Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 20.9% higher average benchmark score. Mistral Small 3 24B Base supports multimodal inputs. GPT OSS 20B is available on 4 providers. Overall, GPT OSS 20B is the stronger choice for coding tasks.
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.
Mistral AI
Mistral Small 24B Base was developed as a 24-billion-parameter foundation model, designed to serve as a base for fine-tuning and customization. Built to provide a strong starting point for domain-specific applications, it represents an intermediate-scale option in Mistral's model lineup.
6 months newer

Mistral Small 3 24B Base
Mistral AI
2025-01-30

GPT OSS 20B
OpenAI
2025-08-05
Context window and performance specifications
Average performance across 2 common benchmarks

GPT OSS 20B

Mistral Small 3 24B Base
Mistral Small 3 24B Base
2023-10-01
Available providers and their performance metrics

GPT OSS 20B
Groq
Novita
OpenAI
ZeroEval

GPT OSS 20B

Mistral Small 3 24B Base

GPT OSS 20B

Mistral Small 3 24B Base

Mistral Small 3 24B Base