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Muse Spark 1.2

Reasoning modelCoding model

Muse Spark 1.2 by Meta Superintelligence Labs

Release date: 2026-08-05Updated: 2026-08-24 11:44:12.1950
Live demoGitHubHugging FaceCompare
Parameters
Not disclosed
Context length
1M
Chinese support
Not supported
Reasoning ability

Muse Spark 1.2 by Meta Superintelligence Labs is an AI model published by Facebook AI Research Lab, released on 2026-08-05, for Reasoning model, and 1M context length, with a 1631.00 score on GDPval-AA v2.

Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology

Muse Spark 1.2

Model basics

Reasoning traces
Supported
Thinking modes
Thinking Level · Extra-High
Context length
1M tokens
Max output length
No data
Model type
Reasoning model
Modality (in / out)
Text, Image, Audio, Video → Text
Release date
2026-08-05
Model file size
No data
MoE architecture
No
Total params / Active params
No data / N/A
Knowledge cutoff
No data
Muse Spark 1.2

Open source & experience

Code license
Proprietary
Weights license
Proprietary
GitHub repo
GitHub link unavailable
Hugging Face
Hugging Face link unavailable
Muse Spark 1.2

Official resources

Paper
DataLearnerAI blog
No blog post yet
Muse Spark 1.2

API details

API speed
4/5
💡Default unit: $/1M tokens. If vendors use other units, follow their published pricing.
Standard
TypeConditionInputOutput
Text-$1.25/ 1M$4.25/ 1M
Cache PricingPrompt Cache
TypeTTLWriteRead
Text--$0.150/ 1M
Muse Spark 1.2

Benchmark Results

Muse Spark 1.2 currently shows benchmark results led by MCP-Atlas (1 / 39, score 90.30), Terminal-Bench 2.1 (16 / 45, score 82.90), DeepSWE (12 / 28, score 59.30). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.

Thinking

AI Agent - Tool Usage

2 evaluations
Benchmark / mode
Score
Rank/total
MCP-Atlas
Thinking ModeTools
90.30
1 / 39
Terminal-Bench 2.1
Extra-HighTools
82.90
16 / 45

Coding and Software Engineer

1 evaluations
Benchmark / mode
Score
Rank/total
DeepSWE
Extra-HighTools
59.30
12 / 28

Productivity Knowledge

1 evaluations
Benchmark / mode
Score
Rank/total
GDPval-AA v2
Thinking ModeTools
1631
7 / 14

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Muse Spark 1.2

Publisher

Facebook AI Research Lab
Facebook AI Research Lab
View publisher details
Muse Spark 1.2 by Meta Superintelligence Labs

Model Overview

Muse Spark 1.2 by Meta Superintelligence Labs is an AI model published by Facebook AI Research Lab, released on 2026-08-05, for Reasoning model, and 1M context length, with a 1631.00 score on GDPval-AA v2.

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