Measuring how AI models describe and recommend brands
Evertune runs large prompt panels against major language models to measure how a brand is described, ranked and recommended, and reports on changes over time. Founded by early employees of The Trade Desk and led by CEO Brian Stempeck, it raised a $15M Series A led by Felicis in August 2025.
Evertune was founded in 2024 and is based in New York.
Disclosed funding to date totals $20M. The most recent disclosed round was a Series A of $15M, announced 12 August 2025. Investors on record include Felicis, Eniac Ventures and NextView Ventures.
AI brand visibility platform that repeatedly samples model responses across ChatGPT, Claude, Gemini, Perplexity, Copilot and others to measure how brands are represented, and supports advertising in AI conversations.
Direct and adjacent competitors tracked in the Atlas.
End-to-end AI search optimization platform
Promptwatch is an Amsterdam AI search optimization platform launched in April 2025 that monitors and improves brand presence in AI answers. It raised a EUR 6 million seed round led by Seed + Speed Ventures in July 2026 after a EUR 1.2 million pre-seed; fundingTotalUsd is left null because the amounts were reported in euros.
Corpus engineering for brand representation inside AI models
geoSurge targets how models such as ChatGPT, Gemini and Claude internally learn and represent a brand over time rather than only tracking citations. It raised a $12M seed led by AlbionVC, described at the time as the largest seed round in the GEO category.
Agentic marketing platform for enterprise brands in AI channels
Bluefish processes AI prompts and responses across ChatGPT, Google AI, Claude, Perplexity and Amazon Rufus to show enterprises how their products are portrayed, and turns that into marketing actions. It raised a $20M Series A led by NEA in August 2025 and a $43M Series B co-led by Threshold Ventures and NEA in April 2026.
AI search visibility platform
Cognizo is an AI search visibility platform founded by a team of LLM researchers and marketing operators. Secondary sources report a $1.8M pre-seed round in March 2026.
Answer engine optimization and AI visibility platform for enterprises
Profound measures how brands are mentioned, described and cited by AI assistants such as ChatGPT, Google AI Overviews, Gemini, Claude and Perplexity, and sells optimization and agent-analytics products on top of that data. It raised a $96M Series C at a reported $1B valuation in February 2026.
Brand visibility and influence platform for generative AI surfaces
Brandlight tracks and attempts to influence how brands are represented inside generative AI platforms including ChatGPT, Gemini and Claude. Founded in Israel in late 2024, it raised a $5.75M seed in April 2025 and a $30M Series A led by Pelion Venture Partners in February 2026.