Looking for an Open-Source LLM to Replace Llama 3.3 70B Versatile

A developer is seeking open-source replacements for Llama 3.3 70B Versatile after Groq shut down the model, focusing on smaller parameter sizes with comparable performance for RAG, agentic workflows, and structured output. The user is considering Qwen, Mistral, DeepSeek, Gemma, and GPT-OSS, and requests recommendations for 2-5 models with details on quality, reasoning, tool calling, JSON reliability, context length, VRAM, speed, and production deployment.

Hi everyone, I was previously using Llama 3.3 70B Versatile through Groq for my application, but this model has been shut down by Groq, so I need to replace it with another model. I am currently looking for a fully open-source/open-weight model available on Hugging Face that would be suitable for my use case. My application involves: RAG-based workflows Agentic AI workflows Prompt engineering and prompt generation Structured/JSON output Tool/function calling Good instruction following Reasoning capability Multilingual input/output Production use I am particularly interested in models with smaller parameter sizes than 70B if they can provide comparable performance. Some models I am currently considering are: Qwen Mistral DeepSeek Gemma GPT-OSS Could you please recommend 2–5 open-source models that would be good replacements for Llama 3.3 70B for this type of application? It would also be helpful if you could share your experience regarding: Model quality compared with Llama 3.3 70B Reasoning capability Tool/function calling JSON/structured output reliability Context length VRAM/RAM requirements Inference speed Production deployment experience Recommended quantization, if applicable I am planning to test multiple models on the same set of prompts and compare their results before selecting the final model. Thanks in advance for your recommendations