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GPT-OSS-120B vs Grok 2
Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. Grok 2 offers 7.2K more tokens in context window than GPT-OSS-120B. Grok 2 is $Infinity cheaper per million tokens. Grok 2 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-OSS-120B, released by OpenAI in August 2025, is an open-weight large language model with 120 billion parameters distributed under the Apache 2.0 license. It represents OpenAI's entry into the open-source model space, enabling developers to self-host and fine-tune a GPT-5-generation-class model. GPT-OSS-120B targets research applications, on-premises deployments, and custom fine-tuning workflows requiring a large open-weight base model.
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xAI
Grok 2, released by xAI in August 2024, is a large language model with 131K token context window and native image understanding, developed with access to real-time information from the X platform. It features multimodal input capabilities and improved reasoning over its predecessor. Grok 2 targets conversational assistants, image analysis, and real-time information retrieval tasks via the xAI API.
11 months newer
Grok 2
xAI
2024-08-14
GPT-OSS-120B
OpenAI
2025-08
Pricing Comparison
Cost per million tokens (USD)
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GPT-OSS-120B
Input:$Infinity
Output:$Infinity
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Grok 2
Input:$2.00
Output:$10.00($Infinity cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-OSS-120B
Average Score:1.6%(+0.6%)
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Grok 2
Average Score:1.0%
Performance comparison across key benchmark categories
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GPT-OSS-120B
Agents1.6%(+0.6%)
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Grok 2
Agents1.0%
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 2
1 providers
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GPT-OSS-120B
Avg Score:1.6%(+0.6%)
Providers:1
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Grok 2
Avg Score:1.0%
Providers:1