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GPT OSS 120B vs Grok-4
Comprehensive side-by-side LLM comparison
Grok-4 leads with 14.2% higher average benchmark score. Grok-4 offers 1.9K more tokens in context window than GPT OSS 120B. GPT OSS 120B is $17.46 cheaper per million tokens. Grok-4 supports multimodal inputs. GPT OSS 120B is available on 5 providers. Overall, Grok-4 is the stronger choice for coding tasks.
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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 4 represents the fourth generation of xAI's language models, developed to continue advancing the frontier of AI reasoning and knowledge. Built to handle increasingly complex tasks with enhanced reliability, it demonstrates xAI's commitment to pushing AI capabilities forward.
27 days newer
Grok-4
xAI
2025-07-09
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($17.46 cheaper)
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Grok-4
Input:$3.00
Output:$15.00
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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GPT OSS 120B
Average Score:49.6%
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Grok-4
Average Score:63.7%(+14.2%)
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Knowledge Cutoff
Training data recency comparison
Grok-4
2024-12-31
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:49.6%
Providers:5
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Grok-4
Avg Score:63.7%(+14.2%)
Providers:2