AI visibility tracking and content engine, YC S24
Gauge is a Y Combinator S24 company offering AI visibility tracking with a built-in content engine, and also operates ProductRank.ai. Secondary sources report a $500K seed round and a subsequent acquisition by XBE; the acquisition has not been confirmed against a primary source.
Gauge was founded in 2024 and is based in San Francisco. It has since been acquired by XBE.
Disclosed funding to date totals $500K. The most recent disclosed round was a Seed of $500K. Investors on record include Y Combinator.
AI visibility platform that runs tracked prompts daily against ChatGPT, Google AI Overviews, AI Mode, Gemini, Perplexity and Microsoft Copilot, with sentiment analysis, an action centre and an agency mode. A separate module measures what coding agents recommend.
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.