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GPT-OSS-120B vs Grok 4
Comprehensive side-by-side LLM comparison
Grok 4 leads with 9.2% higher average benchmark score. Grok 4 offers 146.4K more tokens in context window than GPT-OSS-120B. Grok 4 is $Infinity cheaper per million tokens. Grok 4 supports multimodal inputs. Overall, Grok 4 is the stronger choice for coding tasks.
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OpenAI
GPT-OSS-120B, released by OpenAI in August 2025, is an open-weight large language model with 120 billion parameters distributed under the Apache 2.0 license. It represents OpenAI's entry into the open-source model space, enabling developers to self-host and fine-tune a GPT-5-generation-class model. GPT-OSS-120B targets research applications, on-premises deployments, and custom fine-tuning workflows requiring a large open-weight base model.
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xAI
Grok 4, released by xAI on July 10, 2025, is a large language model featuring first-principles reasoning and comprehensive multimodal support. It features a 260K token context window and demonstrated strong performance on advanced reasoning and coding benchmarks. Grok 4 targets complex multi-step reasoning tasks, scientific analysis, and agentic workflows via the xAI API.
22 days newer
Grok 4
xAI
2025-07-10
GPT-OSS-120B
OpenAI
2025-08
Pricing Comparison
Cost per million tokens (USD)
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GPT-OSS-120B
Input:$Infinity
Output:$Infinity
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Grok 4
Input:$5.00
Output:$25.00($Infinity cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-OSS-120B
Average Score:78.3%
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Grok 4
Average Score:87.5%(+9.2%)
Performance comparison across key benchmark categories
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GPT-OSS-120B
Science78.3%
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Grok 4
Science87.5%(+9.2%)
Provider Availability & Performance
Available providers and their performance metrics
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GPT-OSS-120B
1 providers
Hugging Face
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Grok 4
1 providers
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GPT-OSS-120B
Avg Score:78.3%
Providers:1
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Grok 4
Avg Score:87.5%(+9.2%)
Providers:1