Document and Entity Information Document Type Document Annual Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Adress Line Two Entity Address, City or Town Entity Address State Or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company ICFR Auditor Attestation Flag Document Financial Statement Error Correction [Flag] Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Auditor Name Auditor Location Auditor Firm ID CONSOLIDATED BALANCE SHEETS Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents Short-Term Investments Short-term investments Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Total prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Operating Lease, Right-of-Use Asset Operating lease right-of-use assets Deferred Costs, Noncurrent Deferred offering costs Other Assets, Noncurrent Other non-current assets Assets Total assets Liabilities and Equity [Abstract] Liabilities, Redeemable Convertible Preferred Stock, and Stockholders' Equity (Deficit) Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses Total accrued expenses Operating Lease, Liability, Current Operating lease liabilities, current portion Less: operating lease liabilities, current portion Liabilities, Current Total current liabilities Operating Lease, Liability, Noncurrent Operating lease liabilities, net of current portion Convertible Notes Payable, Noncurrent Convertible Notes Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (Note 13) Temporary Equity, Carrying Amount, Attributable to Parent Redeemable convertible preferred stock ending balance Redeemable convertible preferred stock beginning balance Redeemable convertible preferred stock (Series A, B), $0.001 par value; 0 shares and 29,723,540 shares authorized as of December 31, 2025 and 2024, respectively; 0 shares and 3,963,910 shares issued and outstanding as of December 31, 2025 and 2024, respectively; aggregate liquidation preference of $0 and $85,902 as of December 31, 2025 and 2024, respectively Redeemable convertible preferred stock Equity, Attributable to Parent [Abstract] Stockholders' Equity (Deficit): Common Stock, Value, Issued Common stock, $0.001 par value; 150,000,000 shares and 58,251,629 shares authorized as of December 31, 2025 and 2024, respectively; 9,381,344, and 2,574,767 shares issued and outstanding as of December 31, 2025 and 2024, respectively Additional Paid in Capital Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Retained Earnings (Accumulated Deficit) Accumulated deficit Equity, Attributable to Parent Ending balance Beginning balance Total stockholders' equity (deficit) Liabilities and Equity Total liabilities, redeemable convertible preferred stock, and stockholders' equity (deficit) Temporary Equity, Par or Stated Value Per Share Redeemable convertible preferred stock, par value (in dollars per share) Temporary Equity, Par Value ( in $ per share) Temporary Equity, Shares Authorized Redeemable convertible preferred stock, shares authorized (in shares) Temporary Equity, Shares Authorized (in shares) Temporary Equity, Shares Issued Redeemable convertible preferred stock ending balance (in shares) Redeemable convertible preferred stock beginning balance (in shares) Redeemable convertible preferred stock, shares issued (in shares) Temporary Equity, Shares Outstanding Redeemable convertible preferred stock, shares outstanding (in shares) Share-Based Payment Arrangement, Recognized Amount [Abstract] Redeemable convertible preferred stock, liquidation Temporary Equity, Liquidation Preference Redeemable convertible preferred stock, aggregate liquidation preference Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Par value per share (in $ per share) Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Ending balance (in shares) Beginning balance (in shares) Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Operating Income (Loss) [Abstract] Operating expenses: Research and Development Expense Research and development General and Administrative Expense General and administrative Operating Expenses Total operating expenses Operating Income (Loss) Loss from operations Investment Income, Net Interest income Interest income Other Nonoperating Income (Expense) Other income (expense), net Pre-tax loss Net loss Net loss Earnings Per Share, Basic Net loss per share attributable to common stockholders, Basic (in dollars per share) Earnings Per Share, Diluted Net loss per share attributable to common stockholders, Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted-average common shares outstanding, Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted-average common shares outstanding, Diluted (in shares) Weighted-average common shares outstanding, Diluted (in shares) Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive loss: OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Unrealized gain on short-term investments Unrealized gain on short-term investments Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) Statement [Table] Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-In Capital Retained Earnings [Member] Accumulated Deficit AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income Revision of Prior Period [Axis] Revision of Prior Period [Domain] Previously Reported [Member] Previously reported Revision of Prior Period, Adjustment [Member] Retroactive application of reverse recapitalization Statement [Line Items] Statement Increase (Decrease) in Temporary Equity [Roll Forward] Redeemable Convertible Preferred Stock Temporary Equity, Elimination as Part of Reorganization Conversion of redeemable convertible preferred stock into common stock in connection with the Merger The number of securities classified as temporary equity that have been converted into permanent equity pursuant to acquisition. Temporary Equity, Shares, Acquisition, Converted To Permanent Equity Conversion of redeemable convertible preferred stock into