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DeepSeek-V3 vs GPT OSS 120B
Comprehensive side-by-side LLM comparison
GPT OSS 120B leads with 11.3% higher average benchmark score. GPT OSS 120B is $0.83 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 was introduced as a major architectural advancement, developed with 671B mixture-of-experts parameters and trained on 14.8 trillion tokens. Built to be three times faster than V2 while maintaining open-source availability, it demonstrates competitive performance against frontier closed-source models and represents a significant leap in efficient large-scale model design.
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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.
7 months newer
DeepSeek-V3
DeepSeek
2024-12-25
GPT OSS 120B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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DeepSeek-V3
Input:$0.27
Output:$1.10
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GPT OSS 120B
Input:$0.09
Output:$0.45($0.83 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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DeepSeek-V3
Average Score:73.8%
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GPT OSS 120B
Average Score:85.0%(+11.3%)
Provider Availability & Performance
Available providers and their performance metrics
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DeepSeek-V3
1 providers
DeepSeek
Throughput: 100 tok/s
Latency: 0.5ms
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GPT OSS 120B
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DeepSeek-V3
Avg Score:73.8%
Providers:1
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GPT OSS 120B
Avg Score:85.0%(+11.3%)
Providers:5