Z.ai from China has recently made waves by open-sourcing its latest model, GLM-5.1, which is already showing superior performance compared to leading models like GPT-5.4, Claude Opus 4.6, and Gemini 3.1 Pro on SWE-Bench Pro, a challenging coding benchmark derived from GitHub tasks. In assessments conducted by platforms focused on artificial intelligence and chatbot performance, GLM-5.1 ranks closely behind top models from prominent companies such as Google, Anthropic, and OpenAI in terms of overall intelligence. A standout feature of GLM-5.1 is its capability to manage extended autonomous tasks, lasting up to eight hours. Pricing for Z.ai's coding plans begins at $10 per month, with a promotional discount of 10% available through an invite link. The Lite plan, priced at $10, offers approximately three times the usage compared to Claude Code Pro at $20. Users can also utilize the coding plan with OpenClaw, although during peak loads, tasks may face queuing and rate limitations.
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