Computer Science & AI Kit 3-5

Computer Science & AI Kit 3-5 (45521-1) is a set in the Educational and Dacta theme, released in 2026. It has 309 pieces and 4 minifigures.

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Number:45521-1
Released:April 2026
Pieces:309
Box size:42.6 × 10.5 × 30.8 cm
Theme:Educational and Dacta

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 455.22 USD, taken from 7 days with a price on record.

LEGO expects to retire this set in December 2030.

Product details

Number: 45521-1
Name: Computer Science & AI Kit 3-5
Theme: Educational and Dacta
Released: April 2026
Launched: April 2026
Retires: December 2030 (expected)
Pieces: 309
Minifigures: 4
Best price (30 days): 455.22 USD
Price per piece (best offer): 1.480 USD
Barcodes from shop data, not confirmed: EAN-13 5702018066232

BrickLink market data

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Pricing

Best price ever≈ 455.22 USD (409.00 EUR) Advertising Sealed · gross · Conrad (DE) · seen 10/29/2026

Current best offer≈ 457.22 USD (409.00 EUR) Advertising Sealed · gross · Conrad (DE) · seen 11/3/2026

Price history

Lowest shop price now457.22 USD
Lowest ever 455.22 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	456.93 USD
October 2026	455.22 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

Nobody has sold this set recently.

Sources Conrad (DE): 6

Latest price from each shop

Sorted: lowest price first Show highest first

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Conrad (DE) Sealed · gross · seen 11/3/2026

≈ 457.22 USD (409.00 EUR)

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Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

85 inventory lines

Catalogue image of the part Plate Special 2 x 2 with Rubber Foot

Plate Special 2 x 2 with Rubber Foot 109373· Black

×4

Catalogue image of the part Technic Brick 2 x 4 with 4 Pin Holes, 2 Pins

Technic Brick 2 x 4 with 4 Pin Holes, 2 Pins 112174· White

×4

Catalogue image of the part Wheel with 4 Spokes with 2 Holes, 4 Inserts and Black Integral Tire

Wheel with 4 Spokes with 2 Holes, 4 Inserts and Black Integral Tire 112175pat0001· Black

×2

USB Cable 114253· White

×1

Catalogue image of the part Motor 10 x 6 x 3, Science

Motor 10 x 6 x 3, Science 118091· White

×1

Catalogue image of the part Sensor, Colour, Science

Sensor, Colour, Science 118092· White

×1

Catalogue image of the part Activity Card ? for Science Kits

Activity Card ? for Science Kits 119190· [No Color/Any Color]

×1

Catalogue image of the part Tile Round 2 x 2 with Black Circle, White Circles / Eye print

Tile Round 2 x 2 with Black Circle, White Circles / Eye print 14769pr9967· White

×12

Catalogue image of the part Plate Special 1 x 2 with Three Teeth [Tri-Tooth]

Plate Special 1 x 2 with Three Teeth [Tri-Tooth] 15208· White

×4

Catalogue image of the part Tile Special Round 2 x 2 with Hole

Tile Special Round 2 x 2 with Hole 15535· Dark Turquoise

×4

Catalogue image of the part Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening]

Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] 18575· Tan

×2

Catalogue image of the part Plate 2 x 12

Plate 2 x 12 2445· White

×4

Brick 2 x 6 2456· Dark Purple

×4

Catalogue image of the part Plate Round 2 x 2 with Rounded Bottom [Boat Stud]

Plate Round 2 x 2 with Rounded Bottom [Boat Stud] 2654· Light Bluish Gray

×6

Brick 2 x 4 3001· Blue

×2

Brick 2 x 4 3001· Green

×2

4 minifigures

Minifigures in this set

Monochrome Blue

/ fig-015666 /

No retail priceNo recent sales

Monochrome Bright Green

/ fig-015657 /

No retail priceNo recent sales

No image

Monochrome Bright Light Orange, 28621 Head

/ fig-016692 /

No retail priceNo recent sales

Monochrome Red, 28621 Head

/ fig-015664 /

No retail priceNo recent sales

Same theme, piece count within 15 %

Similar sets

Computer Science & AI Kit 3-5

In numbers

Product details

BrickLink market data

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Building instructions

Parts in this set

Minifigures in this set

Monochrome Blue

Monochrome Bright Green

Monochrome Bright Light Orange, 28621 Head

Monochrome Red, 28621 Head

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