bind_tools from ChatOllama not working

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Example Code

def multiply(x: int, y: int) -> int:
    """Multiplies two integers and returns the result.

    Args:
        x: First number to multiply
        y: Second number to multiply
    """
    return x * y

ollama_llm = ChatOllama(
        model="qwen3:8b",
        verbose=True,
        disable_streaming="tool_calling",
    )

    messages = [
        {"role": "user", "content": "What is 2 * 7?"},
    ]

    tool_node = ToolNode([multiply])

    ollama_llm.bind_tools([multiply])

    response = ollama_llm.invoke(messages)

    print(response)
    
    print(tool_node.invoke({"messages": [response]}))

def multiply(x: int, y: int) -> int:
    """Multiplies two integers and returns the result.

    Args:
        x: First number to multiply
        y: Second number to multiply
    """
    return x * y

ollama_llm = ChatOllama(
        model="qwen3:8b",
        verbose=True,
        disable_streaming="tool_calling",
    )

    messages = [
        {"role": "user", "content": "What is 2 * 7?"},
    ]

    tool_node = ToolNode([multiply])

    # ollama_llm.bind_tools([multiply])

    response = ollama_llm.invoke(messages, tools=[multiply])

    print(response)
    
    print(tool_node.invoke({"messages": [response]}))

Description

Hello everyone,

I'm currently working with tool calls in a ChatOllama model and have encountered an issue. I provided two code snippets:

1. Using bind_tools (as per the documentation) - This snippet doesn't seem to work for some reason. (Model doesn't do any tool call)
2. Using tools in the invoke call - This snippet works perfectly fine. (Tool call works every time)

I'm wondering if I'm making a mistake with the bind_tools call or if there might be an issue with bind_tools in the ChatOllama model. Any insights or suggestions would be greatly appreciated!

Thank you!

System Info

System Information

OS: Linux
OS Version: #1 SMP Tue Nov 5 00:21:55 UTC 2024
Python Version: 3.12.3 (main, Feb 4 2025, 14:48:35) [GCC 13.3.0]

Package Information

langchain_core: 0.3.59
langsmith: 0.3.42
langchain_ollama: 0.3.2
langchain_openai: 0.3.16
langgraph_sdk: 0.1.69
langgraph_swarm: 0.0.11

Optional packages not installed

langserve

Other Dependencies

httpx: 0.28.1
jsonpatch<2.0,>=1.33: Installed. No version info available.
langchain-core<0.4.0,>=0.3.40: Installed. No version info available.
langchain-core<1.0.0,>=0.3.52: Installed. No version info available.
langchain-core<1.0.0,>=0.3.58: Installed. No version info available.
langgraph>=0.3.5: Installed. No version info available.
langsmith-pyo3: Installed. No version info available.
langsmith<0.4,>=0.1.125: Installed. No version info available.
ollama<1,>=0.4.4: Installed. No version info available.
openai-agents: Installed. No version info available.
openai<2.0.0,>=1.68.2: Installed. No version info available.
opentelemetry-api: Installed. No version info available.
opentelemetry-exporter-otlp-proto-http: Installed. No version info available.
opentelemetry-sdk: Installed. No version info available.
orjson: 3.10.18
packaging: 24.2
packaging<25,>=23.2: Installed. No version info available.
pydantic: 2.11.4
pydantic<3.0.0,>=2.5.2;: Installed. No version info available.
pydantic<3.0.0,>=2.7.4;: Installed. No version info available.
pytest: Installed. No version info available.
PyYAML>=5.3: Installed. No version info available.
requests: 2.32.3
requests-toolbelt: 1.0.0
rich: Installed. No version info available.
tenacity!=8.4.0,<10.0.0,>=8.1.0: Installed. No version info available.
tiktoken<1,>=0.7: Installed. No version info available.
typing-extensions>=4.7: Installed. No version info available.
zstandard: 0.23.0