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GPT-5.5 vs Nex-N2-Pro

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GPT-5.5Nex-N2-Pro

GPT-5.5OpenAI · 17 in the newsNex-N2-ProNex AGI

Scores

Intelligence (ECI)159—

Coding9142

Math97—

Reasoning & Knowledge9273

Agentic & Tools8734

Specifications

DeveloperOpenAINex AGI

FamilyGPT—

ReleasedApr 23, 2026Jun 8, 2026

Parameters——

AvailabilityAPI access—

Context window1.1M262K

Price — $/M input$5.00$0.25

Price — $/M output$30.00$1.00

Inputsfile, image, texttext, image

Outputstexttext

Benchmarks

AIME 2024/2025100%—

APEX38%—

ARC-AGI95%—

ARC-AGI-285%—

FrontierMath52%—

FrontierMath Tier 435%—

GPQA Diamond94%89%

GSO (code optimization)40%—

Humanity's Last Exam44%32%

SciCode56%42%

SimpleBench69%—

SimpleQA Verified63%—

SWE-bench Verified81%—

Terminal-Bench85%—

WebDev Arena1505—

WeirdML85%—

τ²-bench94%82%

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 Nex-N2-Pro

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