Side-by-side comparison of AI visibility scores, market position, and capabilities
GTM data enrichment platform hit $100M ARR in 2 years; raised $100M Series C at $3.1B valuation led by CapitalG; 10K+ customers incl OpenAI, Anthropic
Clay is a GTM data enrichment and outbound automation platform founded in 2021, built on the thesis that go-to-market teams should be able to build sophisticated data workflows without engineering support. The platform acts as a spreadsheet-like interface that connects to 100+ data providers simultaneously — including LinkedIn, Clearbit, Hunter, and custom APIs — allowing sales and growth teams to enrich leads, score accounts, and automate personalized outreach at scale. Clay's core technology is its waterfall enrichment engine, which queries multiple data sources in sequence to maximize coverage and data freshness for any given record.\n\nClay's product is used by growth engineers, demand generation teams, and RevOps professionals at companies ranging from early-stage startups to enterprise accounts. Users build enrichment tables, run AI-generated personalization at scale using built-in Claude and GPT integrations, and push outputs directly into CRMs like Salesforce and HubSpot or sequencing tools like Outreach. Customers include OpenAI, Anthropic, Notion, and hundreds of high-growth B2B companies that have replaced fragmented data stacks with Clay's unified enrichment layer.\n\nClay reached $100M ARR in roughly two years, a milestone that tracks with explosive word-of-mouth adoption in the GTM engineering community. The company raised a $100M Series C at a $3.1B valuation led by CapitalG (Google's independent growth fund) in 2024, with 10,000+ paying customers. Clay has become the default infrastructure layer for modern outbound sales teams and is widely credited with defining the "GTM engineer" job category.
$500M Series D at $11B valuation (Feb 2026) — largest voice AI funding round ever. $330M ARR; 1M+ developers using the API. Enterprise customers: Deutsche Telekom, Revolut, Meta, Salesforce. Voices in 32 languages; real-time cloning from 1 second of audio.
ElevenLabs was founded in 2022 by Piotr Dabkowski and Mati Staniszewski, two former Google and Palantir engineers who set out to break the language barrier using AI voice technology. The company specializes in AI-powered voice synthesis, cloning, and dubbing, enabling developers and enterprises to generate human-quality speech in over 30 languages. Its core technology combines deep learning models trained on massive speech datasets to produce natural-sounding voices indistinguishable from real humans.\n\nElevenLabs offers a suite of products including its flagship text-to-speech API, voice cloning tools, and an AI dubbing platform that localizes video content while preserving the speaker's original voice. Its products target a broad audience—from indie developers building audio apps to large enterprises deploying voice interfaces at scale. Key differentiators include ultra-low latency streaming synthesis, fine-grained voice customization, and a growing library of pre-built AI voices across accents and styles.\n\nElevenLabs has grown rapidly, surpassing $330M in annualized revenue and serving over 1 million developers. Enterprise clients include Deutsche Telekom, Spotify, and leading media companies. In February 2026, the company closed a $500M Series D at an $11B valuation, cementing its position as the market leader in AI voice. Its APIs power podcasts, audiobooks, video games, and customer service bots worldwide, making ElevenLabs the default infrastructure layer for AI-generated audio.
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