GLM-4.6
by Z.ai (GLM project)
Open-source flagship coding and reasoning model with an expanded 200k context window
See vendor docs and community benchmarks
Summary
GLM-4.6 is a 2025 open-source model release focused on coding, agentic workflows, and expanded-context reasoning. It improves on GLM-4.5 with a larger context window (~200k tokens), better coding performance, and improved token efficiency.
Features
- 200k token context window (large-context workloads)
- Strong coding performance and multi-file refactor capabilities
- Improved reasoning and agentic tool use
- Integrations with coding platforms and CLIs (GLM Coding Plan, OpenRouter)
- Competitive performance vs Deepseek V3.2 and Claude Sonnet models in benchmark suites
Superpowers
GLM-4.6 is for developers and research teams wanting an open-source model that handles large codebases and long-running agent tasks with better token efficiency and strong coding outputs.
Pricing & access
- Available via GLM Coding Plan subscriptions and self-hosting through community distributions. Check Z.ai and OpenRouter for current access paths and pricing.
Known limitations & notes
- May trail some closed-source models (e.g., Sonnet 4.5) on certain coding benchmarks
- Self-hosting large-context models requires substantial infra (GPU RAM, NVMe)
Sources / notes:
- Community benchmarks, release notes, and comparative analyses.