FastChat vs Gemini 3.8 Flash

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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Gemini 3.8 Flash

Google stable Flash model for long-horizon software engineering and autonomous agents.

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AttributeFastChatGemini 3.8 Flash
Pricing typeFreePaid
Korean supportOfficialNo
PlatformsWeb, API, CLI-
Open sourceYesNo
API availableAvailableAvailable
SDKAvailable-
LLM-basedYes-
MultimodalYes-
AI model--
GitHub Stars39.5K-
VendorLMSYS Org-
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