Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 10.1% higher average benchmark score. GPT OSS 20B is available on 4 providers. Overall, GPT OSS 20B is the stronger choice for coding tasks.
Gemma 2 27B was developed as an open-source language model with 27 billion parameters, designed to provide researchers and developers with a capable, instruction-tuned model for experimentation and deployment. Built to democratize access to advanced language understanding, it combines strong performance with the flexibility of open-source licensing.
OpenAI
GPT-OSS 20B was created as a smaller open-source variant, designed to balance capability with accessibility for researchers and developers. Built with 20 billion parameters, it provides a more approachable entry point for those seeking to work with open-source language models while benefiting from OpenAI's architectural insights.
1 year newer

Gemma 2 27B
2024-06-27

GPT OSS 20B
OpenAI
2025-08-05
Context window and performance specifications
Average performance across 1 common benchmarks

Gemma 2 27B

GPT OSS 20B
Available providers and their performance metrics

Gemma 2 27B

GPT OSS 20B
Groq

Gemma 2 27B

GPT OSS 20B

Gemma 2 27B

GPT OSS 20B
Novita
OpenAI
ZeroEval