Model
Model explorer

Muse Spark 1.1 (xhigh)

CLOSED
Meta · Muse Spark family · released Jul 9, 2026

First flagship from Meta Superintelligence Labs (led by Alexandr Wang), replacing the open Llama line with a proprietary model; base Muse Spark launched 2026-04-08, this is the 1.1 update from 2026-07-09, evaluated here at the 'xhigh' reasoning-effort tier. Meta has said it hopes to open-source future versions but this release is closed/API-only.

ReasoningCodingVisionFunction callingTool useAgentic
2507.1
Elo · rank #42
Parameters
Undisclosed
Active params
—
Context
1M tokens
Architecture
Proprietary multimodal reasoning model (undisclosed architecture), Meta Superintelligence Labs' first model family, update to April 2026 Muse Spark
License
Proprietary
Languages
—
API price (in/out)
$1.25 / $4.25
Modalities
text · vision
Benchmark results
Bar shows position within the tracked field; marker = field best
CharXivVision88.4%#3
best: Qwen3.8-Flash-Next · 90.6%
CyberGymCoding59.0%#14
best: MiMo-V2.6-Flash · 95.1%
GDPval-AAAgents1376#30
best: Claude Fable 5 · 1932
GPQA DiamondReasoning90.0%#36
best: GPT-6 Astra · 96.0%
Humanity's Last ExamReasoning45.0%#18
best: Claude Opus 5.5 · 67.7%
LiveCodeBenchCoding85.9%#23
best: DeepSeek-V4-Pro (Think Max) · 93.5%
MMLU-ProKnowledge88.7%#5
best: Claude Fable 5 · 91.5%
MMMUVision86.6%#4
best: Claude Fable 5 · 89.3%
OSWorld-VerifiedAgents80.8%#8
best: Claude Fable 5 · 85.0%
SWE-bench ProCoding61.5%#17
best: Claude Opus 5.5 · 89.9%
SWE-bench VerifiedCoding82.0%#20
best: Claude Opus 5 · 97.0%
Terminal-Bench 2.0Coding78.0%#24
best: DeepSeek-V4.1-Flash · 90.6%
Run it locally
Closed weights — available via API only. No local deployment.
Input / M tok
$1.25
Output / M tok
$4.25
Muse Spark family
Elo progression across releases
Muse Spark 1.1 (xhigh)Jul 20262507.1Muse Spark 1.2Aug 20262777.7Muse Spark 1.3Sep 20263062.2
Resources
DOCShttps://ai.meta.com/APIAvailable via Meta API
API price $1.25/$4.25 · each benchmark row carries its own source badge (see methodology)