Uses of Interface
dev.langchain4j.model.decision.DecisionModel

Packages that use DecisionModel

Package	Description
dev.langchain4j.agentic.patterns.decisionrouter
dev.langchain4j.guardrails
dev.langchain4j.model.chat.router
dev.langchain4j.model.ollama
dev.langchain4j.model.openai
dev.langchain4j.model.openaiofficial
dev.langchain4j.model.scoring
dev.langchain4j.model.typesafe
dev.langchain4j.rag.query.router
dev.langchain4j.service.decision
dev.langchain4j.service.decision.internal
dev.langchain4j.service.tool
dev.langchain4j.service.tool.search.decision

Uses of DecisionModel in dev.langchain4j.agentic.patterns.decisionrouter

Constructors in dev.langchain4j.agentic.patterns.decisionrouter with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionRouterPlanner(DecisionModel decisionModel)	Creates a router invoking only the subagent that the decision model considers the most probable.
	DecisionRouterPlanner(DecisionModel decisionModel, double activationThreshold)	Creates a router asking the decision model, for each subagent, whether it should handle the request, and invoking in parallel all the subagents whose probability of "yes" is at least the given threshold.

Uses of DecisionModel in dev.langchain4j.guardrails

Methods in dev.langchain4j.guardrails with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionModelInputGuardrail.Builder	DecisionModelInputGuardrail.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that answers the checks.
DecisionModelOutputGuardrail.Builder	DecisionModelOutputGuardrail.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that answers the checks.

Constructors in dev.langchain4j.guardrails with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionModelInputGuardrail(DecisionModel decisionModel, Map<String,String> checks)	Creates a guardrail with the given checks and the default threshold.
	DecisionModelOutputGuardrail(DecisionModel decisionModel, Map<String,String> checks)	Creates a guardrail with the given checks and the default threshold.

Uses of DecisionModel in dev.langchain4j.model.chat.router

Methods in dev.langchain4j.model.chat.router with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionModelChatModelRouter.Builder	DecisionModelChatModelRouter.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that selects the route.

Constructors in dev.langchain4j.model.chat.router with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionModelChatModelRouter(DecisionModel decisionModel)

Uses of DecisionModel in dev.langchain4j.model.ollama

Classes in dev.langchain4j.model.ollama that implement DecisionModel

Modifier and Type	Class	Description
class	OllamaDecisionModel	A DecisionModel backed by the decision models that Ollama runs locally, such as Nimble, Tev1 and Clef, through its System One API (POST /v1/systemone, Ollama v0.35.0 or later).

Uses of DecisionModel in dev.langchain4j.model.openai

Classes in dev.langchain4j.model.openai that implement DecisionModel

Modifier and Type	Class	Description
class	OpenAiDecisionModel	A DecisionModel backed by the OpenAI Decisions API (POST /v1/decisions), which answers yes/no, choice and scale questions about a text, image or conversation input with probabilities.

Uses of DecisionModel in dev.langchain4j.model.openaiofficial

Classes in dev.langchain4j.model.openaiofficial that implement DecisionModel

Modifier and Type	Class	Description
class	OpenAiOfficialDecisionModel	A DecisionModel backed by the OpenAI Decisions API, using the official OpenAI Java SDK.

Uses of DecisionModel in dev.langchain4j.model.scoring

Methods in dev.langchain4j.model.scoring with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionScoringModel.Builder	DecisionScoringModel.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that scores the segments.

Constructors in dev.langchain4j.model.scoring with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionScoringModel(DecisionModel decisionModel)

Uses of DecisionModel in dev.langchain4j.model.typesafe

Classes in dev.langchain4j.model.typesafe that implement DecisionModel

Modifier and Type	Class	Description
class	TypeSafeDecisionModel	A DecisionModel backed by the TypeSafe System One API (POST /v1/systemone), which serves decision models such as Jev.

Uses of DecisionModel in dev.langchain4j.rag.query.router

Methods in dev.langchain4j.rag.query.router with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionModelQueryRouter.Builder	DecisionModelQueryRouter.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that decides which retrievers to use.

Constructors in dev.langchain4j.rag.query.router with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionModelQueryRouter(DecisionModel decisionModel, Map<ContentRetriever, String> retrieverToDescription)

Uses of DecisionModel in dev.langchain4j.service.decision

Methods in dev.langchain4j.service.decision that return DecisionModel

Modifier and Type	Method	Description
protected DecisionModel	DecisionServices.Builder.decisionModel()

Methods in dev.langchain4j.service.decision with parameters of type DecisionModel

Modifier and Type	Method	Description
static <T> T	DecisionServices.create(Class<T> serviceInterface, DecisionModel decisionModel)	Creates an implementation of the given interface whose methods are answered by the given decision model.
DecisionServices.Builder<T>	DecisionServices.Builder.decisionModel(DecisionModel decisionModel)

Uses of DecisionModel in dev.langchain4j.service.decision.internal

Methods in dev.langchain4j.service.decision.internal that return DecisionModel

Modifier and Type	Method	Description
DecisionModel	DecisionServiceConfig.decisionModel()

Methods in dev.langchain4j.service.decision.internal with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionServiceConfig.Builder	DecisionServiceConfig.Builder.decisionModel(DecisionModel decisionModel)

Uses of DecisionModel in dev.langchain4j.service.tool

Methods in dev.langchain4j.service.tool with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionModelFilteringToolProvider.Builder	DecisionModelFilteringToolProvider.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that decides which tools are relevant.

Constructors in dev.langchain4j.service.tool with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionModelFilteringToolProvider(ToolProvider toolProvider, DecisionModel decisionModel)

Uses of DecisionModel in dev.langchain4j.service.tool.search.decision

Methods in dev.langchain4j.service.tool.search.decision with parameters of type DecisionModel

Modifier and Type	Method	Description
DecisionModelToolSearchStrategy.Builder	DecisionModelToolSearchStrategy.Builder.decisionModel(DecisionModel decisionModel)	Sets the decision model that decides which tools match the query.

Constructors in dev.langchain4j.service.tool.search.decision with parameters of type DecisionModel

Modifier	Constructor	Description
	DecisionModelToolSearchStrategy(DecisionModel decisionModel)
	DecisionModelToolSelector(DecisionModel decisionModel, PromptTemplate questionTemplate, Integer maxResults, Double minProbability, Integer maxToolsPerDecisionRequest)