Best Open Source LLMs to Replace Sonnet 4.5 or Opus 4.6: Affordable AI Coding Alternatives 2026
Discover the top 5 open source language models that can replace Claude Sonnet 4.5 or Opus 4.6 for coding tasks at a fraction of the cost: GLM-5, Kimi K2.5, Qwen-Max, MiniMax M2.5, and Devstral 2.