Muse Spark 1.3 — Model Drop — Dropday.ai

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Muse Spark 1.3

MetaDropped Sep 2, 20269 builds9 makers1 prompt

Long-horizon agentic coding with 20% fewer tool calls and cleaner outputs.

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The most interesting things people are building with AI, all in one place — followed and tracked as they evolve from first demo to real product.

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SNAKE COLOSSEUM

MiniCPM5-2B

STAR JUMPS

About this release

What is Muse Spark 1.3?

Muse Spark 1.3 is Meta's updated multimodal reasoning model in the Muse Spark family, optimized for sustained multi-workflow agentic tasks and long-horizon coding. It tracks context across threads, proactively manages plans from messy inputs, and reduces unnecessary turns and tokens compared to 1.2. Available immediately via Muse Code and Meta Model API with existing endpoints and pricing.

Read the official Meta launch page

Worth opening first

Standouts

SNAKE COLOSSEUM

SNAKE COLOSSEUM

A parallel AI arena where four open-weight models compete in Snake

MiniCPM5-2B

A SOTA 2B-class open-source model optimized for edge AI and local inference.

STAR JUMPS

An isometric 3D platformer converted from Three.js to Godot via AI one-shots

Same brief, other models

All challenges →

Challenge

Minecraft

Same brief across models — older takes on the left, newer on the right.

45 / 54Compare all →

Playable4 Prompts1 More builds4

Playable

4

MiniCPM5-2B

A SOTA 2B-class open-source model optimized for edge AI and local inference.

Apps

Muse Code

Meta’s AI terminal coding agent for complex engineering workstreams.

agent

Project Overlapse

An open-science initiative tackling the Navier-Stokes existence and smoothness problem

agent

Aalo × Crusoe | Spark Campus Studio

Aalo × Crusoe | Spark Campus Studio

Explore and design energy-compute campuses in 3D.

Apps

Prompts

1

GLM-5.3-Flash DGX Spark Recipe

Open sourcePrompt

GLM-5.3-Flash DGX Spark Recipe

Verified deployment recipes for running GLM-5.3 Flash on NVIDIA GB10 hardware

Apps

More builds

4

SNAKE COLOSSEUM

SNAKE COLOSSEUM

A parallel AI arena where four open-weight models compete in Snake

Toys

STAR JUMPS

An isometric 3D platformer converted from Three.js to Godot via AI one-shots

Games

Minecraft JS

A browser-based Minecraft clone built for $0.10 with Meta's Muse Spark 1.3 Max.

Games

herdr-muse

Native-feeling Herdr support for Muse Code via lifecycle hooks.

Apps

Built something with Muse Spark 1.3?

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