I tested 4 free 70B-class LLM endpoints for real production work — here's what each is actually good at

The question Most "production-grade" AI tools ship on paid endpoints — OpenAI, Anthropic, Gemini Pro. That's the safe choice. It's also the expensive one. I wanted to know: in mid-2026, can free 70B-class open-source endpoints actually carry a real product workload? Not a toy chatbot — a tool that