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DeepSeek-V3.1 vs GPT OSS 120B
Comprehensive side-by-side LLM comparison
GPT OSS 120B leads with 8.7% higher average benchmark score. DeepSeek-V3.1 offers 65.5K more tokens in context window than GPT OSS 120B. GPT OSS 120B is $0.73 cheaper per million tokens. GPT OSS 120B is available on 5 providers. Overall, GPT OSS 120B is the stronger choice for coding tasks.
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DeepSeek
DeepSeek-V3.1 was developed as an incremental advancement over DeepSeek-V3, designed to refine the mixture-of-experts architecture with improved training techniques. Built to enhance quality and efficiency while maintaining the open-source philosophy, it represents continued iteration on DeepSeek's flagship model line.
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OpenAI
GPT-OSS 120B was developed as an open-source model release from OpenAI, designed to provide the research and developer community with access to a capable language model. Built with 120 billion parameters, it enables experimentation, fine-tuning, and deployment in contexts where open-source licensing and transparency are valued.
6 months newer
DeepSeek-V3.1
DeepSeek
2025-01-10
GPT OSS 120B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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DeepSeek-V3.1
Input:$0.27
Output:$1.00
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GPT OSS 120B
Input:$0.09
Output:$0.45($0.73 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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DeepSeek-V3.1
Average Score:53.5%
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GPT OSS 120B
Average Score:62.2%(+8.7%)
Provider Availability & Performance
Available providers and their performance metrics
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DeepSeek-V3.1
2 providers
DeepInfra
Novita
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GPT OSS 120B
5 providers
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DeepSeek-V3.1
Avg Score:53.5%
Providers:2
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GPT OSS 120B
Avg Score:62.2%(+8.7%)
Providers:5