Sphere vs Delve
Side-by-side comparison of AI visibility scores, market position, and capabilities
SF YC W22 AI global tax compliance at 30%+ MoM growth since Dec 2024 launch; $25.3M total ($21M a16z Series A Nov 2025) with Stripe native integration serving Deel/Replit/Eleven Labs/Lovable competing with Avalara for automated multi-jurisdiction...
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Sphere is a San Francisco-based AI-powered global tax compliance platform — backed by Y Combinator (W22) with $25.3 million in total funding including a $21 million Series A in November 2025 led by Andreessen Horowitz with Felicis and Y Combinator, following a $4.3 million seed — providing technology companies and global businesses with automated sales tax, VAT, and GST monitoring, registration, calculation, filing, and remittance across 100+ global tax jurisdictions through direct integrations with tax authorities and a proprietary AI Tax Rules and Analysis Model (TRAM) that continuously codifies global tax rules as they change. Launching from stealth in December 2024, Sphere has achieved 30%+ average monthly revenue growth and serves customers including Deel, Replit, Eleven Labs, Lovable, Windsurf, and HeyGen as one of only three tax vendors with native Stripe integration.
SF YC W24 AI compliance automation for SOC 2/HIPAA/ISO/GDPR at $35.8M total ($32M Insight Partners Series A 2025 at $300M val); 500+ companies, profitable, doubling quarterly competing with Vanta and Drata for AI-native evidence collection.
About
Delve is a San Francisco-based AI-native compliance automation platform — backed by Y Combinator (W24) with $35.8 million in total funding including a $3.3 million seed in 2024 from General Catalyst, FundersClub, Soma Capital, and YC, followed by a $32 million Series A in 2025 led by Insight Partners at a $300 million valuation — providing 500+ high-growth companies and Fortune 500 enterprises with AI agents that automatically collect security compliance evidence, map controls to frameworks, and maintain continuous compliance for SOC 2, HIPAA, ISO 27001, GDPR, PCI DSS, and custom regulatory frameworks. Profitable and doubling revenue quarterly, Delve's AI agents continuously gather compliance evidence from connected systems without the API-only approach that limits traditional compliance tools.
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