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GLM-4.5 vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
GLM-4.5 leads with 27.9% higher average benchmark score. GPT OSS 20B is $1.75 cheaper per million tokens. Overall, GLM-4.5 is the stronger choice for coding tasks.
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Zhipu AI
GLM-4.5 is a language model developed by Zhipu AI. It achieves strong performance with an average score of 64.0% across 14 benchmarks. It excels particularly in MATH-500 (98.2%), AIME 2024 (91.0%), MMLU-Pro (84.6%). It supports a 262K token context window for handling large documents. The model is available through 3 API providers. It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents Zhipu AI's latest advancement in AI technology.
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OpenAI
GPT OSS 20B is a language model developed by OpenAI. The model shows competitive results across 7 benchmarks. It excels particularly in MMLU (85.3%), CodeForces (83.9%), GPQA (71.5%). It supports a 262K token context window for handling large documents. The model is available through 4 API providers. It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents OpenAI's latest advancement in AI technology.
8 days newer
GLM-4.5
Zhipu AI
2025-07-28
GPT OSS 20B
OpenAI
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
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GLM-4.5
Input:$0.40
Output:$1.60
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GPT OSS 20B
Input:$0.05
Output:$0.20($1.75 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 19 common benchmarks
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GLM-4.5
Average Score:47.1%(+27.9%)
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GPT OSS 20B
Average Score:19.3%
Provider Availability & Performance
Available providers and their performance metrics
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GLM-4.5
3 providers
DeepInfra
Novita
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
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GPT OSS 20B
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GLM-4.5
Avg Score:47.1%(+27.9%)
Providers:3
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GPT OSS 20B
Avg Score:19.3%
Providers:4