Your agency retainer per article, per post, per year.
Plug in your numbers. The math runs live. The comparison against a fractional AI Content Department is at the bottom of the page.
The numbers above run for hundreds of EOI clients.
If they look right and the gap is meaningful, apply for a 14-day content sprint. If you want to talk through the assumptions first, talk to Roy.
// How the math runs
Cost per article: the full monthly retainer divided by the number of articles shipped that month. This is the honest number, not the writing-line-item number. Account management, strategy, project management, QBR prep are all overhead that your retainer absorbs. The article is what you paid for.
Cost per social post: retainer divided by posts per month (weekly count × 4.33). Agencies typically allocate 10 to 20 percent of the retainer to social, which is why the per-post number looks reasonable in isolation. When you divide the full retainer by the full output, the picture changes.
In-house review cost: the hidden line. Senior marketing time spent briefing, reviewing, and chasing the agency. Two hours a week at a $150 blended rate is $15,600 a year. Most teams underestimate this by half because the time is spread across Slack threads and the Monday call.
Fractional comparison: $7,500 monthly retainer, 20 long-form articles per month, 25 social posts per week, 8 landing pages per quarter. Same brand voice profile on every output. Live in 14 days. The volume is the variable, the retainer is the constant. These numbers match the cadence we ship for clients today, not aspirational targets.
Volume multiple: the ratio of fractional output to your current agency output, by surface. Articles, social, and landing pages each have their own multiple. The blended multiple weights all three.