Langchain_ollama structured output failed for multiple new models on Ollama

Author: Genesis1231Created Mar 13, 2025Updated May 13, 2025

Phi4-mini Qwen QWQ

these new models have tools and supposedly should support structured output. ChatOllama(base_url, model, temperature).with_structured_output(format) but they return null when use structured output with pydantic class.

am i doing something wrong?

Source: langchain-ai/local-deep-researcher