zai-org/GLM-5.1

GLM-5.1: Next-Generation Agentic Engineering Model

GLM-5.1, developed by zai-org, is a flagship model designed for advanced agentic engineering, showcasing significantly enhanced coding capabilities compared to its predecessor, GLM-5. This model is distinguished by its ability to maintain effectiveness over much longer task horizons, handling ambiguous problems with superior judgment and sustaining productivity through extended sessions.

Key Capabilities

• Advanced Agentic Problem Solving: Breaks down complex problems, runs experiments, interprets results, and identifies blockers with high precision.
• Sustained Optimization: Revisits reasoning and revises strategies through repeated iteration, enabling optimization over hundreds of rounds and thousands of tool calls.
• Superior Coding Performance: Achieves state-of-the-art results on SWE-Bench Pro (58.4%) and significantly outperforms GLM-5 on NL2Repo (42.7%) for repository generation and Terminal-Bench 2.0 (63.5%) for real-world terminal tasks.
• Robust Benchmark Scores: Demonstrates strong performance across various benchmarks, including CyberGym (68.7%) and BrowseComp (68.0%), indicating broad utility in complex environments.

Good For

• Agentic Applications: Ideal for scenarios requiring models to perform multi-step, iterative tasks with tool use and complex decision-making.
• Code Generation and Refinement: Excels in generating and refining code, particularly for intricate software engineering problems.
• Real-world Terminal Tasks: Highly effective for automating and solving problems within terminal environments.
• Long-Horizon Problem Solving: Suitable for tasks that demand sustained reasoning and adaptation over extended periods, where other models might plateau early.