Muse Spark 1.1

MetaReleased 9 Jul 2026ClosedFlagship

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164152–175Index score#35 · provisional, limited data

0/ 8Core tests taken0 of 6 areas · plus 6 anchor tests

−21Versus the frontier at releasebest then: Claude Fable 5Replaced by Muse Spark 1.2

$1.25/ $4.25Price per million tokensinput / output, list price

1.05MContext windowtokens it reads at once

Where it sitson the frontier

Claude Opus 4.6 reached this score 5 months earlier.

Test resultsby area · tick = best by any model

Reasoning & knowledgeevidence

GPQA Diamond

no result

Humanity's Last Exam

no result

Mathsevidence

FrontierMath T1-3

no result

Codingevidence

SWE-bench Verified

no result

Terminal-Bench

no result

Agentsevidence

APEX-Agents

no result

Novel problemsno evidence yet

ARC-AGI-2

no result

Long tasksno evidence yet

METR time horizon

no result

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

What others sayrank on each leaderboard

The Model Indexindependent tests, our method#35of 219 · 164

LMArena · Textoverall chat quality, judged by people#12of 388 · 1492 LMArena · Codingcoding questions in chat#13of 383 · 1534 LMArena · Mathsmaths questions in chat#22of 373 · 1491 LMArena · Creative writingcreative writing#38of 386 · 1448 Epoch Capabilities Indexoverall capability from many benchmarks#34of 239 · 154.3 LMArena · Visionunderstanding images#24of 149 · 1280 LMArena · WebDevbuilding web apps and front ends#36of 123 · 1542 LMArena · Documentsworking with long documents#17of 41 · 1465 LiveBench · Overalloverall, with fresh questions to limit contamination#31of 58 · 75.3

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.