Glossary · Agents & harnesses

JSON mode

A model feature that forces the output to be syntactically valid JSON.

Related terms

• AI agent
• LangChain
• LlamaIndex
• MCP server
• Model Context Protocol (MCP)
• ReAct pattern

Vynaris is an inference gateway that routes each request to the cheapest right-sized model and shows the receipt. Get an API key or read the docs.