Comprehensive side-by-side LLM comparison
GPT OSS 120B leads with 16.5% higher average benchmark score. Grok-2 mini supports multimodal inputs. GPT OSS 120B is available on 5 providers. Overall, GPT OSS 120B is the stronger choice for coding tasks.
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.
xAI
Grok 2 Mini was created as a more efficient variant of Grok 2, designed to provide strong capabilities with reduced computational requirements. Built to make Grok 2's advancements accessible to applications with tighter resource constraints, it balances performance with practical deployment needs.
11 months newer

Grok-2 mini
xAI
2024-08-13

GPT OSS 120B
OpenAI
2025-08-05
Context window and performance specifications
Average performance across 2 common benchmarks

GPT OSS 120B

Grok-2 mini
Available providers and their performance metrics

GPT OSS 120B
DeepInfra
Groq
Novita
OpenAI
ZeroEval

GPT OSS 120B

Grok-2 mini

GPT OSS 120B

Grok-2 mini

Grok-2 mini