| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | Yes | China | Terms | Privacy | 3.4T | 48.7T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.4T | 30.8T | 103 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.1T | 63.5T | 99 | |
| No | Zero retention | Yes | China | Terms | Privacy | 2.0T | 48.1T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.0T | 26.4T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.8T | 40.7T | 23 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.2T | 27.1T | 12 | |
| No | Retains prompts | Yes | — | Terms | — | 1.2T | 33.2T | 3 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.1T | 33.0T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.1T | 29.9T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 920.2B | 25.3T | 53 | |
| No | Zero retention | Yes | — | Terms | Privacy | 829.4B | 18.0T | 2 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 816.0B | 25.5T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 774.4B | 18.2T | 19 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 729.5B | 24.4T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 706.3B | 11.1T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 615.6B | 13.3T | 44 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 580.2B | 12.7T | 23 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 574.9B | 13.8T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 539.0B | 11.2T | 71 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 488.3B | 5.0T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 466.0B | 9.2T | 3 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 450.1B | 13.2T | 8 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 418.3B | 9.4T | 45 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 403.0B | 11.6T | 11 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 398.7B | 8.0T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 381.1B | 9.3T | 41 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 367.9B | 8.0T | 30 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 356.3B | 33.4T | 3 | |
| No | Zero retention | Yes | — | — | — | 351.4B | 2.1T | 21 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 301.4B | 3.6T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 296.6B | 4.2T | 9 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 294.2B | 7.7T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 244.9B | 2.8T | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 243.1B | 807.2B | 3 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 216.3B | 6.5T | 12 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 206.6B | 6.5T | 30 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 203.9B | 6.1T | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 189.5B | 13.3T | 40 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 186.4B | 6.9T | 16 | |
| No | Retains prompts | Yes | United States | — | Privacy | 158.4B | 5.3T | 31 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 151.0B | 5.2T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 138.5B | 4.8T | 10 | |
| No | Zero retention | No | United States | Terms | Privacy | 109.6B | 1.1T | 6 | |
| No | Zero retention | No | — | — | — | 97.4B | 2.1T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 96.7B | 2.1T | 20 | |
| No | Zero retention | No | United States | Terms | Privacy | 94.6B | 1.7T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 84.4B | 2.5T | 37 | |
| No | Zero retention | Yes | France | Terms | Privacy | 70.5B | 2.1T | 30 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 68.3B | 2.9T | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 55.9B | 3.0T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 52.5B | 1.0T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 51.9B | 2.0T | 21 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 48.7B | 1.0T | 18 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 45.0B | 1.0T | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 44.4B | 2.1T | 9 | |
| No | Zero retention | No | — | Terms | Privacy | 36.5B | 986.9B | 4 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 33.2B | 1.4T | 5 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 25.5B | 675.8B | 9 | |
| Yes | Retains prompts | No | — | Terms | — | 25.1B | 4.2T | 1 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 24.2B | 657.7B | 7 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 22.3B | 595.6B | 10 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 18.7B | 366.7B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.7B | 431.8B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 16.9B | 645.6B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 16.8B | 473.8B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 16.4B | 608.3B | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 14.9B | 146.0B | 6 | |
| No | Retains prompts | No | — | Terms | Privacy | 14.2B | 191.8B | 4 | |
| No | Retains prompts | No | — | Terms | Privacy | 12.1B | 405.3B | 12 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 7.0B | 243.1B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 6.3B | 178.2B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 5.5B | 59.3B | 3 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 3.3B | 90.5B | 16 | |
| No | 30 days retention | No | — | Terms | Privacy | 2.0B | 36.2B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.2B | 47.4B | 10 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 954.8M | 29.0B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 843.0M | 1.7B | 1 | |
| No | Retains prompts | No | — | — | — | 669.7M | 6.5B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 505.8M | 38.5B | 5 | |
| No | 30 days retention | No | — | Terms | Privacy | 378.9M | 7.7B | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 321.0M | 13.3B | 2 | |
| No | 30 days retention | No | China | — | Privacy | 315.2M | 45.2B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 244.6M | 5.6B | 1 | |
| No | Retains prompts | No | — | — | — | 87.6M | 3.2B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 61.5M | 2.6B | 2 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 29.2M | 12.1B | 4 | |
| No | Zero retention | No | United States | Terms | Privacy | 20.5M | 1.4B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 15.2M | 312.6M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 9.8M | 186.2M | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 8.2M | 203.8M | 7 | |
| No | Retains prompts | No | United States | Terms | Privacy | 6.2M | 30.8M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 197.3K | 4.7M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 19.8K | 219.5K | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 0 | 243.0B | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |