Class: BaseChatModel

chat_models/base.BaseChatModel

Base class for language models.

Hierarchy

• BaseLanguageModel

  ↳ BaseChatModel

  ↳↳ SimpleChatModel

  ↳↳ ChatOpenAI

  ↳↳ ChatAnthropic

Constructors

constructor

• Protected new BaseChatModel(«destructured»)

Parameters

Name	Type
«destructured»	BaseLanguageModelParams

Overrides

BaseLanguageModel.constructor

Defined in

langchain/src/chat_models/base.ts:31

Properties

callbackManager

• callbackManager: CallbackManager

Inherited from

BaseLanguageModel.callbackManager

Defined in

langchain/src/base_language/index.ts:34

---

caller

• Protected caller: AsyncCaller

The async caller should be used by subclasses to make any async calls, which will thus benefit from the concurrency and retry logic.

Inherited from

BaseLanguageModel.caller

Defined in

langchain/src/base_language/index.ts:40

---

verbose

• verbose: boolean

Whether to print out response text.

Inherited from

BaseLanguageModel.verbose

Defined in

langchain/src/base_language/index.ts:32

Methods

_combineLLMOutput

▸ Optional Abstract _combineLLMOutput(...llmOutputs): undefined | Record<string, any>

Parameters

Name	Type
...llmOutputs	(undefined | Record<string, any>)[]

Returns

undefined | Record<string, any>

Defined in

langchain/src/chat_models/base.ts:35

---

_generate

▸ Abstract _generate(messages, stop?): Promise<ChatResult>

Parameters

Name	Type
messages	BaseChatMessage[]
stop?	string[]

Returns

Promise<ChatResult>

Defined in

langchain/src/chat_models/base.ts:92

---

_identifyingParams

▸ _identifyingParams(): Record<string, any>

Get the identifying parameters of the LLM.

Returns

Record<string, any>

Inherited from

BaseLanguageModel._identifyingParams

Defined in

langchain/src/base_language/index.ts:101

---

_llmType

▸ Abstract _llmType(): string

Returns

string

Overrides

BaseLanguageModel._llmType

Defined in

langchain/src/chat_models/base.ts:80

---

_modelType

▸ _modelType(): string

Returns

string

Overrides

BaseLanguageModel._modelType

Defined in

langchain/src/chat_models/base.ts:76

---

call

▸ call(messages, stop?): Promise<BaseChatMessage>

Parameters

Name	Type
messages	BaseChatMessage[]
stop?	string[]

Returns

Promise<BaseChatMessage>

Defined in

langchain/src/chat_models/base.ts:97

---

callPrompt

▸ callPrompt(promptValue, stop?): Promise<BaseChatMessage>

Parameters

Name	Type
promptValue	BasePromptValue
stop?	string[]

Returns

Promise<BaseChatMessage>

Defined in

langchain/src/chat_models/base.ts:106

---

generate

▸ generate(messages, stop?): Promise<LLMResult>

Parameters

Name	Type
messages	BaseChatMessage[][]
stop?	string[]

Returns

Promise<LLMResult>

Defined in

langchain/src/chat_models/base.ts:39

---

generatePrompt

▸ generatePrompt(promptValues, stop?): Promise<LLMResult>

Parameters

Name	Type
promptValues	BasePromptValue[]
stop?	string[]

Returns

Promise<LLMResult>

Overrides

BaseLanguageModel.generatePrompt

Defined in

langchain/src/chat_models/base.ts:82

---

getNumTokens

▸ getNumTokens(text): Promise<number>

Parameters

Name	Type
text	string

Returns

Promise<number>

Inherited from

BaseLanguageModel.getNumTokens

Defined in

langchain/src/base_language/index.ts:62

---

serialize

▸ serialize(): SerializedLLM

Return a json-like object representing this LLM.

Returns

SerializedLLM

Inherited from

BaseLanguageModel.serialize

Defined in

langchain/src/base_language/index.ts:108

---

deserialize

▸ Static deserialize(data): Promise<BaseLanguageModel>

Load an LLM from a json-like object describing it.

Parameters

Name	Type
data	SerializedLLM

Returns

Promise<BaseLanguageModel>

Inherited from

BaseLanguageModel.deserialize

Defined in

langchain/src/base_language/index.ts:119