| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | No | — | Terms | — | 5.2T | 34.9T | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.2T | 73.6T | 107 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.2T | 23.4T | 19 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.6T | 32.6T | 5 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 879.7B | 24.1T | 8 | |
| No | Zero retention | Yes | China | Terms | Privacy | 872.7B | 69.8T | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 791.3B | 24.9T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 745.1B | 24.2T | 63 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 694.7B | 7.9T | 67 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 566.3B | 15.7T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 534.0B | 18.1T | 103 | |
| No | Zero retention | Yes | — | Terms | Privacy | 503.1B | 4.9T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 468.8B | 25.5T | 74 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 401.0B | 8.0T | 39 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 383.8B | 7.7T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 350.9B | 1.7T | 6 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 339.9B | 11.0T | 67 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 323.8B | 6.7T | 27 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 288.2B | 15.2T | 22 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 270.7B | 9.3T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 256.9B | 7.1T | 36 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 247.0B | 8.0T | 11 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 241.0B | 5.8T | 30 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 229.0B | 9.6T | 19 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 224.6B | 14.5T | 14 | |
| No | Retains prompts | Yes | United States | — | Privacy | 223.0B | 5.2T | 33 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 199.7B | 9.0T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 187.0B | 5.0T | 7 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 176.3B | 13.2T | 25 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 169.4B | 3.9T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 147.5B | 1.3T | 8 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 146.5B | 5.5T | 4 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 135.5B | 5.0T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 107.2B | 6.6T | 4 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 100.7B | 1.3T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 95.8B | 3.4T | 5 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 95.5B | 2.6T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 72.0B | 2.0T | 37 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 63.9B | 801.6B | 6 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 62.0B | 749.5B | 10 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 59.1B | 6.6T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 57.7B | 3.1T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 51.4B | 2.1T | 8 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 48.3B | 1.9T | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 46.6B | 2.2T | 16 | |
| No | Zero retention | Yes | — | Terms | Privacy | 37.4B | 1.1T | 6 | |
| No | Zero retention | No | — | — | — | 33.5B | 712.8B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 30.3B | 2.6T | 20 | |
| No | Zero retention | No | United States | Terms | Privacy | 30.1B | 320.2B | 3 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 29.8B | 1.3T | 10 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 26.8B | 975.5B | 7 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 25.2B | 826.5B | 6 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 24.6B | 393.7B | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 20.0B | 818.4B | 8 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 18.9B | 470.4B | 9 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 16.1B | 660.6B | 18 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 15.9B | 347.7B | 10 | |
| No | Zero retention | No | United States | Terms | Privacy | 15.3B | 281.6B | 3 | |
| No | Retains prompts | No | — | Terms | Privacy | 15.0B | 384.3B | 9 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 12.8B | 1.4T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 11.5B | 445.0B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 11.3B | 564.5B | 7 | |
| No | Zero retention | No | — | Terms | Privacy | 11.1B | 80.9B | 1 | |
| No | Zero retention | Yes | — | Terms | Privacy | 6.9B | 217.5B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.9B | 180.6B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.6B | 171.4B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 4.6B | 228.2B | 6 | |
| No | Retains prompts | No | — | Terms | Privacy | 4.4B | 25.3B | 3 | |
| No | Zero retention | Yes | — | — | — | 4.4B | 69.1B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 4.1B | 6.7B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 3.7B | 96.4B | 7 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 2.8B | 68.9B | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.4B | 128.0B | 9 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 2.3B | 71.3B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.6B | 31.7B | 7 | |
| No | 30 days retention | No | — | Terms | Privacy | 1.4B | 14.5B | 2 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.2B | 49.2B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 1.0B | 33.0B | 4 | |
| No | Retains prompts | Yes | — | Terms | — | 715.2M | 432.1B | 1 | |
| No | 30 days retention | No | — | Terms | Privacy | 206.8M | 6.3B | 8 | |
| No | 30 days retention | No | China | — | Privacy | 194.2M | 1.5T | 2 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 111.9M | 20.1B | 4 | |
| No | Retains prompts | Yes | United States | — | — | 67.2M | 5.5B | 1 | |
| No | Retains prompts | No | — | — | — | 54.4M | 825.5M | 16 | |
| No | Zero retention | No | United States | Terms | Privacy | 15.4M | 24.2B | 3 | |
| No | 30 days retention | No | — | Terms | Privacy | 10.2M | 310.7M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.0M | 59.9M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 760.5K | 19.7M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 0 | 0 | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |