Best Open Source LLMs in 2026: We Reviewed 7 Models

What this post added

This post introduces Kimi K3 as a frontier model with a 2.8T parameter count and 1M context window, noting its pending weights and Fireworks listing. It also details the Kimi K2.7 Code model, highlighting its 1T parameter count and 256K context window for coding tasks. The post provides a comparative analysis of several open-source LLMs, including GLM 5.2, DeepSeek-V4-Pro, DeepSeek-V4-Flash, MiniMax M3, Qwen3.7 Plus, gpt-oss-120b, and Gemma 4 31B IT, discussing their technical specifications, benchmark performance, and suitability for different workloads. It also touches upon Fireworks' capabilities for deploying these models at scale.