



Overview
The fifth and final Mindstorms set, sharing its motors, sensors and hub with LEGO Education SPIKE Prime. LEGO ended the Mindstorms line in 2022, and the Robot Inventor app is discontinued on October 1, 2026, with LEGO pointing owners to the SPIKE Prime app (without guaranteeing a full 1:1 experience), so newer setups may need community tools.
- Type
- Modular robot · Consumer & education kits
- Maker
- The LEGO Group (Denmark)
- Released
- 2020
- Price
- Was $359.99
- Status
- Discontinued · used/leftover only
- Best for
- Ages 10+
- Programming
- Full SDK
Price and shipping
Set 51515 RRP (Brickset). On sale Oct 2020 – July 2023. The last Mindstorms set.
Shipping: Used, days. Discontinued. Used sets are common on eBay and BrickLink, often above the original price.
Specifications
| Category | Modular & reconfigurable · Consumer & education kits |
|---|---|
| Released | 2020 |
| Country | Denmark |
| Availability | Discontinued · used/leftover only |
| Programmability | Full SDK |
| Built-in autonomy | Reactive · Responds to its surroundings without a map, such as avoiding obstacles or following a person |
| LLM support | Possible via SDK · No built-in LLM. Its SDK lets software on a computer control it. |
| MuJoCo simulation | None found · Nothing found. |
| NVIDIA Isaac simulation | None found · Nothing found. |
| Gazebo simulation | None found · Nothing found. |
| Best for | Ages 10+ (maker rating) |
| Vision sensors | No vision sensors |
| Actuators | DC / gear motors |
| Audio | Speaker |
| Compute type | Arduino / ESP32 / microcontroller |
| Remote control | Via SSH / web / bridge |
| Size | 949-piece set, robot size varies |
| Locomotion | Any LEGO Technic build, 4 medium motors |
| Compute | SPIKE Prime-style hub (STM32F413 microcontroller) with 6-axis gyro/accelerometer |
| Camera | None (color/light sensor only) |
| Sensors | Distance sensor, color/light sensor, 6-axis IMU in hub |
| Runtime | Not published |
| Speed | Not published |
| SDK | MINDSTORMS Robot Inventor app with Scratch-based blocks and text-based Python, LEGO discontinues the app on October 1, 2026 |
Common questions
How much does LEGO Mindstorms Robot Inventor cost?
It sold for $359.99. Set 51515 RRP (Brickset). On sale Oct 2020 – July 2023. The last Mindstorms set.
Can LEGO Mindstorms Robot Inventor be bought today?
It is discontinued, though used or leftover units still turn up. Discontinued. Used sets are common on eBay and BrickLink, often above the original price.
Who makes LEGO Mindstorms Robot Inventor?
LEGO Mindstorms Robot Inventor is made by The LEGO Group (Denmark). It came out in 2020.
Can LEGO Mindstorms Robot Inventor be programmed?
Full SDK. MINDSTORMS Robot Inventor app with Scratch-based blocks and text-based Python, LEGO discontinues the app on October 1, 2026.
Does LEGO Mindstorms Robot Inventor have AI chat or LLM support?
Possible via SDK. No built-in LLM. Its SDK lets software on a computer control it.
What age is LEGO Mindstorms Robot Inventor for?
Ages 10+, per the maker.
Ratings & reviews
Ratings and reviews load on the live site.
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