| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Retains prompts | Yes | — | Terms | — | 3.2T | 12.3T | 2 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 1.8T | 22.4T | 2 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.8T | 42.9T | 5 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.6T | 63.4T | 109 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.6T | 51.4T | 6 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.5T | 29.2T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.4T | 36.9T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 898.0B | 23.2T | 65 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 886.1B | 8.8T | 7 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 809.5B | 12.3T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 723.9B | 4.7T | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 696.6B | 24.3T | 102 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 614.8B | 11.6T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 588.7B | 11.2T | 19 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 587.1B | 10.1T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 559.5B | 23.8T | 58 | |
| No | Zero retention | Yes | — | Terms | Privacy | 544.2B | 30.1T | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 469.4B | 10.0T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 453.6B | 7.5T | 39 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 430.3B | 10.8T | 69 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 413.1B | 8.0T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 410.1B | 3.4T | 7 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 402.4B | 10.7T | 40 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 345.2B | 9.7T | 39 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 309.2B | 12.9T | 19 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 262.6B | 7.4T | 26 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 259.5B | 6.8T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 231.2B | 6.6T | 6 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 195.5B | 6.0T | 30 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 180.3B | 4.8T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 168.9B | 861.4B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 164.8B | 6.7T | 4 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 163.1B | 5.1T | 4 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 161.9B | 8.5T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 161.1B | 4.6T | 6 | |
| No | Retains prompts | Yes | United States | — | Privacy | 158.5B | 6.4T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 145.7B | 2.0T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 144.9B | 2.2T | 8 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 141.7B | 5.1T | 11 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 119.4B | 2.0T | 30 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 101.1B | 3.9T | 42 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 87.3B | 2.9T | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 83.8B | 2.2T | 38 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 72.2B | 1.1T | 7 | |
| No | Zero retention | No | — | — | — | 71.9B | 1.2T | 6 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 71.1B | 1.3T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 70.1B | 249.4B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 62.9B | 2.8T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 58.4B | 2.6T | 18 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 57.8B | 1.8T | 2 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 56.1B | 1.1T | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 45.5B | 1.1T | 9 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 30.7B | 804.7B | 6 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 26.8B | 539.9B | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 25.8B | 776.4B | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 24.2B | 433.9B | 3 | |
| No | Zero retention | Yes | — | — | — | 20.8B | 246.4B | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 19.6B | 562.3B | 22 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 16.7B | 508.2B | 10 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 16.1B | 997.0B | 7 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 15.6B | 566.1B | 8 | |
| No | Retains prompts | No | — | Terms | Privacy | 14.4B | 400.9B | 9 | |
| No | Zero retention | Yes | — | Terms | Privacy | 14.2B | 460.3B | 7 | |
| No | Zero retention | No | United States | Terms | Privacy | 14.0B | 18.9B | 3 | |
| No | Zero retention | No | United States | Terms | Privacy | 14.0B | 577.3B | 4 | |
| No | Zero retention | No | — | Terms | Privacy | 11.9B | 194.2B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 11.3B | 256.5B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 9.0B | 227.6B | 4 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 7.2B | 96.5B | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 5.9B | 176.9B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 4.6B | 155.7B | 2 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 3.3B | 66.0B | 16 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.5B | 96.9B | 9 | |
| No | Retains prompts | No | — | Terms | Privacy | 1.2B | 38.1B | 3 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.1B | 39.8B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 997.7M | 32.2B | 6 | |
| No | 30 days retention | No | China | — | Privacy | 883.5M | 1.1T | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 490.4M | 28.6B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 293.1M | 23.1B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 217.5M | 5.9B | 8 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 199.2M | 24.8B | 4 | |
| No | Retains prompts | Yes | United States | — | — | 164.1M | 5.5B | 1 | |
| No | Retains prompts | No | — | — | — | 91.2M | 1.5B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 70.9M | 8.9B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 16.9M | 23.9B | 3 | |
| No | 30 days retention | No | — | Terms | Privacy | 11.2M | 315.2M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 4.4M | 17.1M | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.5M | 79.2M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 118.6K | 15.4M | 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 |