| Trains | Retention | BYOK | Headquarters | Terms of service | Privacy policy | ||||
|---|---|---|---|---|---|---|---|---|---|
| No | Retains prompts | Yes | United States | Terms | Privacy | 3.2T | 60.7T | 99 | |
| Yes | Retains prompts | Yes | China | Terms | Privacy | 3.1T | 42.3T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.9T | 20.2T | 10 | |
| No | Zero retention | Yes | China | Terms | Privacy | 1.8T | 45.6T | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.6T | 27.5T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.3T | 42.2T | 22 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 1.3T | 27.3T | 106 | |
| No | Retains prompts | Yes | — | Terms | — | 1.0T | 29.3T | 2 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 999.5B | 22.6T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 980.7B | 25.3T | 53 | |
| Yes | Retains prompts | Yes | United States | Terms | Privacy | 915.3B | 32.8T | 11 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 793.3B | 23.5T | 12 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 729.8B | 9.2T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 697.8B | 15.6T | 19 | |
| No | Zero retention | Yes | — | Terms | Privacy | 668.3B | 17.2T | 2 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 602.8B | 10.7T | 11 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 556.6B | 12.8T | 29 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 549.5B | 3.0T | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 468.4B | 12.6T | 42 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 462.6B | 11.4T | 22 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 433.2B | 11.8T | 71 | |
| No | Zero retention | Yes | — | Terms | Privacy | 409.8B | 26.0T | 13 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 407.4B | 12.5T | 8 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 336.7B | 7.8T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 330.3B | 14.2T | 47 | |
| No | 55 days retention | Yes | United States | Terms | Privacy | 328.1B | 7.5T | 30 | |
| No | 30 days retention | Yes | China | Terms | Privacy | 305.2B | 38.4T | 3 | |
| No | Retains prompts | Yes | Singapore | Terms | Privacy | 289.6B | 9.5T | 44 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 262.4B | 6.3T | 16 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 256.4B | 7.1T | 4 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 247.1B | 8.1T | 19 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 239.3B | 6.6T | 30 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 229.9B | 6.2T | 14 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 217.3B | 9.8T | 41 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 203.8B | 2.9T | 15 | |
| No | Retains prompts | Yes | United States | — | Privacy | 152.0B | 5.6T | 31 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 147.8B | 4.6T | 4 | |
| No | Zero retention | Yes | Singapore | Terms | Privacy | 123.9B | 5.3T | 43 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 123.1B | 3.4T | 11 | |
| No | Zero retention | No | United States | Terms | Privacy | 117.6B | 1.3T | 3 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 99.4B | 2.5T | 37 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 94.6B | 2.6T | 7 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 94.1B | 1.7T | 22 | |
| No | Zero retention | No | United States | Terms | Privacy | 92.5B | 214.6B | 3 | |
| Yes | Retains prompts | No | — | Terms | Privacy | 84.1B | 1.9T | 2 | |
| No | Zero retention | Yes | — | — | — | 78.7B | 1.4T | 11 | |
| No | 30 days retention | Yes | France | Terms | Privacy | 73.0B | 2.2T | 30 | |
| No | Zero retention | No | United States | Terms | Privacy | 72.3B | 1.1T | 4 | |
| No | Zero retention | Yes | — | Terms | Privacy | 72.2B | 2.0T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 71.5B | 5.0T | 10 | |
| No | 30 days retention | Yes | United States | Terms | Privacy | 68.4B | 3.0T | 15 | |
| No | Zero retention | No | — | — | — | 68.0B | 2.0T | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 67.1B | 3.2T | 5 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 57.4B | 857.1B | 9 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 50.4B | 1.5T | 5 | |
| No | Zero retention | Yes | Netherlands | Terms | Privacy | 48.3B | 896.7B | 18 | |
| No | Zero retention | No | — | Terms | Privacy | 47.7B | 853.6B | 4 | |
| No | Zero retention | Yes | Sweden | Terms | Privacy | 32.6B | 956.4B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 32.1B | 2.0T | 20 | |
| Yes | Retains prompts | Yes | — | Terms | Privacy | 27.8B | 299.8B | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 19.9B | 608.0B | 4 | |
| No | Zero retention | No | Indonesia | Terms | Privacy | 17.1B | 587.2B | 11 | |
| No | Zero retention | Yes | Spain | Terms | Privacy | 15.6B | 704.1B | 6 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 14.9B | 686.6B | 9 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 14.2B | 627.7B | 8 | |
| No | Zero retention | Yes | — | Terms | Privacy | 13.3B | 446.5B | 8 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 12.0B | 243.0B | 1 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 10.6B | 403.7B | 7 | |
| No | Retains prompts | No | — | Terms | Privacy | 10.0B | 415.0B | 12 | |
| No | Retains prompts | Yes | China | Terms | Privacy | 9.3B | 6.3T | 12 | |
| No | Retains prompts | Yes | United States | Terms | Privacy | 8.5B | 237.2B | 6 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 7.0B | 175.8B | 2 | |
| No | Retains prompts | No | — | Terms | Privacy | 5.3B | 167.4B | 4 | |
| No | Zero retention | No | Singapore | Terms | Privacy | 5.2B | 89.0B | 16 | |
| No | Zero retention | No | United States | Terms | Privacy | 4.9B | 85.6B | 4 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 4.2B | 40.0B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 3.0B | 44.9B | 3 | |
| No | 30 days retention | No | — | Terms | Privacy | 2.3B | 37.4B | 2 | |
| No | 30 days retention | No | China | — | Privacy | 1.8B | 46.8B | 2 | |
| No | 30 days retention | Yes | Israel | Terms | Privacy | 951.2M | 29.9B | 6 | |
| No | Zero retention | Yes | — | Terms | Privacy | 773.8M | 53.5B | 10 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 733.1M | 1.9B | 1 | |
| No | Retains prompts | No | — | — | — | 713.7M | 4.4B | 2 | |
| No | Zero retention | No | United States | Terms | Privacy | 394.7M | 14.8B | 4 | |
| No | 30 days retention | No | — | Terms | Privacy | 311.4M | 7.3B | 9 | |
| No | Zero retention | No | United States | Terms | Privacy | 120.2M | 1.1B | 4 | |
| No | Zero retention | No | United States | Terms | Privacy | 100.0M | 552.5M | 1 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 79.6M | 12.8B | 4 | |
| No | Retains prompts | No | — | — | — | 62.0M | 3.0B | 16 | |
| No | Zero retention | Yes | United States | Terms | Privacy | 48.5M | 8.0B | 2 | |
| No | 30 days retention | No | — | Terms | Privacy | 9.7M | 305.2M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 9.2M | 184.6M | 7 | |
| No | Zero retention | Yes | — | Terms | Privacy | 7.7M | 150.8M | 11 | |
| No | Retains prompts | No | United States | Terms | Privacy | 2.2M | 15.7M | 5 | |
| No | Zero retention | Yes | — | Terms | Privacy | 108.9K | 5.8M | 3 | |
| No | Retains prompts | Yes | — | Terms | Privacy | 25.2K | 63.1K | 3 | |
| No | Retains prompts | No | United States | Terms | Privacy | 0 | 0 | 2 |