v3.26.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Mar. 10, 2026
Jun. 30, 2025
Document Information [Line Items]        
Document Type 10-K      
Amendment Flag false      
Document Period End Date Dec. 31, 2025      
Document Fiscal Year Focus 2025      
Document Fiscal Period Focus FY      
Entity Registrant Name SPIRE GLOBAL, INC.      
Entity Central Index Key 0001816017      
Entity Current Reporting Status Yes      
Entity Voluntary Filers No      
Entity Interactive Data Current Yes      
Current Fiscal Year End Date --12-31      
Entity Filer Category Non-accelerated Filer      
Entity Well-known Seasoned Issuer No      
Entity Public Float       $ 383,608,000
ICFR Auditor Attestation Flag false      
Entity Shell Company false      
Entity Small Business true      
Entity Emerging Growth Company false      
Title of 12(b) Security Class A common stock, par value of $0.0001 per share      
Trading Symbol SPIR      
Security Exchange Name NYSE      
Entity File Number 001-39493      
Entity Incorporation, State or Country Code DE      
Entity Tax Identification Number 85-1276957      
Entity Address, Address Line One 8000 Towers Crescent Drive      
Entity Address, Address Line Two Suite 1100      
Entity Address, City or Town Vienna      
Entity Address, State or Province VA      
Entity Address, Postal Zip Code 22182      
City Area Code 202      
Local Phone Number 301-5127      
Document Annual Report true      
Document Transition Report false      
Document Financial Statement Error Correction [Flag] false      
Auditor Opinion

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheet of Spire Global, Inc. and subsidiaries (the Company) as of December 31, 2025, the related consolidated statement of operations, comprehensive income, changes in stockholders’ equity, and cash flows for the year ended December 31, 2025, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025, and the results of its operations and its cash flows for the year ended December 31, 2025, in conformity with U.S. generally accepted accounting principles.

      
Auditor Firm ID 185 238    
Auditor Name KPMG LLP PricewaterhouseCoopers LLP    
Auditor Location McLean, Virginia Washington, District of Columbia    
Documents Incorporated by Reference [Text Block]

Portions of the registrant’s Definitive Proxy Statement relating to the 2026 Annual Meeting of Stockholders, are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Such Definitive Proxy Statement will be filed with the Securities and Exchange Commission within 120 days after the end of the registrant’s fiscal year ended December 31, 2025.

      
Common Class A [Member]        
Document Information [Line Items]        
Entity Common Stock, Shares Outstanding     33,504,060  
Common Class B [Member]        
Document Information [Line Items]        
Entity Common Stock, Shares Outstanding     1,507,325