AI-native fractional CMO
What an AI-native fractional CMO does
An AI-native fractional CMO is a part-time senior growth lead who builds AI into how your go-to-market runs, instead of bolting it on at the end. You get the strategy and judgement of an experienced CMO, plus AI systems that do the research, execution and reporting a bigger team used to need.
That's how I work. I've spent 10+ years building growth teams for more than 100 startups, and I'm now building GREX, an AI growth operating system, so this is the bit of growth I've gone deepest on!
What changes
The job is the same: work out who you sell to, which channels to back and what to stop funding. What changes is how the work gets done, and what you're left with afterwards.
| Traditional | AI-native | |
|---|---|---|
| Context | Spread across tools, docs and people’s heads | One GTM brain: your data, knowledge and results in one place |
| Execution | Done by hand, so it waits for someone to have time | AI agents run the repeatable work on a schedule |
| Reporting | A monthly deck that’s out of date when it lands | Every activity traced back to your North Star metric |
| What you keep | A strategy doc and a playbook | Running systems your team owns when I step back |
Where AI does the work
Research and ICP work
Pulling together what your customers, competitors and own data are telling you, so strategy starts from evidence.
First drafts
Outreach, content and campaign drafts written from your context, ready for a human to sharpen.
CRM and automation
Lead capture, routing and follow ups that run themselves, the kind of system I built for Oddbox.
Experiment tracking
Every channel test logged against its hypothesis and kill threshold, so the winners are obvious.
What AI doesn't replace
- Deciding who you sell to and how you position against everyone else
- Choosing which channels deserve your money, and which to stop funding
- Hiring and coaching the people on your growth team
- Saying no to the shiny thing that won't move your North Star
That's the senior part of the job, and it's still mine. AI just means more of my time goes on it.
Why GREX
Most teams hack around with AI tools and prompts, often on the wrong processes. GREX pulls your tools and knowledge into one GTM brain, so AI works from your context, and traces every activity back to your North Star metric.
AI-native fractional CMO FAQs
What is an AI-native fractional CMO?
An AI-native fractional CMO is a part-time senior growth lead who builds AI into how your go-to-market runs, rather than bolting it on. You get the strategy and judgement of an experienced CMO, plus AI systems and agents that handle research, execution and reporting that would otherwise need a bigger team.
How is it different from a normal fractional CMO?
The strategy job is the same: work out who you sell to, which channels to back and what to stop funding. The difference is what's left behind. Instead of a playbook your team has to find time to run, you end up with systems and agents that keep running from your own context.
Will AI replace my marketing team?
No. AI is very good at the repeatable work and very bad at judgement. Positioning, choosing channels, hiring and deciding what to stop are still human calls. What changes is how much a small team can get done.
What do you use to do this?
Mostly GREX, the AI growth operating system I'm building, which pulls your tools and knowledge into one GTM brain so AI works from your context. It sits alongside the tools you already use, like your CRM and ad platforms.
Want the full picture? See how I work as a fractional CMO, or go back to fractional CMO for startups.