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Related Party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Related party outstanding balance: |  |  |
Accounts receivable | $ 400,209 | $ 339,754 |
Prepaid expenses and other current assets | 330,356 | 348,774 |
Other non-current assets | 1,149,274 | 981,764 |
Accounts payable | 248,977 | 158,435 |
Accrued and other liabilities | $ 634,447 | $ 640,207 |
Related parties | Loans to and interest receivable |  |  |
Related Party Transactions |  |  |
Loan agreement term | 5 years | 5 years |
Related party outstanding balance: |  |  |
Other non-current assets | $ 438,470 | $ 358,485 |
Total of expenses | 544,128 | 446,985 |
Other related parties |  |  |
Related Party Transactions |  |  |
Costs and expenses | 31,600 | 32,800 | $ 33,900
Related party outstanding balance: |  |  |
Accounts receivable | 39,700 | 39,600 |
Accounts payable | 30,800 | 25,000 |
Accrued and other liabilities | 5,300 | 5,600 |
Other related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Prepaid expenses and other current assets | 105,658 | 88,500 |
Credit losses recognized (reversal) | $ 0 | $ 1,500 | $ (2,100)
SINA | Related parties |  |  |
Related Party Transactions |  |  |
Loan agreement term | 1 year | 1 year | 1 year
Loan to SINA | $ 753,000 | $ 966,600 | $ 1,105,700
Loan repaid by SINA | 773,519 | 970,877 | 1,071,100
Revenue | 36,120 | 46,630 | 66,810
Costs and expenses | 31,724 | 33,157 | 36,483
Interest Income, Operating | 10,847 | 13,070 | 14,913
Related party outstanding balance: |  |  |
Amount due from SINA | 441,143 | 452,769 |
SINA | Related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Amount due from SINA | 401,900 | 417,700 |
SINA | Related parties | Revenue billed through |  |  |
Related Party Transactions |  |  |
Revenue | 22,816 | 26,758 | 41,557
SINA | Related parties | Revenue from services provided to |  |  |
Related Party Transactions |  |  |
Revenue | 13,304 | 19,872 | 25,253
SINA | Related parties | Costs and expenses incurred by Weibo but paid by SINA |  |  |
Related Party Transactions |  |  |
Costs and expenses | 25,500 | 38,500 | 24,900
SINA | Related parties | Costs and expenses related to certain of SINA's activities for which Weibo made the payments |  |  |
Related Party Transactions |  |  |
Costs and expenses | 8,100 | 8,600 | 9,900
Alibaba | Related parties |  |  |
Related Party Transactions |  |  |
Services provided by Alibaba | 29,639 | 22,521 | 23,366
Related party outstanding balance: |  |  |
Accounts receivable | 45,812 | 43,495 |
Company A | Other related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Prepaid expenses and other current assets | 88,500 | 88,500 |
Company B | Other related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Other non-current assets | 408,281 | 358,485 |
Other related parties | Other related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Prepaid expenses and other current assets | 17,158 | 0 |
Other non-current assets | $ 30,189 | 0 |
Minimum | Related parties |  |  |
Related party outstanding balance: |  |  |
Annual interest rate | 1.00% |  |
Minimum | SINA | Related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Annual interest rate | 1.00% |  |
Maximum | Related parties |  |  |
Related party outstanding balance: |  |  |
Annual interest rate | 6.00% |  |
Maximum | SINA | Related parties | Loans to and interest receivable |  |  |
Related party outstanding balance: |  |  |
Annual interest rate | 4.00% |  |
Advertising and marketing revenues | Other related parties |  |  |
Related Party Transactions |  |  |
Revenue | $ 24,200 | 41,800 | 32,700
Advertising and marketing revenues | SINA | Related parties |  |  |
Related Party Transactions |  |  |
Revenue | 14,311 | 25,022 | 45,319
Advertising and marketing revenues | Alibaba | Related parties |  |  |
Related Party Transactions |  |  |
Revenue | 173,834 | 116,785 | 111,608
Value-added services revenues | Other related parties |  |  |
Related Party Transactions |  |  |
Revenue | 3,200 | 3,300 | 2,700
Value-added services revenues | SINA | Related parties |  |  |
Related Party Transactions |  |  |
Revenue | $ 21,809 | $ 21,608 | $ 21,491

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