GLM-5-3 (Flagship) vs GPT-6.1 Sol

A direct, empirical evaluation of GLM-5-3 (Flagship) (Zhipu AI & THUDM) against GPT-6.1 Sol (OpenAI).

GLM-5-3 (Flagship)

Developed by Zhipu AI & THUDM · 744B parameters

Complex algorithmic reasoning, multi-step code synthesis, and long-horizon tool execution.

GPT-6.1 Sol

Developed by OpenAI · Proprietary Frontier Workhorse Engine parameters

Near-Astra reasoning at 1/5th price ($1.25/$5.00), SWE-bench Verified 74.8%, OSWorld 2.0 desktop agent automation, and sub-80ms Ultrafast Mode.

Metric GLM-5-3 (Flagship) GPT-6.1 Sol
SWE-bench Verified 54.8% 74.8%
MMLU-Pro 78.4% 92.4%
MATH-500 93.6% 96.2%
Context Window 256,000 tokens 1,000,000 tokens
Input Pricing (per 1M) $0.55 $1.25
Output Pricing (per 1M) $2.19 $5.00