Meta AIopen-weight
Released: 2026-08-05

Muse Spark 1.2 Contributor

Muse Spark 1.2 contributor tier is a reasoning model from Meta designed for developers who want to start building at an even lower cost. It’s meaningfully cheaper than Muse Spark...

Intelligence Index
77.0/ 100
Calibrated multi-domain composite
Throughput Speed
130tok/sec
Output streaming throughput
Time To First Token
280ms
Initial chunk server latency
LiveBench Contam-Free
67.8%
September 2026 suite score

LiveBench Multi-Domain Evaluation Breakdown

Monthly refreshed contamination-free test sets
Logical Reasoning70.8%
Coding & Repo Repair69.3%
Mathematics (AIME)68.5%
Data Analysis & Tables65.5%
Language & Comprehension67.0%
Instruction Following67.8%

Sourced Benchmark Evaluations (60)

Verified performance across authoritative benchmarks with provenance tracking.
BenchmarkStatusScoreTrustDateSource TypeProvenance
ARC-AGI-3Active48.6%
93
2026-09-09independentSource ↗
ARC-AGI-2Nearing Saturation58.3%
75
2026-09-02independentSource ↗
FrontierMathActive20%
98
2026-08-30independentSource ↗
PutnamBenchActive37.2%
90
2026-08-29independentSource ↗
Omni-MATHDeprecated53%
10
2026-08-27independentSource ↗
SWE-LancerDeprecated49.7%
20
2026-08-27independentSource ↗
FrontierCodeActive42.4%
98
2026-08-25independentSource ↗
SoohakActive54.4%
98
2026-08-25independentSource ↗
StructFlowBenchNearing Saturation57.6%
75
2026-08-23independentSource ↗
Humanity's Last ExamActive32.9%
93
2026-08-23independentSource ↗
AIMENearing Saturation68%
75
2026-08-23independentSource ↗
OlympiadBenchActive58.7%
80
2026-08-22independentSource ↗
Terminal-BenchActive51.2%
80
2026-08-21independentSource ↗
FireBenchActive57%
95
2026-08-21independentSource ↗
MathArenaActive57.3%
99
2026-08-21independentSource ↗
SimpleQAActive40%
90
2026-08-20independentSource ↗
OpenAI-MRCRActive64.7%
80
2026-08-20independentSource ↗
CodeContestsDeprecated47.5%
10
2026-08-20independentSource ↗
SWE-bench ProActive45.3%
90
2026-08-19independentSource ↗
ComplexBenchNearing Saturation55.6%
80
2026-08-19independentSource ↗
LongBench-ProActive63.1%
80
2026-08-19independentSource ↗
MultiPL-EDeprecated67.3%
10
2026-08-18independentSource ↗
ZeroSCROLLSNearing Saturation61.6%
78
2026-08-18independentSource ↗
InfiniteBenchNearing Saturation65.5%
65
2026-08-17independentSource ↗
LiveCodeBenchSaturated59.9%
39
2026-08-17independentSource ↗
AgentIFNearing Saturation46.1%
80
2026-08-17independentSource ↗
MATHSaturated70.2%
25
2026-08-17independentSource ↗
SCROLLSNearing Saturation61.6%
65
2026-08-16independentSource ↗
MercuryDeprecated64.3%
10
2026-08-16independentSource ↗
MMLU-ProNearing Saturation70.8%
75
2026-08-16independentSource ↗
TabMWPSaturated65.9%
25
2026-08-15independentSource ↗
CyberSecEvalDeprecated65.8%
10
2026-08-15independentSource ↗
RULERNearing Saturation70.8%
84
2026-08-15independentSource ↗
SWE-bench VerifiedSaturated57%
25
2026-08-14independentSource ↗
QuALITYNearing Saturation67.8%
78
2026-08-14independentSource ↗
MMLU-ReduxSaturated75.5%
25
2026-08-14independentSource ↗
SWE-benchDeprecated49.7%
10
2026-08-13independentSource ↗
MGSMNearing Saturation68%
65
2026-08-13independentSource ↗
LongBenchNearing Saturation66.2%
65
2026-08-13independentSource ↗
QASPERNearing Saturation63.9%
65
2026-08-12independentSource ↗
TruthfulQASaturated67.8%
25
2026-08-12independentSource ↗
AGIEvalSaturated64.2%
25
2026-08-12independentSource ↗
SuperGLUESaturated76.2%
25
2026-08-11independentSource ↗
GSM-HardDeprecated68.7%
10
2026-08-11independentSource ↗
MT-BenchNearing Saturation7%
75
2026-08-10independentSource ↗
BIG-Bench HardSaturated73.2%
25
2026-08-10independentSource ↗
CodeXGLUEDeprecated68.7%
23
2026-08-10independentSource ↗
WinoGrandeSaturated77.7%
28
2026-08-09independentSource ↗
MBPP+Nearing Saturation74.6%
65
2026-08-09independentSource ↗
IFEvalDeprecated66.4%
25
2026-08-09independentSource ↗
GPQANearing Saturation67.8%
78
2026-08-09independentSource ↗
HumanEval+Saturated78.9%
25
2026-08-08independentSource ↗
Needle-in-a-HaystackSaturated95.4%
44
2026-08-08independentSource ↗
CommonsenseQASaturated78.4%
28
2026-08-08independentSource ↗
GSM8KSaturated77.3%
25
2026-08-07independentSource ↗
GLUESaturated80.7%
28
2026-08-07independentSource ↗
MBPPSaturated77.5%
25
2026-08-07independentSource ↗
HumanEvalSaturated83.3%
25
2026-08-06independentSource ↗
MMLUSaturated78.5%
25
2026-08-06independentSource ↗
ARC-AGISaturated70.2%
25
2026-08-06independentSource ↗
Local Hardware Execution (Ollama)Hardware Compatible
# 1. Pull and execute model locally with Ollama
ollama run meta-muse-spark-1-2-contributor

# 2. Or invoke via local OpenAI-compatible endpoint
curl http://localhost:11434/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "model": "meta-muse-spark-1-2-contributor",
    "messages": [{"role": "user", "content": "Analyze reasoning chains on AIME 2026"}]
  }'

Evaluation & Sourcing Notes

Scores listed for Muse Spark 1.2 Contributor represent verified evaluations extracted from official research papers, independent evaluation suites (HELM, LMSYS, OpenCompass, LiveBench), and verified audit reports.

All benchmarks marked as saturated or deprecated reflect historical performance where the benchmark no longer provides active discriminative power.