Top open-weight AI models for coding in late 2026
Top open-weight AI models for coding in late 2026 • GLM 5.3 (Z.ai / Zhipu AI): A 753B-parameter flagship model (with 8 active experts per token) featuring a 1,048,576-token context window, currently ranked among the top overall and long-horizon agentic coding models. • DeepSeek V4 Pro (DeepSeek): A 1.6T-parameter (49B active) MoE model with a 1M-token context window under an MIT license, delivering frontier-class code reasoning and repository-scale analysis at a fraction of closed-model costs. • Kimi K3 (Moonshot AI): A massive 2.8T-parameter (104B active) frontier open-weight model with a 1M+ token context window, excelling in frontend code generation, multi-agent workflows, and complex long-document tasks. • Qwen 3.8 Max (Alibaba): A 2.4T-parameter model (95B active) supporting long contexts up to ~1M tokens, widely praised for enterprise-grade coding and agentic execution. • gpt-oss (OpenAI): OpenAI's open-reasoning model available in 120B and 20B parameter variants unde...