For Marketing Agencies

Your clients need executive thought leadership. This is how you deliver it at scale.

Every B2B executive needs to be visible: it's how deals start, how trust is built, and how businesses grow. But until now, delivering it profitably meant choosing between quality and margin.

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See It In Action

Audiences follow people, not logos. The brands you build need voices behind them — real ones. Delivering that across every client, at your quality bar, is the hard part.

Agencies should own executive thought leadership. Here's what keeps breaking.

Most agencies know it. But knowing it and being able to deliver it profitably are two different things.

The Economics Problem

Too expensive to offer well

Thought leadership can take 10-15 hours per client per week to do right. At that rate, it's often unprofitable — so most agencies either left it on the table or outsourced it to freelancers. Agent C lets you bring it back in-house and keep the margin — and the quality control.

The Quality Problem

The alternatives don't hold up

Generic AI takes rounds of re-prompting and still produces content that sounds like everyone else. Ghostwriters can cost $5K+ per exec, and even good ones operate outside your workflow. Either way, you've lost oversight of strategy and voice.

The Relationship Problem

If you don't cover this, someone else will

When an outside ghostwriter or DIY tool enters the mix, you lose the thread. You're no longer the one shaping the narrative, and getting that back is harder than keeping it.

How it works for your team

1

Onboard your first client

Collect their writing samples, bio, and brand guidelines. Load everything into Agent C and build their voice model. 30 minutes, start to finish: your team runs the whole process self-serve.

2

Generate from shared context

Your team works from the same voice model, brand rules, and content history for each client, so it doesn't matter who touches the draft. Run content from client inputs like voice memos, rough ideas, or emails. Most drafts need only minor edits before publishing.

3

Scale across clients

Each client gets their own isolated voice model and brand context — nothing crosses over. Add new clients without adding headcount. Your workflow gets faster with every one.

Your team delivers it in-house. The voice models do the heavy lifting.

Each client gets their own voice model, built on the client's messaging and the individual person's communication style. Multi-channel content generates in minutes. Agent C becomes the system of record for every executive voice you manage, with strategy, content history, and brand rules all live in one place. See our approach →

Your standards, enforced

Set hard rules at both the company and individual level, like words to avoid, formatting preferences, and tone guardrails. Your team reviews everything before it goes out. Third-party LLMs never train on your data, and each client’s AI is fully isolated. You hold the bar as high as you need it.

Built for your whole team

Your whole team works from the same voice model and brand context, so nothing drifts, no matter who touches the work. New hires onboard from the same voice models, brand rules, and content history — not from scratch, and not from someone else's notes. Clients can email ideas directly and they land in the content library automatically.

Unit economics that work

At $1,500/mo per brand with 3 voices and unlimited content, the platform cost is a fraction of what you charge. Your team's time drops dramatically, and thought leadership goes from break-even favor to one of your highest-margin services. Every brand you add deepens the edge.

You become the complete solution

When you own the executive's personal brand alongside campaigns and strategy, no one else enters the mix. Every voice model, content library, and brand rule lives in your Agent C account — it's institutional knowledge your team built, and it compounds over time. Your clients get visible. You keep the full relationship. And every engagement gets stickier.

Different clients. Different voices. Same platform.

See what generic AI produces vs. what a trained voice model does with the same input.

The Input
"Voice note from a fintech CEO on why marketplace expansion isn't as simple as it looks"

Generic AI Draft

"In the evolving landscape of fintech distribution, marketplace dynamics present unique challenges for lending products. Success in one vertical doesn't guarantee performance in another. Here are 5 key considerations for fintech leaders navigating multi-marketplace expansion..."

Polished. Professional. Could be anyone.

Agent C Draft — Same Person

"If a lending product works in one affiliate marketplace, it should work in all of 'em. I used to believe that. I was wrong."

Distinct POV. Specific experience. The kind of opening that makes people stop scrolling.

Real output from real voice models. No prompt engineering required.

What agency leaders are saying

"I manage voice models for founders in cybersecurity, executives at large tech companies, and partners at consulting firms, and each one sounds like a completely different person. Agent C helps me deliver thoughtful, on-voice work across all of them without sacrificing quality, clarity, or pace. It's become a trusted part of how I work."
Jen Cheng
CEO, Arc & Amplify (Content Agency)
"We onboarded three new clients in a month and didn't have to hire anyone. The voice models handle the heavy lift on first drafts, so my team focuses on strategy and client relationships instead of staring at blank docs. It completely changed our unit economics on thought leadership."
Cat Valverde
CEO, Writerly (AI B2B Marketing Agency)

Early results

90%
Reduction in time from client input to first draft
30 min
From new client intake to first writing sample
<10 min
Average editing time per first draft

Agency Pricing

Everything your team needs to deliver is included.

Per Client Brand
$1,500
/mo · billed quarterly
+ platform success manager
Author Voices
3
included per brand
+$500/mo per additional voice
Collaborators
10
included per brand
+$100/mo each additional
Content
∞
unlimited creation
Build Your AI Content Practice
Apply for Partner Match
Accepted partners receive a branded Agent C account for their own agency plus two client demo accounts, so you can show prospects exactly what the experience looks like before they commit.
Apply to the partner network →
Your agency account
A full Agent C account branded to your agency: use it for your own content, internal demos, and team training.
Two client demo accounts
Walk prospects through a live demo with real output. Nothing sells like showing someone their own voice coming back at them.
Selective by design
Partner Match has a 30% acceptance rate. We vet for quality, commitment, and client results, so the network stays strong.

Questions agencies ask

Can we white-label this for our clients?
Yes. You can use Agent C as an internal production tool (your clients never see the platform) or give clients direct access under your brand. Either way, you control the relationship. Talk to us about white-label options →
Is each client's data isolated?
Completely. Each client brand has its own brand context, content library, and individual voice models for each author. One client's data never influences another. We use trusted third-party LLMs that do not train on your data and only retain it temporarily. We may store content to improve each client's experience, but we never use it to train shared models. This is critical for agencies managing competing brands or sensitive industries.
How fast can we onboard a new client?
Collect your client's onboarding assets however you prefer — bio, writing samples, brand guidelines. Load them into Agent C, build their voice model, and generate a first writing sample. The whole process takes about 30 minutes. You run it end to end — no dependency on us. Most agencies have their workflow dialed in by client #3.
Do we get volume pricing?
Yes. Agencies managing 10+ client brands qualify for volume discounts. We also offer co-marketing opportunities, early access to new features, and priority support. Book a demo to discuss your specific setup →
What does the platform success manager do?
Your platform success manager handles onboarding for each new client brand, helps tune and optimize voice models, and makes sure your team gets the most out of the platform. Think of them as your Agent C expert — so your team can stay focused on client strategy. Meet yours →
How do agencies typically bill for this?
It depends on the agency. Some pass the platform cost through to clients as part of a managed service, bundled into a monthly retainer. Others absorb it internally and mark up the deliverables. Either way works — the unit economics are designed so you have room to structure it however fits your model. Talk to us about your setup →

Supporting an executive’s content in-house? See how marketing and comms teams use Agent C →

Turn executive thought leadership into your highest-value service line.

Your clients already need this. Now you have a way to deliver it — and keep the relationship, the margin, and the strategic position that comes with being the agency that makes their executives visible.

Book Demo

Not ready to commit? The demo is free: we'll walk through the agency workflow live.