FastChat vs ZCode

A side-by-side comparison of features, pricing, and characteristics.

FastChat

FastChat is an open platform for training, serving, and evaluating large language model-based chatbots.

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ZCode

An agentic development environment (ADE) desktop app by Z.ai built for planning, coding, reviewing, and deploying software powered by GLM-5.2.

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AttributeFastChatZCode
Pricing typeFreeFree + paid (from $18/mo)
Korean supportOfficialNo
PlatformsWeb, API, CLImacOS, Windows, Linux
Open sourceYesNo
API availableAvailable-
SDKAvailable-
LLM-basedYesYes
MultimodalYes-
AI model-GLM
GitHub Stars39.5K-
VendorLMSYS OrgZ.AI Co., Ltd.
CategoryDeveloper ToolsDeveloper Tools
DetailsView View

FastChat key features

  • OpenAI-compatible API
  • Support for various LLMs
  • Web-based Chat UI
  • Distributed Serving Architecture
  • Evaluation Tools (MT-bench)
  • vLLM & LightLLM Integration

ZCode key features

  • Goal-based task management for long-horizon planning and execution
  • Deep integration with GLM-5.2 reasoning and coding model
  • Multi-agent orchestration and coordination for development workflows
  • Mobile remote control via WeChat and Telegram
  • Built-in terminal, version control, and MCP support