From ff46bb478bfbef98dd35ea705fa4e92a33881142 Mon Sep 17 00:00:00 2001 From: Juan Ezquerro LLanes Date: Fri, 2 Oct 2026 02:55:23 +0200 Subject: [PATCH] fix(ollama): raise ollama floor to 0.6.3 for thinking levels (#40986) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes #40985 --- `ChatOllama(reasoning="xhigh")` currently raises a Pydantic `ValidationError` instead of reaching Ollama, because the `ollama` floor still admits clients that reject model-defined thinking levels. `ChatOllama.reasoning` is `bool | str | None` and `_chat_params()` forwards the string verbatim as `think`. Since ollama 0.6.3 (ollama/ollama-python#744) `ChatRequest.think` is `Optional[Union[bool, str]]`, matching the Ollama Go backend. But the declared range `ollama>=0.6.1,<1.0.0` still admits 0.6.1 and 0.6.2, where the annotation is `Optional[Union[bool, Literal["low", "medium", "high"]]]` and `"xhigh"` or `"max"` fails validation client-side. Verified both directions on the same snippet — `ChatOllama(reasoning="xhigh")._chat_params(...)["think"] == "xhigh"`, then constructing `ChatRequest(..., think=...)`: - ollama 0.6.2 → `ValidationError` on `think.bool` and `think.literal['low','medium','high']` - ollama 0.6.3 → validates This raises the floor only; no `ChatOllama` code path changes. Narrowing `reasoning` inside `ChatOllama` instead would reject levels the Ollama backend accepts and duplicate type logic the client now owns. Per the PR template I'm opening this alongside the issue rather than pre-approved, so please assign it to me if the approach looks right. ## Release note `langchain-ollama` now requires `ollama>=0.6.3`, fixing a `ValidationError` when `ChatOllama` is configured with a model-defined reasoning level such as `"xhigh"` or `"max"`. --- libs/partners/ollama/pyproject.toml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libs/partners/ollama/pyproject.toml b/libs/partners/ollama/pyproject.toml index 8f0968260e..c9b3659a8b 100644 --- a/libs/partners/ollama/pyproject.toml +++ b/libs/partners/ollama/pyproject.toml @@ -23,7 +23,7 @@ classifiers = [ version = "1.1.0" requires-python = ">=3.10.0,<4.0.0" dependencies = [ - "ollama>=0.6.1,<1.0.0", + "ollama>=0.6.3,<1.0.0", "langchain-core>=1.4.7,<2.0.0", ]