| Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 | Dec 31,
2024 |
|---|
| Revenue from Contract with Customer, Excluding Assessed Tax | - | - | - | - | 808 |
|---|
| Cost of revenue | - | 155 | 1,646 | 1,936 | 1,731 |
|---|
| Research and development | - | 750 | 822 | 937 | 1,176 |
|---|
| Selling, general and administrative | - | 652 | 735 | 797 | 901 |
|---|
| Restructuring charges | - | - | - | 25 | 20 |
|---|
| Total cost and expenses | - | 1,558 | 3,202 | 3,695 | 3,829 |
|---|
| Loss from operations | -2,976,423 | -1,530 | -2,594 | -3,100 | -3,021 |
|---|
| Change in fair value of common stock warrant liability | - | - | - | - | -34 |
|---|
| Equity Securities, FV-NI, Unrealized Gain (Loss) | - | - | - | 6 | -43 |
|---|
| Derivative, Gain (Loss) on Derivative, Net | - | - | - | - | 155 |
|---|
| Interest income | 531,361 | - | 57 | 204 | 213 |
|---|
| Interest expense (including $6,980, $2,159, and $283 to a related party for the years ended December 31, 2024, 2023, and 2022, respectively) | - | - | - | - | 33 |
|---|
| Other income (expense), net | - | -1 | 10 | -0 | -18 |
|---|
| Total other income, net | 536,006 | -1,049 | 1,290 | 272 | 308 |
|---|
| Loss before provision for income taxes | -2,440,417 | -2,580 | -1,304 | -2,827 | -2,713 |
|---|
| Provision for income taxes | 81,422 | 0 | 0 | 1 | 1 |
|---|
| Net loss | -2,521,839 | -2,580 | -1,304 | -2,828 | -2,714 |
|---|
| Accretion of redeemable convertible preferred stock (related party) | - | 2,167 | - | - | 348 |
|---|
| Net loss attributable to common stockholders, basic | - | -4,747 | -1,304 | -2,828 | -3,062 |
|---|
| Change in fair value of dilutive warrants | - | - | -1,254 | - | - |
|---|
| Net loss attributable to common stockholders, diluted | - | - | -2,559 | -2,828 | -3,062 |
|---|
| Earnings Per Share, Basic | - | -6.41 | -0.78 | -1.36 | -1.25 |
|---|
| Earnings Per Share, Diluted | - | -6.41 | -1.51 | -1.36 | -1.25 |
|---|
| Net unrealized gains (losses) on investments, net of tax | - | - | -12 | 13 | 2 |
|---|
| Foreign currency translation adjustments | - | - | - | 4 | -9 |
|---|
| Total other comprehensive income (loss) | - | - | -1,316 | 16 | -7 |
|---|
| Comprehensive loss | - | -2,580 | -1,316 | -2,812 | -2,721 |
|---|
| Accretion of redeemable convertible preferred stock (related party) | - | 2,167 | - | - | 348 |
|---|
| Comprehensive loss attributable to common stockholders | - | - | - | -2,812 | -3,069 |
|---|