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OpenAIGPT-5.5 ProVSZ.ai (Zhipu AI)GLM-4.7

Analysis by:the whichllmmodel Editorial Team|Updated: June 2026

Our Take

Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing GPT-5.5 Pro and GLM-4.7 directly in their respective provider playgrounds to see which fits your specific prompt styles best.
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Model Specs

GPT-5.5 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
N/A

complex codebases, multi-file repositories, and architectural planning

Reasoning (gpqa-diamond)Winner (+10.5%)
96.2%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00
Context WindowLarger
1.05M tokens
Model Specs

GLM-4.7

Open SourceAPI Available

Benchmarks & Scores

Coding (swe-bench-verified)
73.8%

multi-file code and clearly defined tasks

Reasoning (gpqa-diamond)
85.7%

graduate-level science QA

Cost & Context

Cost (per 1M tokens)67.5x cheaper
$1.00Input: $0.60 | Output: $2.20
Context Window
202.75k tokens

Frequently Asked Questions about GPT-5.5 Pro vs GLM-4.7

GLM-4.7 is cheaper than GPT-5.5 Pro. GLM-4.7 has a blended cost of $1.00/1M tokens, which is about 67.5x cheaper than GPT-5.5 Pro at $67.50/1M tokens.

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