+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT OSS 120B vs GPT-5 mini
Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. GPT-5 mini offers 265.9K more tokens in context window than GPT OSS 120B. GPT OSS 120B is $1.71 cheaper per million tokens. GPT-5 mini supports multimodal inputs. GPT OSS 120B is available on 5 providers. Both models have their strengths depending on your specific coding needs.
+
+
+
+
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.
+
+
+
+
OpenAI
GPT-5 Mini was created as a more accessible version of GPT-5, designed to provide strong capabilities with improved efficiency and lower operational costs. Built to extend GPT-5's advancements to a broader range of applications, it balances advanced performance with practical deployment considerations.
2 days newer
GPT OSS 120B
OpenAI
2025-08-05
GPT-5 mini
OpenAI
2025-08-07
+
+
+
+
+
+
+
+
+
+
+
+
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
GPT OSS 120B
Input:$0.09
Output:$0.45($1.71 cheaper)
+
+
+
+
GPT-5 mini
Input:$0.25
Output:$2.00
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
+
+
+
+
GPT OSS 120B
Average Score:49.6%(+0.1%)
+
+
+
+
GPT-5 mini
Average Score:49.5%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
GPT-5 mini
2024-05-30
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
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
+
+
+
+
+
GPT OSS 120B
Avg Score:49.6%(+0.1%)
Providers:5
+
+
+
+
GPT-5 mini
Avg Score:49.5%
Providers:2