Forecasting with AI: How Three Companies Cut Their Planning Error in One Quarter

đź“… May 2026
⏱️ 8 min read
✍️ Kovix Team


Planning demand with a spreadsheet in 2026 is like navigating with a paper map:
it works until the weather changes. And in supply chain, the weather is always changing.
The real cost of bad forecasting has two faces: stock that piles up and ties up capital, and stock
that runs out and loses sales. Both can be measured — and both can be reduced significantly.

The MAPE nobody looks at until it hurts

Forecast error has a technical name: MAPE (Mean Absolute Percentage Error).
It’s the average percentage by which your plan diverges from real demand. For the operations team,
it has another name: the weekly pain of explaining why product ran out, or why
there’s $200,000 of dead inventory that nobody ordered.

The industry benchmark is clear: a MAPE above 25% indicates a planning problem with
a direct cost
. Yet many companies live with MAPEs of 40% or more without knowing it,
because they never measured it systematically.

Classic statistical planning solves the baseline pattern. AI solves the anomalies,
the complex seasonality, and the external events no linear model can anticipate.
The combination of both is what delivers sustainable results.

Case 1 — Industrial company: MAPE from 42% to 28% in 90 days

An industrial company with 800 active SKUs was planning with a mix of Excel,
the purchasing manager’s intuition, and moving averages. Their MAPE hovered around 42%,
and excess inventory equaled 3 months of sales: capital trapped on shelves while
they kept running out of stock on their highest-rotation SKUs.

They implemented Kovix SCP with machine learning models trained on 3 years of sales
history, integrating external variables: seasonality, commercial calendar, and input prices.
The system coexists with the purchasing team — it doesn’t replace them. It suggests, explains
the reasoning, and allows manual override when there’s context the model doesn’t know.

✅ MAPE 42% → 28% in 90 days
✅ USD 380K of capital released from inventory
✅ Planning visibility from 4 to 12 weeks
✅ Purchasing team time on order building: -60%

The most important change wasn’t numerical. It was conversational: S&OP meetings
shifted from discussing what happened last week to deciding what to do in the next twelve.

Case 2 — Consumer goods: seasonality no spreadsheet captures

A consumer goods company with national distribution sold through three channels with
completely different dynamics: traditional retail, big-box, and e-commerce. Their forecast was
a single one for all channels, based on historical averages. The result: 23% stockouts
in the online channel
 on weekends, and chronic overstock in the traditional channel.

The problem wasn’t lack of data — they had it. It was lack of models that could differentiate
behavior by channel, by SKU, and by fine-grained seasonality (not just summer/winter,
but weekends, pay periods, commercial events, and promotions).

They implemented Kovix SCP with hierarchical forecasting: one model per channel Ă— family Ă—
region, automatically reconciled to avoid inconsistencies between levels. The system learns
every week from new sales and adjusts upcoming cycles without manual intervention.

✅ 23% → 6% stockouts in the online channel
✅ -32% overstock in the traditional channel
✅ +18% additional sales recovered on star SKUs
✅ 4 months to reach steady-state per channel

What changed wasn’t the team. It was the horizon: they went from reactive planning
to anticipating demand with enough lead time to negotiate better purchasing terms.

Case 3 — B2B distributor: the long tail eating the margin

A B2B distributor with 12,000 active SKUs faced the classic long-tail problem: 80% of volume
came from 20% of SKUs, but the other 80% of products — low rotation — absorbed 40% of
inventory capital
 and a disproportionate share of the purchasing team’s time.

Classic models didn’t work on the long tail: little historical demand, high variance,
erratic behavior. The team ended up buying “just in case” — and accumulating dead inventory
for years.

They implemented Kovix SCP with automatic ABC/XYZ segmentation and differentiated models:
machine learning for high-rotation SKUs, and inventory rules based on lead time and service
level for the long tail. Each SKU gets the strategy its behavior allows.

✅ -45% tied-up inventory in long tail (C/Z products)
✅ Service level maintained at 97% without overstock
✅ USD 520K of capital released in the first year
âś… Purchasing team went from managing 12,000 SKUs to supervising rules

The deepest change was a mindset shift: they stopped treating all SKUs the same,
and started applying the right tool for each type of behavior.

The pattern that repeats

All three cases share a finding: the problem wasn’t the team, it was the tool.
None of the purchasing teams were planning badly. They were planning with instruments that
couldn’t capture the real complexity of the business: fine-grained seasonality, channels with
different dynamics, long-tail behavior, external events.

The other pattern: AI didn’t replace the team, it elevated them.
In all three cases, people stopped doing low-value work (building orders in spreadsheets,
reconciling differences, fighting fires) to start doing high-value work (negotiating with
suppliers, planning capacity, managing exceptions).

Companies with optimized demand planning have, on average, 15% less capital tied up
in inventory and 20% fewer lost sales from stockouts than competitors running
manual processes.

How to measure your MAPE today (no project, no budget)

Before evaluating any tool, do this simple exercise:

1. Take the last 6 months of your top 50 SKUs.
For each SKU and each month, note: how much you planned to sell vs. how much you actually sold.
It’s information you already have in your ERP.

2. Calculate the MAPE for each SKU.
MAPE = average of (|planned – actual| / actual) Ă— 100.
Then average the MAPEs across all 50 SKUs.

3. If the result is above 25%, you have a problem with a direct cost.
The higher it is, the greater the improvement potential. A 40% MAPE means nearly half of your
planning is wrong — translating into dead stock and lost sales.

That number alone justifies the conversation. If you’re above 30%, you already have
a quantified hypothesis of what it’s costing you today.

How Kovix solves it

Kovix SCP combines classic statistical models with machine learning to produce
demand plans that adjust themselves as trends, seasonality, and external events shift.
It integrates with your ERP and WMS to close the full planning loop: from forecast to purchase
plan, from purchase plan to warehouse execution.

The approach is simple: we set up SCP on top of your existing sales history, train it
with your commercial calendar and real constraints, and accompany you from setup through
the first 90 days of steady-state. Without replacing the purchasing team. Freeing them from
the work the machine does better.

Next steps

If you recognize any of the three cases in your operation, the first step is easy:
measure your current MAPE. Do the exercise with your top 50 SKUs. Look at the number.
Then we can talk about what would change if that number were cut in half.

You don’t need a transformation project. You need a tool that learns from the real
behavior of your business and frees the purchasing team from repetitive work.

Ready to see it in action?

30 minutes. No commitment. We identify potential savings using your own historical data.

Schedule a Demo →

 

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