| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | 30 days retention | Yes | China | Terms | Privacy | 1.5T | 36.1T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.3T | 27.0T | 19 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.2T | 70.7T | 106 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.1T | 62.5T | 6 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.1T | 24.9T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.0T | 20.0T | 103 | |
| No | Zero retention | Yes | — | Terms | Privacy | 737.8B | 25.9T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 584.6B | 2.9T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 572.7B | 23.1T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 508.2B | 25.0T | 76 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 453.5B | 16.0T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 443.6B | 8.9T | 67 | |
| No | Zero retention | Yes | — | Terms | Privacy | 401.0B | 6.1T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 396.7B | 8.5T | 39 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 341.2B | 14.2T | 22 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 337.2B | 8.0T | 11 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 304.3B | 10.7T | 67 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 259.5B | 6.7T | 38 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 232.3B | 5.0T | 6 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 203.4B | 9.4T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 171.6B | 9.5T | 19 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 169.2B | 5.8T | 29 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 167.1B | 6.7T | 27 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 164.5B | 9.4T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 158.6B | 3.3T | 5 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 158.2B | 6.5T | 4 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 150.7B | 5.3T | 4 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 150.7B | 11.9T | 14 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 146.8B | 10.0T | 26 | |
| No | Retains prompts | Yes | United States | — | Privacy | 140.8B | 5.5T | 33 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 120.3B | 4.8T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 118.8B | 1.0T | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 96.7B | 3.7T | 42 | |
| No | Zero retention | No | United States | Terms | Privacy | 70.7B | 469.0B | 3 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 67.0B | 2.6T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 64.3B | 1.6T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 57.0B | 3.2T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 55.5B | 1.8T | 8 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 53.9B | 7.1T | 11 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 52.7B | 932.4B | 7 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 51.4B | 853.7B | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 51.0B | 2.0T | 37 | |
| No | Zero retention | No | — | — | — | 48.8B | 818.6B | 4 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 45.2B | 1.9T | 2 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 43.3B | 1.4T | 29 | |
| No | Zero retention | Yes | — | Terms | Privacy | 38.8B | 1.1T | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 36.1B | 2.0T | 16 | |
| No | Retains prompts | Yes | — | Terms | — | 34.9B | 304.1B | 1 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 28.6B | 411.1B | 9 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 24.8B | 1.1T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 24.0B | 2.6T | 20 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 23.6B | 441.8B | 9 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 21.8B | 1.2T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 19.1B | 7.0T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.7B | 800.4B | 8 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 17.3B | 784.1B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 13.9B | 600.0B | 21 | |
| No | Zero retention | No | United States | Terms | Privacy | 12.9B | 310.0B | 3 | |
| No | Retains prompts | No | — | Terms | Privacy | 12.0B | 393.6B | 9 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 9.7B | 468.0B | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 8.5B | 179.5B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 7.8B | 449.4B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 7.3B | 515.5B | 7 | |
| No | Zero retention | Yes | — | — | — | 7.2B | 96.3B | 1 | |
| No | Zero retention | No | — | Terms | Privacy | 6.6B | 102.0B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 6.1B | 101.1B | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 4.7B | 203.3B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 3.9B | 170.1B | 2 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 3.2B | 73.2B | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 3.2B | 199.5B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.3B | 123.8B | 9 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 2.0B | 68.6B | 16 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.1B | 47.2B | 6 | |
| No | Retains prompts | No | — | Terms | Privacy | 999.3M | 31.6B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 906.9M | 30.6B | 7 | |
| No | 30 days retention | No | — | Terms | Privacy | 539.1M | 17.8B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 485.0M | 31.3B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 390.1M | 8.5B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 301.8M | 441.8M | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 291.5M | 20.7B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 169.4M | 6.0B | 8 | |
| No | 30 days retention | No | China | — | Privacy | 138.8M | 1.5T | 2 | |
| No | Retains prompts | Yes | United States | — | — | 83.2M | 5.6B | 1 | |
| No | Retains prompts | No | — | — | — | 52.0M | 948.8M | 16 | |
| No | Zero retention | No | United States | Terms | Privacy | 15.2M | 24.1B | 3 | |
| No | 30 days retention | No | — | Terms | Privacy | 13.5M | 308.1M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.2M | 67.3M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 134.7K | 18.7M | 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 |