Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 15.8% higher average benchmark score. GPT OSS 20B offers 6.1K more tokens in context window than Llama 3.1 70B Instruct. Both models have similar pricing. Llama 3.1 70B Instruct is available on 9 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.
Meta
Llama 3.1 70B was created as a balanced open-source model, designed to provide strong performance with 70 billion parameters while remaining practical for many deployment scenarios. Built to serve as a versatile foundation for fine-tuning and application development, it combines capability with accessibility in the open-source ecosystem.
1 year newer

Llama 3.1 70B Instruct
Meta
2024-07-23

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

GPT OSS 20B

Llama 3.1 70B Instruct
Context window and performance specifications
Average performance across 2 common benchmarks

GPT OSS 20B

Llama 3.1 70B Instruct
Available providers and their performance metrics

GPT OSS 20B
Groq
Novita
OpenAI
ZeroEval

GPT OSS 20B

Llama 3.1 70B Instruct

GPT OSS 20B

Llama 3.1 70B Instruct

Llama 3.1 70B Instruct
Bedrock
Cerebras
DeepInfra
Fireworks
Groq
Hyperbolic
Lambda
Sambanova
Together