Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 16.1% higher average benchmark score. GPT OSS 20B offers 126.0K more tokens in context window than Pixtral-12B. Both models have similar pricing. Pixtral-12B 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
Pixtral 12B was introduced as Mistral's multimodal vision-language model, designed to understand and reason about both images and text. Built with 12 billion parameters for integrated visual and textual processing, it extends Mistral's capabilities into multimodal applications.
10 months newer

Pixtral-12B
Mistral AI
2024-09-17

GPT OSS 20B
OpenAI
2025-08-05
Cost per million tokens (USD)

GPT OSS 20B

Pixtral-12B
Context window and performance specifications
Average performance across 1 common benchmarks

GPT OSS 20B

Pixtral-12B
Available providers and their performance metrics

GPT OSS 20B
Groq
Novita
OpenAI
ZeroEval

GPT OSS 20B

Pixtral-12B

GPT OSS 20B

Pixtral-12B

Pixtral-12B
Mistral AI