AI CMO vs Fractional CMO: Which Should You Hire?
Both options give a growing business access to senior marketing leadership without a full-time hire. They solve different problems — and the best teams use both.
| | AI CMO | Fractional CMO | |---|---|---| | Monthly cost | £1,500–£8,000 | £4,000–£20,000 | | Speed of response | Seconds | Days | | Availability | 24/7 | 4–10 hours/week | | Strategic depth | Very high (with full data access) | Very high (with experience) | | Execution support | Built-in (delegated to AI ops) | Usually separate team | | Best for | Daily decisions + scale | Board-level strategy + politics |
You spend £5K–£100K/month and need daily strategic input Your team needs unblocking on creative briefs, channel mix, or budget allocation You want machine-speed iteration with senior judgement embedded You don't have £100K+/year to spend on a senior hire
You need a board-facing leader for investor reporting You're navigating an M&A, rebrand, or major repositioning You need political capital inside a larger organisation You're hiring a permanent CMO and need a bridge
A fractional CMO sets the 12-month vision; an AI CMO executes the daily strategy and feeds back performance signals. This combination outperforms either solo by a wide margin.
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