AI consultant pricing runs from $150 to $500 per hour for hourly engagements, or $1,500 to $25,000 per project for productized work. The number you should care about is the second one — but the gap between those two pricing models hides most of what matters about buying AI consulting. Here's how to read it.
Before you can compare quotes, you have to understand which pricing model a consultant is using. Same engagement can look 3x more expensive or cheaper depending on the model.
| Model | Typical range | When to choose |
|---|---|---|
| Hourly | $150 – $500/hr | Genuinely ambiguous discovery work. Bad incentive for clean execution. |
| Fixed-price project | $1,500 – $25,000 | Well-scoped deliverables (audit, implementation, training). Best for most engagements. |
| Monthly retainer | $1,000 – $5,000/mo | Ongoing optimization after initial implementation. Predictable cost, accumulating value. |
| Fractional / executive | $5,000 – $25,000/mo | Embedded leadership at exec level. See fractional CMO and fractional CRO pricing. |
The fixed-price rule: if a consultant can't quote you a fixed price for a discrete deliverable, they either don't know what they're going to do or they're hoping you'll spend more than necessary. Walk.
A diagnostic engagement — typically 1 week of work. Output is a written roadmap identifying highest-leverage AI opportunities. No implementation. Treetop's AI Audit sits at the low end of this range at $1,500 (fixed).
Actually building the workflows. Configuring Claude Projects, writing system prompts, building knowledge bases, training the team. Scales with company size and number of workflows. Full implementation cost breakdown here.
Cohort-based or one-shot training engagements. Half-day workshops, full-day intensives, or multi-session cohorts. Price varies with team size and depth. See Claude Training.
Post-implementation optimization. Refining prompts, building new workflows, staying available in Slack. Treetop's Retainer is $1,200/mo for ~8 hours of work.
Embedded AI strategy at the executive level — owning AI roadmap, governance, portfolio decisions. Typically for $20M+ companies. See AI Strategy Consultant.
1. Buying hourly when the scope is clear. Hourly billing aligns the consultant's incentives against you. They make more by going slower. Switch to fixed-price for anything well-defined.
2. Paying for guidance when you needed implementation. A $5,000 strategy deck doesn't help if nobody on your team can actually build the Claude Projects. Make sure the deliverable is functional, not advisory-only, unless that's specifically what you want.
3. Hiring big firms for SMB-scale work. Top-tier consulting partners ($600/hr+) deliver real value for enterprise transformations. For a 25-person business, you're paying their overhead and getting an associate's actual work. Use boutique operators instead.
4. Skipping the audit. Going straight to implementation without diagnosing what to build first usually produces tools that look impressive but address the wrong workflows. The $1,500 audit pays for itself by killing $20K of wasted implementation work.