| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | No | — | Terms | — | 3.3T | 10.8T | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.3T | 71.3T | 105 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.7T | 28.2T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.6T | 15.8T | 18 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.1T | 23.3T | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 988.6B | 23.7T | 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 | 24.4T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 765.9B | 25.4T | 77 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 713.0B | 6.4T | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 439.2B | 2.7T | 1 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 409.6B | 14.0T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 376.9B | 5.9T | 62 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 369.3B | 10.7T | 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 | 6.0T | 25 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 346.6B | 9.0T | 10 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 338.7B | 8.3T | 7 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 324.1B | 15.4T | 22 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 287.2B | 7.4T | 8 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 242.3B | 6.4T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 234.1B | 2.5T | 6 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 232.7B | 5.5T | 30 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 206.2B | 19.9T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 196.5B | 9.6T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 192.5B | 7.3T | 35 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 181.2B | 6.6T | 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 | 4.4T | 13 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 171.1B | 5.8T | 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 | 35 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 115.2B | 16.7T | 24 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 93.7B | 809.7B | 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 | 2.4T | 16 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 43.6B | 556.7B | 10 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 39.2B | 1.2T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 38.4B | 1.0T | 7 | |
| No | Zero retention | No | — | — | — | 38.0B | 586.6B | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 28.8B | 1.1T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 27.6B | 661.6B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 26.3B | 849.7B | 8 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 23.2B | 426.7B | 10 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 23.1B | 777.9B | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 22.2B | 1.6T | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 20.9B | 994.8B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 20.4B | 434.7B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 19.6B | 606.9B | 6 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 19.2B | 272.5B | 8 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 19.1B | 941.8B | 29 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 18.0B | 784.2B | 18 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 17.2B | 319.8B | 7 | |
| No | Retains prompts | No | — | Terms | Privacy | 15.1B | 370.9B | 8 | |
| No | Zero retention | Yes | — | — | — | 14.7B | 24.9B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 13.0B | 271.7B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 11.0B | 155.9B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 9.2B | 251.5B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 7.6B | 194.2B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.5B | 185.0B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 5.3B | 18.1B | 3 | |
| No | Zero retention | No | — | Terms | Privacy | 5.0B | 50.0B | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 4.6B | 248.0B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.3B | 127.0B | 9 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 2.6B | 61.9B | 2 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 2.1B | 74.9B | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.0B | 144.6B | 7 | |
| No | Retains prompts | Yes | — | Terms | — | 1.6B | 749.8B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 1.2B | 31.6B | 5 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 869.2M | 52.8B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 821.3M | 32.1B | 7 | |
| No | 30 days retention | No | — | Terms | Privacy | 675.7M | 11.8B | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 304.5M | 19.2B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 165.7M | 6.6B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 126.8M | 1.4B | 2 | |
| No | Retains prompts | Yes | United States | — | — | 126.8M | 5.6B | 1 | |
| No | Retains prompts | No | — | — | — | 44.1M | 594.0M | 16 | |
| No | 30 days retention | No | — | Terms | Privacy | 7.8M | 300.0M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.8M | 64.0M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 668.7K | 19.6M | 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 | 2.1B | 3 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |