Side-by-side comparison of AI visibility scores, market position, and capabilities
Substack is the newsletter and publishing platform that reached $1.1B valuation in July 2025 with 5M paid subscribers and $450M+ in annual writer gross revenue, becoming a major media distribution platform.
Substack is a publishing platform that enables writers, journalists, and creators to publish newsletters and build subscriber communities with integrated payment infrastructure. Founded in 2017 by Chris Best, Hamish McKenzie, and Jairaj Sethi, Substack popularized the creator-owned newsletter model by making it trivially easy to start a paid newsletter, handling payments, delivery, and subscriber management so writers could focus entirely on their content.
Llama 4 open-source model (Scout, Maverick, Behemoth) released March 2026; Meta AI assistant deployed to 700M+ users across WhatsApp, Instagram, Facebook. FAIR research driving multimodal AI advances; $35B AI capex in 2025.
Meta Platforms is a Menlo Park, California-based technology conglomerate operating the world's most widely used social media ecosystem — Facebook (3+ billion monthly active users), Instagram (2+ billion MAU), WhatsApp (2.8+ billion MAU), and Threads (launched 2023) — while investing heavily in virtual reality hardware (Meta Quest), augmented reality glasses (Meta Ray-Ban, Orion AR glasses in development), and AI research (Llama open-source model family). Listed on NASDAQ (NASDAQ: META), Meta generated $164.5 billion in revenue in fiscal year 2024 and employs approximately 74,000 people globally.
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