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GPT-5.5 vs Muse Spark

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GPT-5.5Muse Spark

GPT-5.5OpenAI · 17 in the newsMuse SparkMeta AI

Scores

Intelligence (ECI)159155

Coding9184

Math9769

Reasoning & Knowledge9286

Agentic & Tools8762

Specifications

DeveloperOpenAIMeta AI

FamilyGPT—

ReleasedApr 23, 2026Apr 8, 2026

Parameters——

AvailabilityAPI accessAPI access

Context window1.1M—

Price — $/M input$5.00—

Price — $/M output$30.00—

Inputsfile, image, text—

Outputstext—

Benchmarks

AIME 2024/2025100%89%

APEX38%—

ARC-AGI95%—

ARC-AGI-285%—

FrontierMath52%39%

FrontierMath Tier 435%15%

GPQA Diamond94%90%

GSO (code optimization)40%—

Humanity's Last Exam44%41%

SciCode56%52%

SimpleBench69%—

SimpleQA Verified63%66%

SWE-bench Verified81%—

Terminal-Bench85%—

WebDev Arena15051513

WeirdML85%—

τ²-bench94%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.

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

GPT-5.5 vs Muse Spark

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