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GPT OSS 120B vs Grok-3 Mini
Comprehensive side-by-side LLM comparison
Grok-3 Mini leads with 3.9% higher average benchmark score. GPT OSS 120B offers 126.1K more tokens in context window than Grok-3 Mini. Both models have similar pricing. Grok-3 Mini supports multimodal inputs. GPT OSS 120B is available on 5 providers. Both models have their strengths depending on your specific coding needs.
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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.
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xAI
Grok 3 Mini was developed as an efficient version of Grok 3, designed to bring next-generation capabilities to resource-conscious deployments. Built to provide strong performance with practical efficiency, it extends Grok 3's innovations to broader application scenarios.
5 months newer
Grok-3 Mini
xAI
2025-02-17
GPT OSS 120B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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GPT OSS 120B
Input:$0.09
Output:$0.45($0.26 cheaper)
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Grok-3 Mini
Input:$0.30
Output:$0.50
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT OSS 120B
Average Score:80.1%
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Grok-3 Mini
Average Score:84.0%(+3.9%)
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Knowledge Cutoff
Training data recency comparison
Grok-3 Mini
2024-11-17
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT OSS 120B
5 providers
DeepInfra
Groq
Throughput: 500 tok/s
Latency: 0.5ms
Novita
OpenAI
Throughput: 115 tok/s
Latency: 5.2ms
ZeroEval
Throughput: 500 tok/s
Latency: 0.5ms
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GPT OSS 120B
Avg Score:80.1%
Providers:5
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Grok-3 Mini
Avg Score:84.0%(+3.9%)
Providers:1