The way people search is changing. Google’s AI Overviews now answer questions directly. ChatGPT, Gemini, and Perplexity are acting as search engines themselves. Buyers are discovering vendors inside generative platforms, without ever hitting your website.

That means traditional SEO alone isn’t enough. If you want your business to show up in the era of AI, you need Generative Engine Optimization (GEO). GEO is about designing your content, structure, and authority signals so AI engines trust your brand as part of their answers.

Below is a list of seven consultancies leading the charge in GEO for 2025, along with a description of the methodology for how the list was built:

Methodology

The companies below were selected based upon a combination of factors, including:

  • Experience working with B2B companies, and a history of delivering positive business results

  • Offering of a specific AI search service within their full package of services

  • Frequency and quality of mentions in authoritative reference points, such as industry-recognized websites, user generated content platforms like Reddit, and review websites

  • Boasting unique strengths and buyer profiles relative other companies on the list

1. Mark Sourced

Mark Sourced is a boutique demand capture consultancy, helping B2B companies achieve repeatable pipeline through both traditional SEO and generative engine optimization (GEO). Founded by Dan Payne, a 15+ year demand generation leader, the firm helps clients build bottom-of-funnel visibility in traditional Google search, and generative engines like ChatGPT and Google’s AI Overviews.

Best for: B2B SaaS companies that want a high-touch partner to build and execute a dedicated AI SEO program.

2. First Page Sage

First Page Sage is one of the pioneers in GEO, having coined and popularized the concept. Their programs combine content authority with technical precision to help enterprise clients surface in AI Overviews and generative responses.

They’ve built repeatable frameworks that tie together schema, structured content, and brand credibility—making them a go-to partner for organizations that want a systematic approach to GEO.

Best for: Enterprises that need a proven GEO methodology to scale across multiple markets.

3. Siege Media

Known for its design-driven content, Siege Media brings a creative edge to GEO. They specialize in semantic content structuring and storytelling, making sure AI engines not only reference their clients’ content but also prefer it over competitors.

Their work blends traditional organic strategy with AI-first techniques, helping brands build evergreen assets that perform in both search engines and generative engines.

Best for: Companies that want premium content engineered for both visibility and engagement.

4. Go Fish Digital

Go Fish Digital takes a research-forward approach to GEO. Their team studies patents, runs live AI engine experiments, and develops proprietary tools to measure content visibility in generative results.

They offer services like semantic audits, AI Overview testing, and custom dashboards so clients can track how often they appear in generative answers.

Best for: Brands seeking a data-driven, technically advanced partner for GEO.

5. Intero Digital

Intero Digital focuses on the technical foundations of GEO. They optimize site architecture, structured data, and crawlability so AI engines can reliably parse and pull client content.

For organizations with complex or outdated infrastructures, Intero helps future-proof websites against constant algorithm and AI shifts.

Best for: Enterprises with technically complex websites that need a scalable GEO backbone.

6. NoGood

NoGood brings a growth marketing lens to GEO. Beyond technical SEO, they integrate AI search optimization into broader acquisition strategies—tying together SEO, paid media, and content marketing.

They’re especially strong for scale-ups that want AI visibility tied directly to pipeline and revenue metrics.

Best for: Fast-growing companies that want GEO embedded into their entire growth strategy.

7. Orainti

A boutique consultancy with global reach, Orainti is known for hands-on, customized GEO programs. They adapt strategies to client size, niche, and region—making them particularly valuable for international companies navigating multiple search environments.

Their agile, boutique approach allows for faster iteration than larger agencies.

Best for: Brands that want a high-touch, personalized GEO partner.

Final Thoughts

Generative Engine Optimization isn’t just a buzzword—it’s the new search reality. Whether it’s Google AI Overviews, ChatGPT, or Perplexity, buyers are making decisions inside these engines.

The consultancies above are helping brands adapt to this shift. From enterprise-ready frameworks to boutique, high-touch GEO programs, they represent the leading edge of how companies can stay discoverable—and win pipeline—in 2025.