| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Zero retention | Yes | China | Terms | Privacy | 3.1T | 60.5T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.7T | 37.7T | 98 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.3T | 64.2T | 64 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.0T | 40.3T | 22 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 1.8T | 49.8T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.5T | 35.0T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.3T | 32.5T | 9 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.3T | 26.5T | 13 | |
| No | Zero retention | Yes | China | Terms | — | 1.1T | 29.8T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 959.9B | 24.5T | 50 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 914.5B | 31.4T | 10 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 770.2B | 11.4T | 43 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 729.6B | 23.8T | 12 | |
| No | Zero retention | Yes | — | Terms | Privacy | 721.9B | 19.7T | 2 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 689.1B | 23.2T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 683.1B | 20.4T | 17 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 681.6B | 15.1T | 23 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 624.3B | 15.1T | 46 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 612.1B | 15.1T | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 570.3B | 11.6T | 73 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 522.3B | 9.5T | 39 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 519.5B | 12.5T | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 504.2B | 4.0T | 26 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 503.7B | 13.6T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 471.8B | 14.3T | 9 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 434.0B | 5.3T | 18 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 364.3B | 11.2T | 3 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 362.8B | 8.9T | 35 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 356.7B | 8.5T | 42 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 294.9B | 7.3T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 287.0B | 5.6T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 260.2B | 4.2T | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 255.1B | 2.5T | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 238.9B | 7.6T | 4 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 235.7B | 6.2T | 15 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 232.4B | 28.4T | 9 | |
| No | Zero retention | Yes | France | Terms | Privacy | 206.1B | 1.9T | 29 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 179.4B | 1.9T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 172.9B | 7.7T | 16 | |
| No | Zero retention | No | United States | Terms | Privacy | 165.6B | 2.4T | 2 | |
| No | Retains prompts | Yes | United States | — | Privacy | 137.7B | 4.5T | 29 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 137.1B | 5.8T | 27 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 130.1B | 1.5T | 11 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 117.5B | 6.9T | 14 | |
| No | Zero retention | No | — | — | — | 103.1B | 2.3T | 7 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 102.6B | 2.5T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 97.0B | 2.7T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 90.7B | 2.5T | 37 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 84.1B | 1.5T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 79.3B | 2.5T | 2 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 77.7B | 4.8T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 57.0B | 3.2T | 8 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 49.8B | 6.9T | 4 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 46.7B | 773.5B | 11 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 46.6B | 1.1T | 6 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 41.0B | 536.2B | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 31.3B | 2.0T | 9 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 30.2B | 689.9B | 7 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 29.4B | 1.2T | 5 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 27.2B | 694.5B | 9 | |
| No | Zero retention | No | — | Terms | Privacy | 25.0B | 1.1T | 4 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 22.4B | 419.3B | 1 | |
| No | Retains prompts | Yes | South Korea | Terms | Privacy | 21.0B | 21.0B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 19.6B | 571.9B | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 16.5B | 509.8B | 8 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 10.8B | 250.4B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 9.6B | 374.5B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 8.6B | 196.5B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 8.3B | 116.4B | 3 | |
| No | Retains prompts | No | — | Terms | Privacy | 7.3B | 354.5B | 12 | |
| No | Zero retention | No | United States | Terms | Privacy | 6.5B | 227.0B | 5 | |
| No | 30 days retention | No | China | — | Privacy | 5.5B | 48.4B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.4B | 50.6B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 4.8B | 85.9B | 3 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 4.2B | 101.9B | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.6B | 38.8B | 5 | |
| No | Retains prompts | No | — | Terms | Privacy | 2.1B | 214.8B | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.9B | 37.2B | 10 | |
| No | Retains prompts | No | United States | Terms | Privacy | 1.5B | 17.0B | 1 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.1B | 29.6B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.1B | 18.2B | 1 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 541.8M | 4.4B | 1 | |
| No | Retains prompts | No | — | — | — | 505.6M | 10.8B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 372.5M | 41.1B | 3 | |
| No | 30 days retention | No | — | Terms | Privacy | 293.6M | 8.8B | 9 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 86.9M | 11.0B | 4 | |
| No | Retains prompts | No | — | Terms | Privacy | 79.9M | 3.7B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 16.9M | 2.1B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 14.5M | 1.4B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 11.7M | 325.1M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 11.1M | 242.2M | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 9.6M | 288.2M | 7 | |
| No | Retains prompts | No | United States | Terms | Privacy | 5.9M | 73.3M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 167.5K | 4.5M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 21.3K | 531.3K | 3 | |
| No | Zero retention | No | United States | Terms | Privacy | 18.0K | 18.0K | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |