Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 26.2% higher average benchmark score. GPT OSS 20B offers 198.1K more tokens in context window than Mistral Small 3 24B Instruct. Both models have similar pricing. 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 Instruct was created as the instruction-tuned version of the 24B base model, designed to follow user instructions reliably. Built to serve general-purpose applications requiring moderate capability, it balances performance with deployment practicality.
6 months newer

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

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

GPT OSS 20B

Mistral Small 3 24B Instruct
Context window and performance specifications
Average performance across 1 common benchmarks

GPT OSS 20B

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

GPT OSS 20B
Groq
Novita
OpenAI
ZeroEval

GPT OSS 20B

Mistral Small 3 24B Instruct

GPT OSS 20B

Mistral Small 3 24B Instruct

Mistral Small 3 24B Instruct
DeepInfra
Mistral AI