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Fugu Ultra vs Muse Spark

Fugu Ultra (Sakana) and Muse Spark (Meta AI) compared on benchmarks, pricing, context window, and use-case rankings.

Fugu UltraSakanaMuse SparkMeta AI

Scores

Intelligence (ECI)—155

Coding—84

Math—69

Reasoning & Knowledge—86

Agentic & Tools—62

Specifications

DeveloperSakanaMeta AI

Family——

ReleasedJun 24, 2026Apr 8, 2026

Parameters——

Availability—API access

Context window1M—

Price — $/M input$5.00—

Price — $/M output$30.00—

Inputstext, image—

Outputstext—

Benchmarks

AIME 2024/2025—89%

FrontierMath—39%

FrontierMath Tier 4—15%

GPQA Diamond—90%

Humanity's Last Exam—41%

SciCode—52%

SimpleQA Verified—66%

WebDev Arena—1513

τ²-bench—92%

Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.

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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.