| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Zero retention | Yes | China | Terms | Privacy | 3.3T | 53.8T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.7T | 33.4T | 98 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.6T | 63.2T | 64 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.4T | 30.9T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.2T | 39.4T | 21 | |
| No | Retains prompts | Yes | — | Terms | — | 1.1T | 37.1T | 3 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 988.1B | 32.5T | 10 | |
| No | Zero retention | Yes | — | Terms | Privacy | 955.4B | 24.7T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 884.0B | 31.6T | 9 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 748.6B | 51.1T | 2 | |
| Yes | Retains prompts | No | — | Terms | — | 711.1B | 3.3T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 628.6B | 13.4T | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 621.8B | 18.8T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 595.0B | 20.3T | 20 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 566.4B | 10.2T | 43 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 538.6B | 27.2T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 534.9B | 24.8T | 43 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 516.3B | 14.8T | 23 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 499.5B | 24.6T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 486.3B | 14.4T | 44 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 459.1B | 13.7T | 8 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 438.5B | 6.1T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 402.1B | 11.6T | 12 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 393.1B | 14.4T | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 373.2B | 11.4T | 71 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 336.8B | 11.0T | 40 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 320.5B | 27.7T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 290.4B | 3.5T | 9 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 278.1B | 6.9T | 12 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 262.2B | 7.7T | 4 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 255.4B | 8.4T | 32 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 251.8B | 10.4T | 3 | |
| No | Zero retention | No | United States | Terms | Privacy | 234.5B | 1.6T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 220.0B | 5.1T | 9 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 218.1B | 4.3T | 19 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 206.7B | 6.0T | 15 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 205.4B | 8.8T | 42 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 199.9B | 7.4T | 20 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 181.4B | 7.4T | 16 | |
| No | Retains prompts | Yes | United States | — | Privacy | 128.4B | 4.6T | 31 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 124.0B | 5.0T | 42 | |
| No | Zero retention | Yes | — | — | — | 113.8B | 2.8T | 22 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 107.5B | 6.2T | 29 | |
| No | Zero retention | No | United States | Terms | Privacy | 83.5B | 1.3T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 79.1B | 2.4T | 20 | |
| No | Zero retention | No | United States | Terms | Privacy | 78.6B | 2.0T | 2 | |
| No | Zero retention | No | — | — | — | 75.7B | 2.2T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 69.7B | 2.7T | 2 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 68.1B | 1.2T | 21 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 66.7B | 2.5T | 37 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 48.2B | 2.5T | 13 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 46.9B | 1.3T | 9 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 44.6B | 650.8B | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 38.8B | 2.0T | 21 | |
| No | Zero retention | Yes | France | Terms | Privacy | 36.1B | 1.9T | 29 | |
| No | Zero retention | No | — | Terms | Privacy | 31.8B | 1.1T | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 28.6B | 2.1T | 9 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 26.5B | 681.7B | 9 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 24.2B | 1.0T | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 23.3B | 1.4T | 5 | |
| No | Zero retention | No | United States | Terms | Privacy | 23.0B | 54.9B | 3 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 22.1B | 456.1B | 7 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 21.9B | 328.6B | 1 | |
| No | Zero retention | Yes | — | Terms | Privacy | 16.9B | 487.0B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 16.1B | 575.9B | 8 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 15.7B | 643.6B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 14.0B | 3.7T | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 11.0B | 202.5B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 6.9B | 183.2B | 2 | |
| No | Retains prompts | No | — | Terms | Privacy | 6.1B | 378.6B | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.4B | 392.2B | 6 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 5.3B | 240.1B | 7 | |
| No | Retains prompts | No | — | Terms | Privacy | 4.8B | 202.6B | 3 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 3.4B | 97.9B | 16 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.7B | 70.5B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 2.6B | 10.9B | 1 | |
| No | 30 days retention | No | — | Terms | Privacy | 2.0B | 41.0B | 2 | |
| No | Retains prompts | No | United States | Terms | Privacy | 1.3B | 1.4B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.2B | 37.2B | 5 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 1.1B | 28.9B | 6 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 769.3M | 2.0B | 1 | |
| No | Zero retention | Yes | — | Terms | Privacy | 584.8M | 39.6B | 10 | |
| No | Zero retention | No | United States | Terms | Privacy | 409.1M | 4.4B | 1 | |
| No | 30 days retention | No | China | — | Privacy | 326.3M | 45.0B | 2 | |
| No | Retains prompts | No | — | — | — | 326.1M | 8.7B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 268.5M | 8.5B | 9 | |
| No | Retains prompts | No | — | — | — | 160.2M | 3.4B | 16 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 152.1M | 11.2B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 42.2M | 2.2B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 14.1M | 244.1M | 7 | |
| No | Zero retention | No | United States | Terms | Privacy | 12.4M | 1.4B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 9.7M | 326.2M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 6.6M | 226.9M | 11 | |
| No | Retains prompts | No | United States | Terms | Privacy | 5.2M | 54.8M | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 109.5K | 4.3M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 29.1K | 320.2K | 3 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |