| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| Yes | Retains prompts | No | — | Terms | — | 3.6T | 10.8T | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 2.1T | 71.3T | 105 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.4T | 28.2T | 5 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.2T | 23.3T | 8 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.1T | 72.5T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.0T | 15.8T | 18 | |
| No | Zero retention | Yes | — | Terms | Privacy | 868.6B | 23.7T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 655.4B | 16.5T | 111 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 586.9B | 24.4T | 62 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 574.2B | 25.4T | 77 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 508.8B | 14.0T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 449.0B | 6.4T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 417.3B | 5.9T | 62 | |
| No | Zero retention | Yes | — | Terms | Privacy | 386.7B | 2.7T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 347.9B | 6.6T | 39 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 315.1B | 9.0T | 10 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 284.3B | 8.3T | 7 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 273.1B | 10.7T | 67 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 268.5B | 7.4T | 8 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 241.7B | 7.0T | 10 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 233.5B | 6.4T | 3 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 229.0B | 15.4T | 22 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 203.3B | 9.6T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 197.6B | 2.5T | 6 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 185.0B | 6.0T | 25 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 167.1B | 5.8T | 4 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 166.0B | 5.5T | 30 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 138.6B | 4.4T | 13 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 135.7B | 5.1T | 13 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 134.4B | 19.9T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 132.2B | 7.3T | 35 | |
| No | Retains prompts | Yes | United States | — | Privacy | 111.3B | 4.0T | 35 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 107.1B | 16.7T | 24 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 103.1B | 3.7T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 102.1B | 3.5T | 5 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 99.4B | 2.6T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 83.8B | 809.7B | 6 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 50.7B | 1.8T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 49.8B | 2.2T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 46.8B | 1.9T | 36 | |
| No | Zero retention | Yes | — | Terms | Privacy | 46.4B | 2.4T | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 42.5B | 2.6T | 20 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 39.9B | 556.7B | 10 | |
| No | Zero retention | No | — | — | — | 30.3B | 586.6B | 5 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 29.1B | 777.9B | 6 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 27.9B | 942.0B | 29 | |
| No | Zero retention | Yes | — | Terms | Privacy | 25.0B | 1.1T | 9 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 24.7B | 1.2T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 24.2B | 1.0T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 23.7B | 661.6B | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 20.7B | 606.9B | 6 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 20.3B | 426.7B | 10 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 19.1B | 994.8B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.4B | 849.7B | 8 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 14.7B | 784.2B | 18 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 13.8B | 272.5B | 8 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 13.2B | 319.8B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 12.1B | 434.7B | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 11.9B | 1.6T | 3 | |
| No | Retains prompts | No | — | Terms | Privacy | 10.5B | 370.9B | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 9.8B | 194.2B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 9.7B | 271.7B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 9.1B | 155.9B | 6 | |
| No | Zero retention | Yes | — | — | — | 7.0B | 24.9B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 3.6B | 185.0B | 1 | |
| No | Zero retention | No | United States | Terms | Privacy | 3.2B | 18.1B | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 3.0B | 248.0B | 6 | |
| No | Zero retention | No | — | Terms | Privacy | 2.6B | 50.0B | 1 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.6B | 127.0B | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 2.6B | 251.5B | 2 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 2.3B | 61.9B | 2 | |
| No | Retains prompts | No | — | Terms | Privacy | 2.1B | 2.1B | 3 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 2.0B | 74.9B | 15 | |
| No | Retains prompts | Yes | — | Terms | — | 1.7B | 749.8B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.5B | 144.6B | 7 | |
| No | Zero retention | No | United States | Terms | Privacy | 1.3B | 31.6B | 5 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 971.1M | 52.8B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 775.4M | 32.1B | 7 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 620.8M | 19.2B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 186.0M | 11.8B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 170.8M | 1.4B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 145.9M | 6.6B | 7 | |
| No | Retains prompts | Yes | United States | — | — | 78.0M | 5.6B | 1 | |
| No | Retains prompts | No | — | — | — | 52.2M | 594.0M | 16 | |
| No | 30 days retention | No | — | Terms | Privacy | 7.7M | 300.0M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.3M | 64.0M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 826.5K | 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 | United States | Terms | Privacy | 0 | 0 | 2 |