Cover Page - USD ($) $ in Millions	12 Months Ended
Cover Page - USD ($) $ in Millions	Dec. 31, 2025	Mar. 06, 2026	Jun. 30, 2025
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-39139
Entity Registrant Name	CURIOSITYSTREAM INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-1797523
Entity Address, Address Line One	8484 Georgia Ave
Entity Address, Address Line Two	Suite 700
Entity Address, City or Town	Silver Spring
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20910
City Area Code	301
Local Phone Number	755-2050
Title of 12(b) Security	Common Stock, par value $0.0001
Trading Symbol	CURI
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 179.7
Entity Common Stock, Shares Outstanding		58,974,338
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive proxy statement relating to its annual meeting of stockholders to be held in 2026 (the “2026 Annual Meeting”), expected to be filed with the Securities and Exchange Commission (the “SEC”) on or before April 29, 2026 (and, in any event, not later than 120 days after the close of our last fiscal year), are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein. Except with respect to information specifically incorporated by reference in this Annual Report on Form 10-K, such proxy statement is not deemed to be filed as part hereof.
Entity Central Index Key	0001776909
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	false

CuriosityStream Inc. 10-K