| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | No | — | Terms | — | 3.3T | 7.2T | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.3T | 71.2T | 105 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.7T | 28.7T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.6T | 15.0T | 18 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.1T | 23.1T | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 988.6B | 23.4T | 8 | |
| No | Zero retention | Yes | China | Terms | Privacy | 978.3B | 72.5T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 898.2B | 16.5T | 111 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 770.9B | 24.9T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 765.9B | 25.4T | 77 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 713.0B | 6.1T | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 439.2B | 2.3T | 1 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 409.6B | 14.1T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 376.9B | 5.6T | 62 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 369.3B | 10.8T | 67 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 354.6B | 7.0T | 10 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 350.0B | 5.9T | 25 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 346.6B | 9.0T | 10 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 338.7B | 8.0T | 7 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 324.1B | 15.5T | 22 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 287.2B | 7.1T | 8 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 242.3B | 6.3T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 234.1B | 2.3T | 6 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 232.7B | 5.6T | 30 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 206.2B | 21.2T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 196.5B | 9.6T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 192.5B | 7.4T | 35 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 181.2B | 6.3T | 39 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 179.6B | 3.7T | 42 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 178.0B | 2.6T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 176.7B | 4.3T | 13 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 171.1B | 5.9T | 4 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 142.4B | 5.1T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 128.7B | 3.5T | 5 | |
| No | Retains prompts | Yes | United States | — | Privacy | 128.4B | 4.0T | 34 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 115.2B | 17.1T | 24 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 93.7B | 725.8B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 74.4B | 2.6T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 74.3B | 1.9T | 36 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 62.4B | 2.2T | 9 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 53.6B | 1.8T | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 51.3B | 2.5T | 16 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 43.6B | 532.6B | 10 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 39.2B | 1.2T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 38.4B | 992.9B | 7 | |
| No | Zero retention | No | — | — | — | 38.0B | 568.5B | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 28.8B | 1.1T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 27.6B | 649.4B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 26.3B | 861.9B | 8 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 23.2B | 423.0B | 10 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 23.1B | 772.4B | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 22.2B | 1.7T | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 20.9B | 993.6B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 20.4B | 438.3B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 19.6B | 608.2B | 6 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 19.2B | 258.7B | 8 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 19.1B | 955.8B | 29 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 18.0B | 812.5B | 18 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 17.2B | 308.4B | 7 | |
| No | Retains prompts | No | — | Terms | Privacy | 15.1B | 370.8B | 8 | |
| No | Zero retention | Yes | — | — | — | 14.7B | 17.9B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 13.0B | 273.9B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 11.0B | 149.2B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 9.2B | 252.1B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 7.6B | 184.8B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.5B | 188.4B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 5.3B | 14.9B | 4 | |
| No | Zero retention | No | — | Terms | Privacy | 5.0B | 47.3B | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 4.6B | 254.5B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.3B | 130.8B | 9 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 2.6B | 61.7B | 2 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 2.1B | 77.3B | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.0B | 150.7B | 7 | |
| No | Retains prompts | Yes | — | Terms | — | 1.6B | 810.1B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 1.2B | 31.2B | 5 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 869.2M | 53.7B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 821.3M | 32.9B | 7 | |
| No | 30 days retention | No | — | Terms | Privacy | 675.7M | 11.6B | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 304.5M | 18.7B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 165.7M | 6.7B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 126.8M | 1.2B | 2 | |
| No | Retains prompts | Yes | United States | — | — | 126.8M | 5.5B | 1 | |
| No | Retains prompts | No | — | — | — | 44.1M | 554.1M | 16 | |
| No | 30 days retention | No | — | Terms | Privacy | 7.8M | 301.7M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.8M | 157.2M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 668.7K | 19.2M | 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 | — | Terms | Privacy | 0 | 0 | 3 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |