 342.3B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 9.6B | 187.1B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 7.5B | 166.9B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 5.5B | 44.9B | 1 | |
| No | Retains prompts | No | — | Terms | Privacy | 3.8B | 70.8B | 4 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 3.2B | 80.2B | 16 | |
| No | 30 days retention | No | — | Terms | Privacy | 2.2B | 20.7B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.7B | 14.9B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.3B | 34.8B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.3B | 79.9B | 9 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 944.7M | 32.6B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 548.5M | 24.2B | 4 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 385.3M | 16.5B | 4 | |
| No | 30 days retention | No | China | — | Privacy | 291.4M | 370.6B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 246.8M | 6.1B | 9 | |
| No | Retains prompts | Yes | United States | — | — | 99.7M | 5.1B | 1 | |
| No | Retains prompts | No | — | — | — | 90.2M | 2.0B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 25.8M | 9.1B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 17.4M | 22.8B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 12.2M | 344.7M | 1 | |
| No | 30 days retention | No | — | Terms | Privacy | 7.7M | 314.4M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 6.6M | 118.4M | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 4.6M | 92.7M | 11 | |
| No | Retains prompts | No | United States | Terms | Privacy | 598.1K | 1.6M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 185.1K | 11.5M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 0 | 0 | 2 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |