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GPT-5.5 vs Qwen3.5-9B

GPT-5.5 (OpenAI) and Qwen3.5-9B (Alibaba) compared on benchmarks, pricing, context window, and use-case rankings.

GPT-5.5OpenAI · 16 in the newsQwen3.5-9BAlibaba
Scores
Intelligence (ECI)159
Coding902
Math97
Reasoning & Knowledge91
Agentic & Tools952
Specifications
DeveloperOpenAIAlibaba
FamilyGPTQwen
ReleasedApr 23, 2026Feb 24, 2026
Parameters
AvailabilityAPI accessOpen weights (restricted use)
Context window1.1M262K
Price — $/M input$5.00$0.10
Price — $/M output$30.00$0.15
Inputsfile, image, texttext, image, video
Outputstexttext
Benchmarks
AIME 2024/2025100%
APEX38%
ARC-AGI95%
ARC-AGI-285%
FrontierMath52%
FrontierMath Tier 435%
GPQA Diamond94%
GSO (code optimization)40%
SimpleBench69%
SimpleQA Verified63%
SWE-bench Verified81%
Terminal-Bench85%9%
WebDev Arena1505
WeirdML85%

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.

Frequently asked questions

Which is cheaper, GPT-5.5 or Qwen3.5-9B?

Qwen3.5-9B is cheaper on input tokens at $0.10 per million, versus $5.00 (representative OpenRouter pricing).

Which has a larger context window, GPT-5.5 or Qwen3.5-9B?

GPT-5.5 supports up to 1.1M tokens, compared with 262K for the other.

Which is better for coding, GPT-5.5 or Qwen3.5-9B?

Across coding benchmarks like SWE-bench Verified and Terminal-Bench, GPT-5.5 ranks higher — 90th vs 2th percentile among the models tracked on Model Beat.

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