common stock in connection with the Merger (in shares) Increase (Decrease) in Stockholders' Equity [Roll Forward] CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Exercised Exercise of stock options (in shares) APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Stock-based compensation The gross value of stock issued during the period as a result of the conversion of securities classified as temporary equity pursuant to acquisition. Stock Issued During Period, Value, Acquisition, Conversion Of Temporary Equity Conversion of redeemable convertible preferred stock into common stock in connection with the Merger Number of shares issued during the period as a result of the conversion of securities classified as temporary equity pursuant to acquisition. Stock Issued During Period, Shares, Acquisition, Conversion Of Temporary Equity Conversion of redeemable convertible preferred stock into common stock in connection with the Merger (in shares) Stock Issued During Period, Value, Conversion of Convertible Securities Issuance of common stock upon the conversion of Convertible Notes Stock Issued During Period, Shares, Conversion of Convertible Securities Issuance of common stock upon the conversion of Convertible Notes (in shares) Stock Issued During Period, Value, Acquisitions Issuance of common stock in connection with the Merger Stock Issued During Period, Shares, Acquisitions Number of shares issued to Cara shareholders on acquisition Issuance of common stock in connection with the Merger (in shares) Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Transaction costs in connection with the Merger Transaction costs in connection with the Merger CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Depreciation, Depletion and Amortization Depreciation and amortization expense Share-Based Payment Arrangement, Noncash Expense Stock-based compensation expense Amount of expense (income) related to adjustment to fair value of convertible notes. Fair Value Adjustment Of Convertible Notes Change in fair value of Convertible Notes Amount of non-cash expense for lease. Non Cash Lease Expense Non-cash lease expense Accretion (Amortization) of Discounts and Premiums, Investments Accretion of net discounts on short-term investments Amount of interest accrued on convertible notes. Interest Accrued On Convertible Notes Interest accrued on Convertible Notes Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Increase (Decrease) in Operating Lease Liability Operating lease liabilities Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Short-Term Investments Purchases of short-term investments Proceeds from Sale, Maturity and Collection of Short-Term Investments Maturities of short-term investments Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: The cash inflow associated with the acquisition of business during the period, classified as financing activities. Cash Acquired from Acquisition, Classified As Financing Activities Cash acquired in connection with the Merger Payments of Merger Related Costs, Financing Activities Payments for Merger transaction costs Proceeds from Convertible Debt Proceeds from Convertible Notes Proceeds from Stock Options Exercised Proceeds from exercise of stock options Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net (decrease) increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash and cash equivalents - end of year Cash and cash equivalents - beginning of year Noncash Investing and Financing Items [Abstract] Non-cash investing and financing activities Noncash Merger Related Costs Merger transaction costs included in accounts payable and accrued expenses Conversion of Stock, Amount Converted Conversion of redeemable convertible preferred stock to common stock Debt Conversion, Original Debt, Amount Conversion of Convertible Notes to common stock Nature of the Business and Basis of Presentation Business Description and Basis of Presentation [Text Block] Nature of the Business and Basis of Presentation Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Merger Agreement Business Combination Disclosure [Text Block] Merger Agreement Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Prepaid Expenses and Other Current Assets Other Current Assets [Text Block] Prepaid Expenses and Other Current Assets Intangible Assets Intangible Assets Disclosure [Text Block] Intangible Assets Accrued Expenses The entire disclosure for accrued expenses at the end of the reporting period. Accrued Expenses [Text Block] Accrued Expenses Leases Lessee, Operating Leases [Text Block] Leases Stockholders' Equity (Deficit) Equity [Text Block] Stockholders' Equity (Deficit) Stock-based Compensation and Other Employee Matters Share-Based Payment Arrangement [Text Block] Stock-based Compensation and Other Employee Matters Income Taxes Income Tax Disclosure [Text Block] Income Taxes Net Loss Per Share Earnings Per Share [Text Block] Net Loss Per Share Commitment and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitment and Contingencies No definition available. License Agreements The entire disclosure is about license agreements. License Agreements [Text Block] License Agreements Retirement Savings Plan Retirement Benefits [Text Block] Retirement Savings Plan Segment Reporting Segment Reporting Disclosure [Text Block] Segment Reporting Related-party Transactions Related Party Transactions Disclosure [Text Block] Related-party Transactions Use of Estimates, Policy [Policy Text Block] Use of Estimates Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration of Credit Risk and of Significant Suppliers Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Investment, Policy [Policy Text Block] Short-term Investments Deferred Charges, Policy [Policy Text Block] Deferred Offering Costs Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurements Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Intangible Assets