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Liability, to be Paid, Year Four Vested (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Entity Address, City or Town Entity Address, City or Town Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Receivable Type [Axis] Receivable Type [Axis] Number of equal installments Common Stock, Number Of Equal Gifting Installments Common Stock, Number Of Equal Gifting Installments Concentration Risk Type [Axis] Concentration Risk Type [Axis] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Unvested service-based RSUs Restricted Stock Units (RSUs) [Member] Statement of Income Location, Balance [Domain] Statement of Income 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Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Weighted-average remaining contractual life, vested and expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Accrued expenses Accrued Liabilities, Current Member support and operations Member Support And Operations [Member] Member Support And Operations Unvested, beginning balance (in shares) Unvested, ending balance (in shares) Outstanding shares (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Schedule of Deferred Revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Cash flows provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Forfeiture of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Related Party Transactions [Abstract] Marketable securities: Debt Securities, Available-for-Sale, Excluding Accrued Interest Proceeds from sales of marketable securities Proceeds from Sale of Debt Securities, Available-for-Sale Preferred stock, par value (in usd per share) Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Schedule of Weighted-Average Assumptions Schedule of Share-Based Payment Award, Stock Options, 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Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Payment of debt issuance costs related to the credit facility Payments of Debt Issuance Costs Entity Address, State or Province Entity Address, State or Province Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Revenue Revenues [Member] Revenues Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Individual: Individual [Axis] Series D Series D Convertible Preferred Stock [Member] Series D Convertible Preferred Stock Payments revenue Payments Revenue [Member] Payments Revenue Cash flows used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease right of use assets, net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Series E Series E Convertible Preferred Stock [Member] Series E Convertible Preferred Stock Platform-Related Revenue Platform-Related Revenue [Member] Platform-Related Revenue Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Fixed operating lease costs Operating Lease, Cost Capitalization of internal-use software Payments for Software Plan Name [Domain] Plan Name [Domain] Period for recognition over weightage average period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Issuance of common stock upon exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Stockholders’ equity (deficit): Equity [Abstract] Rent expense Operating Lease, Cost, Rent Operating Lease, Cost, Rent Aggregate intrinsic value, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Deferred offering costs not yet paid Deferred Offering Costs Not Yet Paid Deferred Offering Costs Not Yet Paid Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] U.S. agency securities Agency Securities [Member] Weighted Average Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Credit Facility Credit Facility [Member] Credit Facility Per share liquidation preference (in usd per share) Temporary Equity, Liquidation Preference Per Share Settlements of the product obligation Increase (Decrease) in Derivative Liabilities Depreciation and amortization Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Central Index Key Entity Central Index Key PEO Name PEO Name Revenue Revenues Consideration received on transaction Sale of Stock, Consideration Received on Transaction Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Schedule of Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Service based stock options Service Based Stock Options [Member] Service Based Stock Options Revolving Credit Facility Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Other non-current liabilities Other Sundry Liabilities, Noncurrent Computer equipment and purchased software Computer Equipment [Member] Fair Value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value, Rolling Maturity [Abstract] Weighted average exercise price (in usd per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Redeemable convertible preferred stock, $0.0001 par value: No shares authorized, issued, and outstanding as of September 30, 2025. 258,613,394 shares authorized and 258,464,156 shares issued and outstanding with a liquidation preference of $2,894,515 as of December 31, 2024. 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Contingency Accrual, Provision Assets Assets [Abstract] Technology and development Technology And Development [Member] Technology And Development Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Forfeited/Cancelled (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value FAIR VALUE MEASUREMENT Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] Product obligation Derivative Liability, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Technology and development Research and Development Expense Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accrued and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Shares issued net of shares for tax withholdings (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Operating lease liabilities, net of current portion Operating Lease, Liability, Noncurrent Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Member support and operations Member Support And Operations Member Support And Operations Fair Value as of Grant Date Award Grant Date Fair Value Property, Plant and Equipment [Abstract] Registrant Name Entity Registrant Name Beginning balance (in shares) Ending balance (in shares) Redeemable convertible preferred stock, outstanding (in shares) Shares outstanding (in shares) Temporary Equity, Shares Outstanding Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Series Seed Series Seed Convertible Preferred Stock [Member] Series Seed Convertible Preferred Stock Common stock, shares held by related party (in shares) Common Stock, Shares Reserved For Charitable Donation Common Stock, Shares Reserved For Charitable Donation Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Unrecognized stock based compensation Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Forfeited/Cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Total assets Assets, Fair Value Disclosure Greater than 120 Financing Receivable Greater Than 120 Days From Origination [Member] Financing Receivable Greater Than 120 Days From Origination Number of unrealized loss positions Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Number of operating segments Number of Operating Segments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Weighted-average remaining contractual life, outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Axis] Granted (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Aggregate intrinsic value, outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Accounts Receivable Accounts Receivable [Member] Allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss Sale of Stock [Axis] Sale of Stock [Axis] Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Name Trading Arrangement, Individual Name Vested and settled (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested And Settled in Period, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested And Settled in Period, Weighted Average Grant Date Fair Value Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] All Award Types Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Product collateral Increase (Decrease) In Product Collateral Increase (Decrease) In Product Collateral Equity Awards Adjustments Equity Awards Adjustments [Member] Leasehold improvements Leasehold Improvements [Member] Contract With Customer Liability [Roll Forward] Contract With Customer Liability [Roll Forward] Contract With Customer Liability Pension Benefits Adjustments, 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