Comprehensive side-by-side LLM comparison
Llama 3.1 8B Instruct is available on 9 providers. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-5 Codex was developed as a specialized variant of GPT-5 optimized for programming and software development tasks. Built to understand and generate code across multiple programming languages, it serves developers with enhanced capabilities for code completion, debugging, translation, and explanation of complex codebases.
Meta
Llama 3.1 8B was developed as an efficient open-source model, designed to bring capable instruction-following to applications with limited computational resources. Built with 8 billion parameters, it provides a lightweight option for developers seeking reliable performance without the overhead of larger models.
1 year newer

Llama 3.1 8B Instruct
Meta
2024-07-23

GPT-5 Codex
OpenAI
2025-09-15
Context window and performance specifications
Llama 3.1 8B Instruct
2023-12-31
GPT-5 Codex
2024-09-30
Available providers and their performance metrics

GPT-5 Codex

Llama 3.1 8B Instruct
Bedrock

GPT-5 Codex

Llama 3.1 8B Instruct

GPT-5 Codex

Llama 3.1 8B Instruct
Cerebras
DeepInfra
Fireworks
Groq
Hyperbolic
Lambda
Sambanova
Together