---
type: CKG Bundle
title: Langchain Core
tags: [CS & AI]
timestamp: 2026-06-18T00:00:00Z
ckg:
  id: langchain-core
  nodes: 180
  license: CC BY 4.0
---

# Langchain Core — Compressed Knowledge Graph

```csv
ConceptID,ConceptLabel,TaxonomyID
1,_import_utils,FOUND
2,caches,FOUND
3,chat_history,FOUND
4,chat_loaders,FOUND
5,chat_sessions,FOUND
6,cross_encoders,FOUND
7,document_loaders,FOUND
8,document_loaders.base,FOUND
9,document_loaders.blob_loaders,FOUND
10,document_loaders.langsmith,FOUND
11,env,FOUND
12,exceptions,FOUND
13,globals,FOUND
14,outputs,FOUND
15,outputs.chat_generation,FOUND
16,outputs.chat_result,FOUND
17,outputs.generation,FOUND
18,outputs.llm_result,FOUND
19,outputs.run_info,FOUND
20,prompt_values,FOUND
21,rate_limiters,FOUND
22,stores,FOUND
23,structured_query,FOUND
24,sys_info,FOUND
25,version,FOUND
26,documents,DOCUMENT
27,documents.base,DOCUMENT
28,documents.compressor,DOCUMENT
29,documents.transformers,DOCUMENT
30,messages,MESSAGE
31,messages.ai,MESSAGE
32,messages.base,MESSAGE
33,messages.block_translators,MESSAGE
34,messages.block_translators.anthropic,MESSAGE
35,messages.block_translators.bedrock,MESSAGE
36,messages.block_translators.bedrock_converse,MESSAGE
37,messages.block_translators.google_genai,MESSAGE
38,messages.block_translators.google_vertexai,MESSAGE
39,messages.block_translators.groq,MESSAGE
40,messages.block_translators.langchain_v0,MESSAGE
41,messages.block_translators.openai,MESSAGE
42,messages.chat,MESSAGE
43,messages.content,MESSAGE
44,messages.function,MESSAGE
45,messages.human,MESSAGE
46,messages.modifier,MESSAGE
47,messages.system,MESSAGE
48,messages.tool,MESSAGE
49,messages.utils,MESSAGE
50,runnables,RUNNABLE
51,runnables.base,RUNNABLE
52,runnables.branch,RUNNABLE
53,runnables.config,RUNNABLE
54,runnables.configurable,RUNNABLE
55,runnables.fallbacks,RUNNABLE
56,runnables.graph,RUNNABLE
57,runnables.graph_ascii,RUNNABLE
58,runnables.graph_mermaid,RUNNABLE
59,runnables.graph_png,RUNNABLE
60,runnables.history,RUNNABLE
61,runnables.passthrough,RUNNABLE
62,runnables.retry,RUNNABLE
63,runnables.router,RUNNABLE
64,runnables.schema,RUNNABLE
65,runnables.utils,RUNNABLE
66,language_models,LLM
67,language_models._compat_bridge,LLM
68,language_models._utils,LLM
69,language_models.base,LLM
70,language_models.chat_model_stream,LLM
71,language_models.chat_models,LLM
72,language_models.fake,LLM
73,language_models.fake_chat_models,LLM
74,language_models.llms,LLM
75,language_models.model_profile,LLM
76,example_selectors,PROMPT
77,example_selectors.base,PROMPT
78,example_selectors.length_based,PROMPT
79,example_selectors.semantic_similarity,PROMPT
80,prompts,PROMPT
81,prompts.base,PROMPT
82,prompts.chat,PROMPT
83,prompts.dict,PROMPT
84,prompts.few_shot,PROMPT
85,prompts.few_shot_with_templates,PROMPT
86,prompts.image,PROMPT
87,prompts.loading,PROMPT
88,prompts.message,PROMPT
89,prompts.prompt,PROMPT
90,prompts.string,PROMPT
91,prompts.structured,PROMPT
92,retrievers,RETRIEVER
93,vectorstores,VECTORSTORE
94,vectorstores.base,VECTORSTORE
95,vectorstores.in_memory,VECTORSTORE
96,vectorstores.utils,VECTORSTORE
97,embeddings,EMBEDDING
98,embeddings.embeddings,EMBEDDING
99,embeddings.fake,EMBEDDING
100,tools,TOOL
101,tools.base,TOOL
102,tools.convert,TOOL
103,tools.render,TOOL
104,tools.retriever,TOOL
105,tools.simple,TOOL
106,tools.structured,TOOL
107,agents,AGENT
108,output_parsers,PARSER
109,output_parsers.base,PARSER
110,output_parsers.format_instructions,PARSER
111,output_parsers.json,PARSER
112,output_parsers.list,PARSER
113,output_parsers.openai_functions,PARSER
114,output_parsers.openai_tools,PARSER
115,output_parsers.pydantic,PARSER
116,output_parsers.string,PARSER
117,output_parsers.transform,PARSER
118,output_parsers.xml,PARSER
119,callbacks,CALLBACK
120,callbacks.base,CALLBACK
121,callbacks.file,CALLBACK
122,callbacks.manager,CALLBACK
123,callbacks.stdout,CALLBACK
124,callbacks.streaming_stdout,CALLBACK
125,callbacks.usage,CALLBACK
126,tracers,TRACER
127,tracers._compat,TRACER
128,tracers._streaming,TRACER
129,tracers.base,TRACER
130,tracers.context,TRACER
131,tracers.core,TRACER
132,tracers.evaluation,TRACER
133,tracers.event_stream,TRACER
134,tracers.langchain,TRACER
135,tracers.log_stream,TRACER
136,tracers.memory_stream,TRACER
137,tracers.root_listeners,TRACER
138,tracers.run_collector,TRACER
139,tracers.schemas,TRACER
140,tracers.stdout,TRACER
141,indexing,INDEXING
142,indexing.api,INDEXING
143,indexing.base,INDEXING
144,indexing.in_memory,INDEXING
145,load,LOAD
146,load._validation,LOAD
147,load.dump,LOAD
148,load.load,LOAD
149,load.mapping,LOAD
150,load.serializable,LOAD
151,load.validators,LOAD
152,utils,UTIL
153,utils._merge,UTIL
154,utils.aiter,UTIL
155,utils.env,UTIL
156,utils.formatting,UTIL
157,utils.function_calling,UTIL
158,utils.html,UTIL
159,utils.image,UTIL
160,utils.input,UTIL
161,utils.interactive_env,UTIL
162,utils.iter,UTIL
163,utils.json,UTIL
164,utils.json_schema,UTIL
165,utils.mustache,UTIL
166,utils.pydantic,UTIL
167,utils.strings,UTIL
168,utils.usage,UTIL
169,utils.utils,UTIL
170,utils.uuid,UTIL
171,_api,INTERNAL
172,_api.beta_decorator,INTERNAL
173,_api.deprecation,INTERNAL
174,_api.internal,INTERNAL
175,_api.path,INTERNAL
176,_security,INTERNAL
177,_security._exceptions,INTERNAL
178,_security._policy,INTERNAL
179,_security._ssrf_protection,INTERNAL
180,_security._transport,INTERNAL
```

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