| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Zero retention | Yes | — | Terms | Privacy | 2.3T | 27.9T | 11 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.8T | 70.1T | 106 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 1.7T | 37.7T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.7T | 28.5T | 19 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.3T | 61.4T | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.2T | 4.0T | 7 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 1.0T | 25.1T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 940.3B | 20.6T | 103 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 698.7B | 23.1T | 64 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 576.8B | 24.9T | 76 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 538.7B | 3.8T | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 518.7B | 6.7T | 1 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 518.1B | 16.2T | 2 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 452.5B | 8.3T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 441.5B | 8.7T | 39 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 399.6B | 9.7T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 354.9B | 9.1T | 67 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 346.1B | 5.2T | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 336.3B | 6.6T | 38 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 326.0B | 14.0T | 22 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 313.1B | 10.6T | 67 | |
| No | Retains prompts | Yes | United States | — | Privacy | 282.1B | 5.8T | 30 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 271.8B | 9.1T | 26 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 267.8B | 11.3T | 14 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 258.1B | 6.8T | 27 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 250.7B | 9.4T | 7 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 221.4B | 5.9T | 29 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 175.8B | 9.6T | 19 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 150.4B | 1.8T | 7 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 138.6B | 6.5T | 4 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 138.5B | 4.8T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 137.1B | 1.1T | 6 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 133.3B | 5.2T | 4 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 112.0B | 3.7T | 42 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 105.8B | 2.6T | 14 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 93.7B | 1.5T | 29 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 85.2B | 6.3T | 11 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 78.0B | 1.1T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 72.8B | 1.8T | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 61.5B | 526.4B | 3 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 58.9B | 900.7B | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 56.6B | 2.0T | 37 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 56.6B | 3.1T | 5 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 53.4B | 1.9T | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 48.9B | 2.0T | 16 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 41.9B | 1.2T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 40.8B | 7.0T | 4 | |
| No | Zero retention | No | — | — | — | 39.6B | 849.3B | 4 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 39.5B | 945.3B | 7 | |
| No | Retains prompts | Yes | — | Terms | — | 37.9B | 299.0B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 34.1B | 2.6T | 20 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 30.4B | 441.5B | 10 | |
| No | Zero retention | Yes | — | Terms | Privacy | 30.3B | 1.1T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 26.6B | 806.5B | 8 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 25.5B | 464.6B | 9 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 24.7B | 794.1B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 23.7B | 602.4B | 21 | |
| No | Zero retention | No | United States | Terms | Privacy | 23.2B | 330.8B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 17.7B | 447.1B | 6 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 15.6B | 471.8B | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 14.5B | 191.0B | 5 | |
| No | Retains prompts | No | — | Terms | Privacy | 14.5B | 391.7B | 9 | |
| No | Zero retention | Yes | — | Terms | Privacy | 9.7B | 509.5B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 8.6B | 106.4B | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 8.5B | 204.9B | 3 | |
| No | Zero retention | Yes | — | — | — | 7.4B | 103.7B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 6.2B | 169.0B | 2 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 6.0B | 200.0B | 6 | |
| No | Zero retention | No | — | Terms | Privacy | 4.8B | 106.7B | 1 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 3.5B | 75.1B | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.5B | 122.9B | 9 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 2.0B | 67.3B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.6B | 31.4B | 7 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.1B | 46.4B | 6 | |
| No | 30 days retention | No | — | Terms | Privacy | 960.5M | 18.7B | 2 | |
| No | Retains prompts | No | — | Terms | Privacy | 901.7M | 32.5B | 3 | |
| No | 30 days retention | No | China | — | Privacy | 892.2M | 1.5T | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 790.5M | 30.9B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 514.2M | 9.0B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 309.0M | 750.8M | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 284.9M | 20.9B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 252.0M | 6.1B | 8 | |
| No | Retains prompts | Yes | United States | — | — | 158.9M | 5.6B | 1 | |
| No | Retains prompts | No | — | — | — | 90.3M | 1.0B | 16 | |
| No | Zero retention | No | United States | Terms | Privacy | 20.6M | 24.1B | 3 | |
| No | 30 days retention | No | — | Terms | Privacy | 12.5M | 311.3M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 5.1M | 71.3M | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 153.5K | 18.1M | 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 |