| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | No | — | Terms | — | 5.2T | 24.4T | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.6T | 73.4T | 109 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.7T | 30.4T | 5 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.6T | 71.4T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.5T | 19.6T | 18 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 991.7B | 17.9T | 108 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 836.4B | 23.8T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 795.5B | 24.3T | 63 | |
| No | Zero retention | Yes | — | Terms | Privacy | 730.3B | 24.5T | 12 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 657.5B | 15.1T | 2 | |
| No | Retains prompts | Yes | United States | — | Privacy | 621.0B | 4.8T | 34 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 531.7B | 25.8T | 73 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 482.0B | 8.6T | 8 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 431.2B | 15.4T | 22 | |
| No | Zero retention | Yes | — | Terms | Privacy | 412.7B | 3.8T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 386.9B | 6.8T | 65 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 364.7B | 7.4T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 341.1B | 7.6T | 39 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 334.7B | 10.9T | 67 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 326.0B | 4.8T | 7 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 303.6B | 8.9T | 7 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 297.6B | 6.4T | 27 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 227.7B | 5.7T | 30 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 222.3B | 7.2T | 36 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 212.5B | 3.0T | 5 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 205.2B | 16.9T | 14 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 204.8B | 14.5T | 24 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 204.2B | 9.6T | 19 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 192.7B | 6.7T | 4 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 158.8B | 5.7T | 4 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 157.1B | 5.0T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 148.3B | 1.2T | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 134.7B | 3.9T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 129.7B | 6.5T | 4 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 101.5B | 1.1T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 101.4B | 3.5T | 5 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 92.4B | 2.6T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 63.4B | 2.6T | 20 | |
| No | Zero retention | Yes | — | Terms | Privacy | 62.0B | 2.3T | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 59.0B | 2.0T | 37 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 56.4B | 729.7B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 55.0B | 1.1T | 7 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 54.3B | 661.1B | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 52.4B | 2.2T | 8 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 49.5B | 8.5T | 11 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 46.6B | 1.8T | 2 | |
| No | Zero retention | No | — | — | — | 40.0B | 663.3B | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 38.5B | 1.1T | 10 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 36.1B | 1.3T | 10 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 32.9B | 1.0T | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 32.1B | 593.7B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 26.0B | 843.4B | 8 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 25.6B | 818.6B | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 23.8B | 1.5T | 3 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 23.2B | 455.4B | 9 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 18.1B | 718.5B | 18 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 18.1B | 317.3B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.3B | 449.0B | 6 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 15.3B | 356.2B | 7 | |
| No | Zero retention | No | United States | Terms | Privacy | 12.4B | 286.5B | 3 | |
| No | Retains prompts | No | — | Terms | Privacy | 11.1B | 373.7B | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 8.5B | 264.1B | 3 | |
| No | Zero retention | No | — | Terms | Privacy | 7.1B | 61.3B | 1 | |
| No | Zero retention | Yes | — | — | — | 6.0B | 51.2B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.9B | 182.7B | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 5.8B | 238.0B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 5.5B | 207.2B | 2 | |
| No | Retains prompts | No | — | Terms | Privacy | 4.8B | 11.4B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 4.6B | 173.3B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 3.3B | 21.4B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.2B | 128.7B | 9 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 2.9B | 66.3B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.8B | 108.4B | 7 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 1.7B | 74.2B | 15 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.2B | 50.6B | 6 | |
| No | Retains prompts | Yes | — | Terms | — | 1.2B | 583.2B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 906.0M | 32.1B | 7 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 456.5M | 20.0B | 4 | |
| No | Zero retention | No | United States | Terms | Privacy | 378.1M | 32.7B | 5 | |
| No | 30 days retention | No | China | — | Privacy | 245.4M | 1.5T | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 227.6M | 6.4B | 7 | |
| No | Retains prompts | Yes | United States | — | — | 129.2M | 5.6B | 1 | |
| No | 30 days retention | No | — | Terms | Privacy | 108.4M | 12.8B | 1 | |
| No | Retains prompts | No | — | — | — | 66.2M | 741.7M | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 64.7M | 2.0B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 12.8M | 309.9M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.3M | 58.0M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 719.3K | 19.5M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 0 | 0 | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |