| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Zero retention | Yes | China | Terms | Privacy | 1.4T | 23.0T | 1 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 1.2T | 22.1T | 97 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.0T | 18.1T | 61 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 669.4B | 30.7T | 70 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 572.8B | 12.4T | 4 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 544.5B | 12.5T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 529.8B | 12.3T | 98 | |
| No | 30 day retention | Yes | China | Terms | Privacy | 513.5B | 31.7T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 437.9B | 11.1T | 30 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 393.9B | 7.0T | 56 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 372.6B | 9.1T | 24 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 369.1B | 4.2T | 20 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 340.7B | 6.0T | 15 | |
| No | 55 day retention | Yes | United States | Terms | Privacy | 275.6B | 4.8T | 25 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 270.6B | 5.7T | 4 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 248.3B | 6.6T | 9 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 242.7B | 3.9T | 38 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 232.1B | 7.4T | 23 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 186.3B | 7.2T | 12 | |
| No | Zero retention | Yes | — | Terms | Privacy | 154.3B | 1.3T | 18 | |
| No | Retains prompts | Yes | United States | — | Privacy | 151.6B | 3.2T | 34 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 144.7B | 1.0T | 3 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 137.7B | 2.3T | 12 | |
| No | Retains prompts | Yes | — | — | — | 125.8B | 6.0T | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 103.3B | 3.2T | 51 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 74.8B | 4.1T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 74.3B | 1.3T | 31 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 63.1B | 1.7T | 39 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 60.4B | 279.5B | 5 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 49.7B | 172.4B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 46.7B | 1.7T | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 43.6B | 916.2B | 32 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 38.8B | 811.8B | 15 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 35.4B | 1.1T | 11 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 32.8B | 411.6B | 2 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 31.4B | 971.3B | 8 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 29.2B | 678.6B | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 25.3B | 655.2B | 10 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 24.9B | 450.3B | 5 | |
| No | 30 day retention | Yes | United States | Terms | Privacy | 20.6B | 295.4B | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 15.8B | 341.0B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 15.5B | 483.6B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 14.6B | 148.3B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 12.9B | 154.3B | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 12.7B | 242.8B | 9 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 12.5B | 436.5B | 14 | |
| No | 30 day retention | No | China | — | Privacy | 12.3B | 70.8B | 2 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 12.3B | 332.7B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 11.0B | 197.4B | 18 | |
| No | 30 day retention | Yes | France | Terms | Privacy | 7.8B | 353.2B | 18 | |
| No | Zero retention | No | United States | Terms | Privacy | 7.2B | 187.8B | 4 | |
| No | Retains prompts | No | — | — | — | 6.7B | 251.4B | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 5.7B | 163.2B | 3 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 5.3B | 193.3B | 6 | |
| No | Zero retention | No | United States | Terms | Privacy | 4.9B | 220.4B | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 4.7B | 18.1B | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 4.1B | 174.6B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 4.0B | 112.5B | 4 | |
| No | Retains prompts | No | — | Terms | Privacy | 3.3B | 100.6B | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.2B | 5.3B | 3 | |
| No | Zero retention | Yes | — | Terms | Privacy | 2.8B | 64.4B | 8 | |
| No | Zero retention | No | United States | Terms | Privacy | 2.4B | 48.0B | 3 | |
| No | 30 day retention | Yes | Israel | Terms | Privacy | 1.8B | 51.9B | 4 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 1.6B | 47.4B | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.6B | 602.4B | 7 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 1.5B | 5.8B | 1 | |
| No | 30 day retention | No | United States | Terms | Privacy | 1.0B | 10.4B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 968.8M | 76.0B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 526.3M | 17.7B | 1 | |
| No | 30 day retention | No | — | Terms | Privacy | 296.3M | 6.2B | 5 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 140.5M | 8.7B | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 44.5M | 9.4B | 1 | |
| No | Retains prompts | Yes | United States | — | — | 13.9M | 1.4B | 1 | |
| No | 30 day retention | No | — | Terms | Privacy | 12.3M | 359.6M | 4 | |
| No | Zero retention | No | United States | Terms | Privacy | 10.2M | 371.4M | 3 | |
| No | Retains prompts | No | — | — | — | 10.1M | 267.3M | 11 | |
| No | Zero retention | Yes | — | Terms | Privacy | 6.6M | 241.3M | 2 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.9M | 125.2M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 439.7K | 2.5M | 3 | |
| No | Retains prompts | Yes | Israel | Terms | Privacy | 0 | 387.6M | 1 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |