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Muse Spark 1.3

MetaProprietary

Description

Muse Spark 1.3 is Meta Superintelligence Labs' proprietary multimodal reasoning model for long-running agentic, multi-agent, and coding workflows. It improves on Muse Spark 1.2 in long-horizon collaboration, multitasking, instruction following, tool use, failure recovery, and concise coding execution. It supports a 1,048,576-token context window and is available through Muse Code and the Meta Model API. ZeroEval routes to the lower-cost contributor endpoint, where prompts and outputs may be used to improve Meta's products.

Release Date
2026-09-02
Parameters
Context Length
1.0M
Modalities
audio, image, pdf, text, video

Capability Radar

100
general
70
coding
100
reasoning
85
scienceest.
70
agents
70
multimodal

Science is estimated from LLM Stats science scores or reasoning when no dedicated science benchmarks are available.

Rankings

Domain#RankScoreSource
Agentic Capability1
72.0
LS
Math Reasoning6
96.0
LB
Multimodal Ranking40
58.0
LS
Reasoning10
90.0
LB

Benchmark Scores (LLM Stats)

(LLM Stats (zeroeval))

Agents

Job Bench64.9%SR
Agentic IF Index (Internal)57.8%SR
AutomationBench49.4%SR

Code

DeepSWE 1.175.4%SR
SWE Atlas - Codebase QnA59.4%SR

General

GDPval-AA1754.00 / 3000SR

Long Context

MRCR v2 (8-needle)98.5%SR
MRCR v2 (8-needle, 512K-1M)98.1%SR

Multimodal

OSWorld 2.066.9%SR

Reasoning

Terminal-Bench 2.188.8%SR

Search

DeepSearchQA89.4%SR

AA Evaluation Indices

(Artificial Analysis)

No AA evaluation data available

LLM Stats Category Scores

(LLM Stats (zeroeval))
Legal
100
Finance
100
Reasoning
100
Agents
100
General
100
Long Context
100
Search
90
Multimodal
70
Code
70
Tool Calling
70
Vision
70
Productivity
60

Pricing

Input Price$0 / 1M tokens
Output Price$0 / 1M tokens
Blended Price (3:1)$0 / 1M tokens
Cache Read Price$0.15 / 1M tokens

Speed

No speed data available

Provider Price Ranking

Provider Price Ranking

6 providers

Cheapest: MetaMost Expensive: Vercel AI Gateway
ProviderInputOutput
1MetaPRIMARY
$0
$0
2Meta Model API
$0
$0
3NanoGPT
$1.25
$4.25
4OpenRouter
$1.25
$4.25
5Kilo Gateway
$1.25
$4.25
6Vercel AI Gateway
$1.25
$4.25

Compare pricing across different API providers for this model.

External Sources