| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Zero retention | Yes | China | Terms | Privacy | 2.2T | 35.5T | 5 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.4T | 35.9T | 60 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.0T | 19.5T | 8 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 939.5B | 6.1T | 13 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 919.1B | 9.6T | 23 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 696.4B | 23.7T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 568.4B | 20.1T | 72 | |
| No | 30 day retention | Yes | China | Terms | Privacy | 551.7B | 31.0T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 523.3B | 17.0T | 99 | |
| No | Zero retention | Yes | — | Terms | Privacy | 463.1B | 3.7T | 4 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 359.2B | 9.5T | 25 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 357.2B | 10.5T | 9 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 255.2B | 7.7T | 62 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 206.7B | 7.9T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 192.3B | 9.6T | 31 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 171.5B | 11.8T | 3 | |
| No | 30 day retention | No | United States | Terms | Privacy | 155.6B | 3.1T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 154.3B | 6.5T | 22 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 149.0B | 5.6T | 12 | |
| No | 55 day retention | Yes | United States | Terms | Privacy | 134.7B | 5.4T | 25 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 130.6B | 1.3T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 130.4B | 1.9T | 43 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 109.5B | 2.2T | 34 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 103.4B | 3.8T | 51 | |
| No | Zero retention | Yes | — | Terms | Privacy | 99.7B | 2.4T | 19 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 95.3B | 1.4T | 2 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 86.5B | 6.8T | 24 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 68.3B | 554.8B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 67.8B | 1.7T | 11 | |
| No | Retains prompts | Yes | United States | — | Privacy | 63.1B | 2.7T | 35 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 62.7B | 2.6T | 12 | |
| No | Retains prompts | Yes | — | — | — | 55.5B | 3.7T | 1 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 55.2B | 708.3B | 4 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 53.8B | 4.5T | 39 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 40.0B | 243.2B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 39.5B | 398.4B | 12 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 38.6B | 981.6B | 18 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 37.6B | 527.5B | 2 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 35.2B | 2.6T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 31.4B | 1.2T | 32 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 27.1B | 979.5B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 24.8B | 215.6B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 24.2B | 618.6B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 24.0B | 496.9B | 21 | |
| No | Zero retention | Yes | — | Terms | Privacy | 23.6B | 489.1B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 20.7B | 749.1B | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 19.7B | 1.6T | 3 | |
| No | Retains prompts | No | — | — | — | 17.2B | 269.9B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.2B | 464.1B | 6 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 15.3B | 526.4B | 4 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 14.9B | 344.5B | 10 | |
| No | Zero retention | No | — | — | — | 13.0B | 52.0B | 3 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 12.4B | 908.1B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 12.1B | 328.5B | 7 | |
| No | 30 day retention | Yes | France | Terms | Privacy | 10.9B | 432.9B | 28 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 10.0B | 296.0B | 7 | |
| No | Retains prompts | No | — | Terms | Privacy | 9.4B | 144.6B | 5 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 8.2B | 346.1B | 12 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 7.5B | 189.2B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 5.7B | 230.3B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.4B | 168.8B | 2 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 4.0B | 55.7B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 3.8B | 106.8B | 5 | |
| No | Zero retention | No | United States | Terms | Privacy | 3.4B | 216.6B | 1 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.0B | 90.5B | 8 | |
| No | 30 day retention | Yes | Israel | Terms | Privacy | 1.8B | 54.3B | 4 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 1.5B | 66.2B | 14 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 1.3B | 28.1B | 2 | |
| No | 30 day retention | No | China | — | Privacy | 1.3B | 103.2B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 719.3M | 48.7B | 7 | |
| No | Zero retention | No | United States | Terms | Privacy | 367.8M | 48.6B | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 233.6M | 13.1B | 1 | |
| No | 30 day retention | No | — | Terms | Privacy | 222.8M | 7.0B | 6 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 197.8M | 6.3B | 2 | |
| No | Retains prompts | Yes | United States | — | — | 51.2M | 744.8M | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 33.0M | 740.6M | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 23.2M | 6.1B | 1 | |
| No | Retains prompts | No | — | — | — | 7.4M | 318.0M | 15 | |
| No | 30 day retention | No | — | Terms | Privacy | 7.1M | 330.2M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.1M | 323.0M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 777.9K | 9.9M | 3 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |