| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | Yes | China | Terms | Privacy | 3.3T | 51.5T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.1T | 41.1T | 22 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.1T | 63.9T | 101 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.1T | 31.9T | 104 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.7T | 48.6T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.7T | 27.7T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.2T | 30.0T | 9 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.2T | 26.0T | 13 | |
| No | Retains prompts | Yes | — | Terms | — | 1.2T | 34.3T | 3 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.0T | 33.0T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 832.1B | 25.5T | 53 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 824.6B | 19.0T | 19 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 772.9B | 24.8T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 768.6B | 13.3T | 23 | |
| No | Zero retention | Yes | — | Terms | Privacy | 747.5B | 18.2T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 733.5B | 13.7T | 44 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 728.4B | 11.7T | 11 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 704.2B | 26.1T | 7 | |
| Yes | Retains prompts | No | — | Terms | — | 569.6B | 594.7B | 1 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 523.4B | 14.1T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 494.2B | 11.4T | 71 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 473.2B | 5.4T | 4 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 430.7B | 8.1T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 429.7B | 9.6T | 3 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 392.7B | 13.4T | 8 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 355.7B | 8.1T | 30 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 354.5B | 9.2T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 326.2B | 11.5T | 12 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 322.9B | 9.4T | 45 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 308.2B | 32.0T | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 283.2B | 7.8T | 4 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 258.2B | 3.8T | 19 | |
| No | Zero retention | Yes | — | — | — | 257.3B | 2.3T | 21 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 253.9B | 7.1T | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 233.4B | 12.9T | 40 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 213.8B | 6.0T | 15 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 197.2B | 6.5T | 29 | |
| No | Zero retention | No | United States | Terms | Privacy | 189.2B | 996.4B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 173.0B | 4.3T | 9 | |
| No | Retains prompts | Yes | United States | — | Privacy | 148.6B | 5.2T | 31 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 139.8B | 2.9T | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 131.7B | 1.8T | 3 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 129.9B | 6.5T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 114.8B | 2.1T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 106.3B | 2.0T | 21 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 82.9B | 4.3T | 9 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 78.3B | 5.1T | 42 | |
| No | Zero retention | Yes | France | Terms | Privacy | 75.4B | 2.1T | 30 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 74.9B | 2.8T | 16 | |
| No | Zero retention | No | — | — | — | 71.7B | 2.1T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 70.8B | 1.1T | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 69.3B | 1.1T | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 54.6B | 2.5T | 37 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 48.7B | 1.0T | 21 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 46.5B | 2.9T | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 35.1B | 2.1T | 9 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 34.1B | 1.0T | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 29.0B | 1.4T | 5 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 28.1B | 593.3B | 10 | |
| No | Zero retention | No | — | Terms | Privacy | 27.8B | 1.0T | 4 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 24.2B | 387.3B | 7 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 21.8B | 672.1B | 9 | |
| No | Zero retention | Yes | — | Terms | Privacy | 19.6B | 656.7B | 4 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 19.2B | 635.0B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.2B | 599.0B | 8 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 15.7B | 258.7B | 1 | |
| No | Retains prompts | No | — | Terms | Privacy | 15.2B | 406.0B | 12 | |
| No | Zero retention | No | United States | Terms | Privacy | 14.8B | 160.5B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 14.6B | 478.6B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 9.2B | 426.4B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 7.0B | 179.1B | 2 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 6.4B | 243.5B | 7 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 4.8B | 93.2B | 16 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 3.6B | 15.5B | 4 | |
| No | Retains prompts | No | — | Terms | Privacy | 3.5B | 194.5B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.8B | 62.1B | 3 | |
| No | Zero retention | No | United States | Terms | Privacy | 1.1B | 2.8B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 976.3M | 37.9B | 5 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 918.0M | 28.8B | 6 | |
| No | 30 days retention | No | China | — | Privacy | 916.0M | 45.2B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 914.3M | 45.9B | 10 | |
| No | 30 days retention | No | — | Terms | Privacy | 897.3M | 36.1B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 814.2M | 8.3B | 9 | |
| No | Retains prompts | No | — | — | — | 605.1M | 7.1B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 449.9M | 6.1B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 376.6M | 376.6M | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 113.0M | 12.6B | 2 | |
| No | Retains prompts | No | — | — | — | 61.4M | 3.2B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 55.6M | 2.1B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 19.8M | 1.4B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 18.4M | 318.5M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 13.9M | 200.1M | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 11.5M | 210.2M | 7 | |
| No | Retains prompts | No | United States | Terms | Privacy | 8.0M | 38.9M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 156.1K | 4.7M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 19.8K | 239.3K | 3 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 0 | 0 | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |