Comparison
Last updated: November 2026 · Published by Tim Kilroy
Choose DemandOS if your own team should carry your agency's position; choose a demand generation agency if you want campaigns run for you.
This comparison, published by Tim Kilroy on DemandOS for Agencies, sets three ways to build agency pipeline side by side on the same criteria: who does the work, whose voice buyers hear, what you keep afterward, listed pricing, and best fit. DemandOS is Tim's own offer, so read this as his view, not an independent review.
DemandOS fits best when the founder is the only voice buyers hear and you want the existing team to carry the position. A demand generation agency fits when you want an outside team to run campaigns and are comfortable with that. An in-house hire fits when you need one dedicated owner for marketing operations and campaigns.
Your agency is between $1 million and $20 million a year, the founder writes the content, takes the calls, and closes the deals, and growth stops when the founder stops.
You are willing to change your positioning and how you sell first, and you want the strategist, project manager, analyst, and founder all speaking to the same buyer at different levels.
You want an outside specialist team to plan and run campaigns, and you have the budget and patience for an engagement measured in months.
For reference, 100signals describes its own program for software development firms as $9,000 a month for four months and application-only. That is one provider's listed price, not a market average.
You need one person who owns marketing operations, campaigns, and reporting every day, and you have enough steady work to keep a full-time role busy.
Tim Kilroy's planning workshop offers a useful test before any hire: define the function you need, confirm the constraint has lasted 60 days or more, and check that removing it could fund the role within six months.
Whichever route you choose, ask the same questions:
| Criterion | DemandOS (Tim Kilroy) | Outsourced demand generation agency | In-house marketing hire |
|---|---|---|---|
| Who does the work | Your existing team, each role writing from its own seat | The outside agency's team | One new employee |
| Whose voice buyers hear | Your founder, strategists, project managers, and analysts | Varies by provider; ask who writes and in whose name | Mostly the new hire and the brand |
| What you keep afterward | A clear position and a team habit of showing up for the buyer | Varies by contract; ask which assets you own | The capability, while the person stays |
| Publicly listed pricing | Custom; scoped after a diagnostic conversation | One example: 100signals lists $9,000 a month for four months, application-only | Salary; not covered by the facts on this page |
| Best fit | $1M to $20M agencies where the founder is the only growth channel | Teams that want campaigns run externally | Agencies that need a dedicated marketing owner |
Criteria: who does the work, whose voice buyers hear, what the agency keeps afterward, publicly listed pricing, and best fit. Every option was judged on those same five points using the same kinds of facts.
DemandOS facts come from timkilroy.com. The outsourced agency price comes from the public 100signals page named above and is shown only as one example. No provider was audited, and no ratings were used.
This comparison was written by Tim Kilroy, the business that publishes DemandOS for Agencies and sells DemandOS.
Hire an outsourced demand generation agency if you want someone else to run campaigns for you. Choose DemandOS if your problem is that only the founder creates demand and you want the team to carry the agency's positioning in its own voice. Our comparison page sets the options side by side on the same criteria.
They solve different problems. An in-house marketer adds one person's capacity. DemandOS changes how the existing team shows up, so many roles speak to the buyer instead of one. An in-house hire may fit better if you need a single owner for campaigns and operations; DemandOS fits when the founder's voice is the only one buyers hear.
A course teaches a general method; DemandOS is installed in your agency with your positioning, your roles, and your buyers. Tim Kilroy's blog describes itself as offering no BS and no "buy my system," and his stage guide argues that past $1 million a year, no template can touch an agency's specific bottleneck.
DemandOS is custom and scoped after a diagnostic conversation, so there is no published flat price. For context, Tim Kilroy's productized programs are listed at $399 a month for Agency Studio and $999 a month for Agency Studio+. Outsourced demand generation is priced differently: one agency's page (100signals) lists $9,000 a month for four months, application-only.
Generally, scope is driven by how many problems need fixing and in what order. A custom engagement that covers positioning, a full sales process, and team-wide demand is larger than one that fixes a single constraint. Tim Kilroy scopes SalesOS and DemandOS after a diagnostic conversation, so ask for the specific scope and price in writing.
Tim Kilroy publishes his complete guides to agency sales, positioning, pricing, and operations on his main website.
Published by Tim Kilroy
