Quartile vs ElevenLabs
Side-by-side comparison of AI visibility scores, market position, and capabilities
Quartile is an AI-powered advertising platform for Amazon sellers and brands, automating Sponsored Products, Sponsored Brands, and DSP management with patented optimization.
About
Quartile is an advertising technology company headquartered in New York that provides AI-powered advertising optimization for Amazon sellers and brands, automating the management of Sponsored Products, Sponsored Brands, Sponsored Display, and Amazon DSP campaigns through a proprietary six-stage optimization algorithm that the company has filed patents on. Founded in 2019, Quartile targets brands and professional Amazon sellers that are serious enough about Amazon advertising to need algorithmic optimization beyond what Amazon's native campaign bidding provides, but may lack the internal advertising operations expertise or bandwidth to manually optimize the continuous bid management, keyword expansion, and negative keyword maintenance that high-performing Amazon advertising programs require at scale.
$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.
About
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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