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Muse Spark

MetaProprietary

Description

Muse Spark is the first model in the Muse family developed by Meta Superintelligence Labs. It is a natively multimodal reasoning model with support for tool-use, visual chain of thought, and multi-agent orchestration. It features a Contemplating mode that orchestrates multiple agents reasoning in parallel. It demonstrates competitive performance in multimodal perception, reasoning, health, and agentic tasks, with Contemplating mode achieving 58% on Humanity's Last Exam and 38% on FrontierScience Research.

Release Date
2026-04-08
Parameters
Context Length
Modalities

Capability Radar

49
general
48
coding
88
reasoning
66
scienceest.
80
agents
70
multimodal

Science uses a reasoning proxy when dedicated science benchmarks are unavailable.

Rankings

Domain#RankScoreSource
Agents & Tools48
57.0
LS
Code Ranking18
82.0
AA
General Ranking14
88.0
AA
Multimodal Ranking68
60.0
LS
Reasoning87
50.0
LS
Science9
90.0
AA

Benchmark Scores (LLM Stats)

Agents

GDPval-AA1444.00 / 3000SR
DeepSearchQA74.8%SR
Terminal-Bench 2.059.0%SR
SWE-Bench Pro52.4%SR

Biology

GPQA89.5%SR

Code

LiveCodeBench Pro0.80 / 3000SR
SWE-Bench Verified77.4%SR

Communication

Tau2 Telecom91.5%SR

General

MMMU-Pro80.4%SR
SimpleVQA0.71 / 100SR

Grounding

ScreenSpot Pro84.1%SR

Healthcare

MedXpertQA78.4%SR
HealthBench Hard42.8%SR

Math

Humanity's Last Exam58.4%SR

Multimodal

CharXiv-R86.4%SR
ZEROBench0.33 / 100SR

Physics

IPhO 202582.6%SR

Reasoning

ERQA64.7%SR
ARC-AGI v242.5%SR
FrontierScience Research38.3%SR

AA Evaluation Indices

Intelligence Index
52.1
Coding Index
47.5
Tau2
0.9
Gpqa
0.9
Ifbench
0.8
Lcr
0.7
Scicode
0.5
Terminalbench Hard
0.5
Hle
0.4

LLM Stats Category Scores

Finance
100
Legal
100
Agents
100
General
100
Reasoning
97
Biology
90
Chemistry
90
Communication
90
Physics
90
Tool Calling
80
Frontend Development
80
Grounding
80
Vision
70
Code
70
Image To Text
70
Multimodal
70
Search
70
Spatial Reasoning
60
Healthcare
60
Math
60

Pricing

Input PriceFree
Output PriceFree
Blended Price (3:1)Free

Speed

Tokens/sec0.0 tokens/s
Time to First Token0.00s
Time to Answer0.00s

Available Providers

(LS internal units)

No provider data available

External Sources