Training sizer
How many sessions, over how long, for what budget?
The number of sessions, the real elapsed time and the full cost of a training programme — annual refresh included.
- ≈ 3 min
- Free calculation · AI commentary on request
- You leave with: Session count, real duration and the full budget
Who to train, and to what level
The ones who will build for others — shared prompts, automations, templates.
Daily use in their own work. The remainder — 45% — is awareness only.
Delivery days genuinely available per month. This constraint, not the budget, is what sets the duration.
The programme
The figures above are computed and free. If you also want them read back to you — what they mean, what is specific to your sector, where to start — that is produced on request.
The breakdown
Delivery days count per session, not per person: one trainer takes the whole group. Participant time does count per head — and it is almost always the heaviest line.
| Line | Estimate |
|---|---|
| People | |
Builder 8 people across 1 session of at most 10 — 5.0 delivery days. | €7,000 €2,700 — €22,000 |
Practitioner 36 people across 4 sessions of at most 10 — 8.0 delivery days. | €11,200 €3,600 — €26,400 |
Awareness 36 people across 4 sessions of at most 10 — 2.0 delivery days. | €2,800 €900 — €8,800 |
Participants' own timeoften omitted 910 hours of internal time at €75/h. Almost always missing from a training budget, and almost always the heaviest line in it. | €68,250 €36,225 — €117,600 |
| Recurring | |
Annual refreshoften omitted 35% of the cohort each year — turnover and skill decay. Budget a one-off programme and nothing after, and the capability is gone within eighteen months. | €31,238 €8,685 — €104,880 |
Sensitivity
Each assumption is moved ±20% on its own, holding the others fixed. The longest bar is the one worth checking first — not necessarily the one that felt most uncertain.
The assumptions
Every figure above rests on these. The ones marked “assumption” have no external source: they are modelling choices, labelled so they can be argued with rather than mistaken for measurements.
- Group size 10Observed
- Hands-on AI training degrades sharply above a dozen participants — the exercises need individual attention.
- Level split 10 / 45 / 45 %Observed
- Builders / practitioners / awareness. The same split as licensing: a light user and a light training need are the same person.
- Refresh 35 %/anAssumption
- Skills decay and staff turn over. Budgeting a one-off training programme and nothing after is how a capability quietly disappears within eighteen months.
- Delivery capacity 4 days/monthAssumption
- The constraint that sets the calendar. Twenty sessions is not a two-month programme if one trainer delivers them all.
What the calculation does, what the AI does
Every figure on this page comes from a deterministic algorithm running in your browser: the same input always gives the same result, and nothing is sent to produce it. AI runs only afterwards, to write the commentary from those figures. It produces none of them — the format it fills has no numeric fields — and any sentence quoting a value the calculation did not produce is removed before display.
Where to go next
See all 19 tools →- Roadmap
In what order, and over how long?
≈ 3 min · Quarterly phases and what each one delivers - Freed capacity
The hours saved — how many people is that, and what does it become?
≈ 2 min · Hours saved as FTEs, and the three ways to read them - Carbon footprint
How much does our AI use emit, and where should it run?
≈ 2 min · kWh and kg CO₂e, by hosting region - Cost calculator
What does our AI transformation actually cost, and when does it break even?
≈ 3 min · A line-by-line budget, the return and the break-even month - Pitfall radar
What is going to go wrong in our programme, and what will it cost?
≈ 2 min · Detected pitfalls, their weighted cost and the fix for each - AI usage policy
Our teams already use AI: what rules do we give them, in writing, this week?
≈ 4 min · A complete AI usage policy, ready to sign