For journalists and editors.

One-line

Cillex AI is the specialist agency for advertising on Large Language Model platforms.

Short boilerplate

Cillex AI is the agency for AI advertising. Founded in 2026, the firm runs campaigns, advises strategy, and trains teams across the OpenAI Ads platform, Perplexity, Gemini, and Google AI Overviews — the four advertising surfaces inside the LLMs buyers now use to research and decide. Cillex AI is independent, remote-first, and works with brands in the US, UK, and Australia.

Long boilerplate

Cillex AI is a specialist agency for advertising on Large Language Model platforms. Founded in 2026 in response to OpenAI's self-serve Ads Manager launch, the firm operates exclusively on advertising surfaces inside LLMs — beginning with OpenAI Ads (GA, May 2026), and expanding to Perplexity, Gemini, and Google AI Overviews. Cillex AI offers managed campaign services, audits and strategy consulting, GEO/AEO content engineering, and cohort training for performance marketers. The firm is independent, remote-first, and works with brands across DTC, B2B SaaS, financial services, health, and local services. Cillex AI publishes a canonical Guide to OpenAI Ads, a quarterly Cillex Index of CPC and citation trends, and a weekly newsletter, the Cillex Brief.

Facts

• Name: Cillex AI
• Founded: 2026
• Legal entity: Cillex AI Pty Ltd
• HQ: Sydney, Australia · Remote-first
• Geographies served: US, UK, Australia
• Press contact: press@cillexai.com
• General contact: hello@cillexai.com

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