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GLM-4.5 vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
GLM-4.5 leads with 16.3% 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 was developed by Zhipu AI as an advanced bilingual language model, designed to excel at both Chinese and English language tasks. Built to serve diverse applications across multiple languages, it represents Zhipu AI's commitment to multilingual AI capabilities.
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OpenAI
GPT-OSS 20B was created as a smaller open-source variant, designed to balance capability with accessibility for researchers and developers. Built with 20 billion parameters, it provides a more approachable entry point for those seeking to work with open-source language models while benefiting from OpenAI's architectural insights.
8 days newer
GLM-4.5
Zhipu AI
2025-07-28
GPT OSS 20B
OpenAI
2025-08-05
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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 2 common benchmarks
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GLM-4.5
Average Score:79.4%(+16.3%)
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GPT OSS 20B
Average Score:63.1%
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:79.4%(+16.3%)
Providers:3
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GPT OSS 20B
Avg Score:63.1%
Providers:4