| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Zero retention | Yes | China | Terms | Privacy | 3.8T | 55.9T | 5 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.9T | 50.5T | 98 | |
| No | 30 day retention | Yes | China | Terms | Privacy | 1.3T | 29.0T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.2T | 26.5T | 65 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 931.8B | 19.6T | 72 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 844.0B | 17.2T | 13 | |
| No | Zero retention | Yes | — | Terms | Privacy | 816.0B | 9.5T | 5 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 662.5B | 23.0T | 8 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 434.1B | 3.0T | 6 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 389.4B | 12.8T | 23 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 370.8B | 14.3T | 102 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 278.9B | 9.5T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 270.3B | 3.7T | 38 | |
| No | 30 day retention | No | United States | Terms | Privacy | 245.2B | 5.5T | 9 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 240.8B | 3.5T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 235.2B | 1.7T | 4 | |
| No | 55 day retention | Yes | United States | Terms | Privacy | 226.1B | 5.5T | 27 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 217.5B | 3.8T | 33 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 215.1B | 17.2T | 21 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 207.5B | 5.7T | 23 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 204.9B | 11.9T | 9 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 198.2B | 4.8T | 39 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 191.1B | 10.8T | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 187.3B | 7.0T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 185.3B | 10.1T | 32 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 177.8B | 5.4T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 173.1B | 6.3T | 17 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 173.0B | 4.6T | 57 | |
| No | Retains prompts | Yes | United States | — | Privacy | 147.1B | 3.0T | 35 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 127.2B | 2.4T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 110.7B | 969.0B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 101.1B | 976.4B | 21 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 100.8B | 1.6T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 86.7B | 2.6T | 4 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 86.6B | 2.9T | 13 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 78.5B | 858.9B | 2 | |
| No | 30 day retention | No | China | — | Privacy | 66.8B | 165.0B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 63.3B | 2.9T | 15 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 62.8B | 717.6B | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 56.6B | 1.4T | 13 | |
| No | 30 day retention | Yes | France | Terms | Privacy | 55.1B | 634.2B | 26 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 55.0B | 1.3T | 33 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 53.0B | 2.1T | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 52.8B | 601.6B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 42.5B | 801.5B | 7 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 39.7B | 968.4B | 17 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 30.3B | 813.3B | 8 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 23.5B | 664.3B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 22.0B | 419.8B | 9 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 20.0B | 118.0B | 7 | |
| No | Zero retention | No | — | — | — | 19.0B | 186.9B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 18.6B | 1.5T | 3 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 17.8B | 691.1B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.3B | 525.9B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 17.0B | 635.3B | 6 | |
| No | Retains prompts | Yes | — | Terms | — | 16.8B | 2.3T | 1 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 14.6B | 346.1B | 9 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 12.2B | 253.3B | 6 | |
| No | Retains prompts | No | — | Terms | Privacy | 11.0B | 238.6B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 10.0B | 263.3B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 8.3B | 198.9B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 8.2B | 78.2B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 6.1B | 106.1B | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.2B | 130.6B | 5 | |
| No | Zero retention | No | United States | Terms | Privacy | 4.6B | 142.0B | 2 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 3.8B | 86.1B | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 3.1B | 185.9B | 7 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 2.1B | 48.2B | 2 | |
| No | 30 day retention | Yes | Israel | Terms | Privacy | 1.9B | 56.0B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.2B | 31.9B | 7 | |
| No | Zero retention | No | United States | Terms | Privacy | 1.0B | 36.3B | 4 | |
| No | Retains prompts | No | — | — | — | 932.5M | 256.1B | 1 | |
| No | Retains prompts | Yes | United States | — | — | 296.0M | 2.0B | 1 | |
| No | 30 day retention | No | — | Terms | Privacy | 221.0M | 7.8B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 147.7M | 1.5B | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 61.5M | 5.1B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 47.4M | 963.0M | 3 | |
| No | Retains prompts | No | — | — | — | 13.8M | 340.7M | 15 | |
| No | 30 day retention | No | — | Terms | Privacy | 10.6M | 327.5M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 1.8M | 301.4M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 592.5K | 16.5M | 3 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |