Problem #1
The growth operating system for scale-ups
Turn AI marketing output into measurable growth.
Expert-built growth systems, run with you and tested against the metric you’re measured on.
First system live in 14 days Launch fee back when we both hit the milestones Watch the 1:55 demo
- Connectors
- Signals
- Messaging & offers
- Apps
- Experiments
- Metrics
- Objectives
- ICPs & markets
- Knowledge
- Systems
- Playbooks
- Agents
- Customer journey
The team behind GREX has run growth for 130+ companies
See it run
GREX in two minutes.
The problem
Stop missing your growth targets
Your team is producing more output than ever with AI. You still can’t say which of it is working.
60%
of marketers use AI several times a week
<10%
have started capturing value across end-to-end workflows
Source: McKinsey, June 2026.
Three reasons increasing output doesn’t increase growth
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Our solution
We build your AI marketing brain: your data, knowledge and results in one place, so Claude works from your context.
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Problem #2
Nobody has the time or structure to trace activity to results.
Our solution
GREX traces 100% of GTM activities (human or agentic) back to your North Star Metric.
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Problem #3
Teams hack around with AI, on the wrong processes.
Our solution
We have proven growth systems, built by marketing experts and customised to your business.
How it runs
Experiment-led growth aligned to your North Star Metric
- 01
Your tools today.
HubSpot, ads, LinkedIn, analytics, docs, call notes. Lots of data, no shared picture.
- 02
Your context in.
GREX connects them into one AI marketing brain: your data, knowledge and experiment history.
- 03
Systems run. You approve.
Expert-built systems research, draft and publish on a schedule. You approve in one click.
- 04
Experts in the loop.
Your GTM engineer reviews the work weekly. Channel experts tune their systems.
- 05
Every activity traced to your North Star.
Winners get automated, and each run beats the last.
HubSpot
Google Ads
LinkedIn
AnalyticsProof
Real teams, real numbers.
Case study · Dreamknit
A knitting-pattern subscription moved its growth onto GREX. Seven weeks later:
Read the case study806
paying members, up from ~720
~11 hrs
a week of recurring marketing work, now scheduled
19
processes running on a schedule, each with one owner
14.3%
monthly churn, down from ~15%
3 Aug to 22 Sep 2026, from the Dreamknit workspace; hours estimated from logged cycles. Dreamknit was already growing; these moved alongside the work.
Grex has completely changed how I do marketing. I work in Claude, and Grex gives it the whole business to draw on: every system, every number, every play we’ve ever run. I’m moving faster than I ever have, and our cost per demo has more than halved.
Miles ManleyGrowth Lead, KnowledgeXpert It’s really the glue between the different tools that you use when it comes to go-to-market.
Grégoire DelhonCo-founder, Frayt - 9,000+agentic actions run in customers’ GTM stacks
- 1,600+results tied back to a metric change
- 40+expert-built systems
The team behind GREX
Built on six years of running growth for other people.
At Growth Division we ran growth for 130+ startups and scale-ups. GREX’s systems come from that work.
Growth Division case study
NOAN
+400%
trial activations in 6 months
Read the case studyGrowth Division case study
Musiversal
$100k → $1.2M
ARR in 12 months
Read the case studyGrowth Division case study
ElectrAssure
£2m pipeline
in 18 months, after a previous agency produced zero leads
Read the case studyWhat is GREX?
A growth operating system. We connect your tools and knowledge, launch expert-built growth systems customised to your business, and test every activity against your North Star.
Is GREX software or a service?
Both: the platform and systems, a weekly GTM engineer, and channel experts on the systems you add. Service-as-software: built for you, run with you, owned by you.
How fast can we be live?
Your first system is live within 14 days of kickoff. See the day-by-day plan in How we work.
What does it cost?
£3,000 a month for the core plan (platform plus your GTM engineer), plus £500 a month for each channel expert you add. There’s a £3,000 launch fee, which comes back to you when we both hit the launch milestones. See Pricing.
Do we need to use Claude?
GREX works inside Claude today through MCP. It’s headless, so it isn’t tied to one model.
What happens if we leave?
You keep everything: your systems, playbooks, knowledge base, data and experiment log. Pull it any time through the API, or ask and we’ll send a full export in JSON, CSV and plain Markdown, so nothing needs our software to open it. We send one automatically when you leave.
No exit or egress fees, up to 30 days of help moving, and everything is deleted 7 days after you go, with written confirmation. These terms go in your contract. Full exit terms.
Next launch: Week of 3 Nov 2026 · 1 slot left
See what GREX would build for you.
In 30 minutes we find where your go-to-market is leaking and map the first system we’d launch. You leave with a plan whether or not you work with us.