Revenue - Strategic Customer Agreement (Q2) (Details) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2025 |
Mar. 31, 2025 |
Jun. 30, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disaggregation of Revenue [Line Items] | ||||||
| Issuance of common stock for contract incentive | $ 350,000 | |||||
| Deferred revenue, current | $ 951,346 | $ 768,927 | $ 249,831 | |||
| Deferred revenue, non-current | 3,896,173 | $ 3,294,977 | $ 1,754,873 | |||
| Common Class A | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Issuance of common stock for contract incentive | $ 350,000 | 350,000 | ||||
| OpenAI OpCo, LLC | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Contract with customer, asset | 11,900,000 | |||||
| Issuance of common stock for contract incentive (in shares) | 8,750,000 | |||||
| OpenAI OpCo, LLC | Prepaid Expenses and Other Current Assets | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Deferred revenue, current | 41,000 | |||||
| OpenAI OpCo, LLC | Other Noncurrent Assets | ||||||
| Disaggregation of Revenue [Line Items] | ||||||
| Deferred revenue, non-current | $ 309,000 |