Release 0.3.27

What's Changed

• Release 0.3.26 by @benjamincburns in #8185
• chore(mcp-adapters): migrate mcp-adapters package into LangChain monorepo by @benjamincburns in #8170
• feat!(weaviate): expose new features by updating weaviate client to v3.5.2 by @dee-at-weaviate in #8089
• fix(core, anthropic): handling for undefined tool outputs by @shawnzhu in #8141
• fix(openai): allow streaming o1 responses by @Stadly in #8175
• chore(genai): fix code sample in README by @nuhmanpk in #8214
• chore(community): fix docs typo in tavily_search_community by @postbird in #8199
• chore(docs): replace google analytics with google tag manager by @danielrlambert3 in #8174
• feat(aws): add performanceConfig by @benjamincburns in #8217
• chore(core): deprecate Runnable .bind, .map, and RunnableEach by @benjamincburns in #8187
• chore: stop using Runnable.bind by @benjamincburns in #8192
• fix(community): update ChromeAI to use the new window.LanguageModel by @jtpio in #8173
• release(weaviate): 0.2.0 by @benjamincburns in #8228
• feat(community): Return document ids when querying opensearch vector store by @lucassmatos in #8204
• release(community): 0.3.44 by @benjamincburns in #8229
• release(anthropic): 0.3.21 by @benjamincburns in #8230
• release(openai): 0.5.11 by @benjamincburns in #8231
• release(core): 0.3.57 by @benjamincburns in #8232

New Contributors

• @dee-at-weaviate made their first contribution in #8089
• @shawnzhu made their first contribution in #8141
• @nuhmanpk made their first contribution in #8214
• @postbird made their first contribution in #8199
• @danielrlambert3 made their first contribution in #8174
• @lucassmatos made their first contribution in #8204

Full Changelog: 0.3.26...0.3.27

Release 0.3.26

What's Changed

• Release 0.3.25 by @benjamincburns in #8169
• feat(utils/testing): add tool-call streaming support to FakeStreamingChatModel by @RUPOJS in #8112
• fix(community): mark Azure blob storage connection string as secrets by @sinedied in #8134
• fix(core): tracing perf improvements by @benjamincburns in #8176
• chore: bump smith version by @benjamincburns in #8180
• chore(core): deprecate RemoteRunnable by @benjamincburns in #8181
• fix(community): update generated secret map by @benjamincburns in #8182
• release(core): 0.3.56 by @benjamincburns in #8183
• release(community): 0.3.43 by @benjamincburns in #8184

Full Changelog: 0.3.25...0.3.26

0.3.25

What's Changed

• feat(core): implement standard content blocks by @benjamincburns in #8062
• release(core): 0.3.48 by @benjamincburns in #8067
• feat(openai): implement standard content blocks by @benjamincburns in #8065
• feat(anthropic): implement standard content blocks by @benjamincburns in #8063
• feat(aws): implement standard content blocks by @benjamincburns in #8066
• chore(google): bump dep on core by @benjamincburns in #8064
• release(anthropic): 0.3.19 by @benjamincburns in #8069
• release(aws): 0.1.9 by @benjamincburns in #8070
• release(openai): 0.5.7 by @benjamincburns in #8071
• release(google): 0.2.5 by @benjamincburns in #8072
• docs: Update Google Analytics tag in docs by @jacoblee93 in #8075
• fix(core): Prevent DictPromptTemplate serialization from getting minified by @jacoblee93 in #8076
• release(core): 0.3.49 by @jacoblee93 in #8077
• fix(range_tests): fix latest dep range test for @langchain/google-ver… by @benjamincburns in #8084
• feat(community): Add schema support for ensureTableInDatabase in typeorm vectorstore. by @n1md7 in #4504
• fix(langchain): improve output parsing in xml agent by @jmlon in #3975
• fix(community): export openapi util by @schipiga in #8037
• fix(langchain): fix react agent quote handling in JSON parsing by @EfrosIonelu in #7707
• chore(core) Document: add test checking pageContents empty string behavior by @skarard in #2836
• feat(tavily): use chunks per source arg by @anadi45 in #8081
• feat(core): support method field in StructuredPrompt by @henryweng03 in #6657
• feat(community): pgvector store: remove dependency with uuid-ossp extension by @jouir in #5014
• fix(community): Throw more descriptive errors for Ali toyi chat models by @sinajia in #5549
• fix(aws): Merge consecutive messages correctly in ChatBedrockConverse by @michaelnchin in #7978
• feat(openai): Response API support for reasoning summaries, stateful conversations, and Zero Data Retention by @benjamincburns in #8090
• release(core): 0.3.50 by @benjamincburns in #8095
• fix(langchain): fix broken langchain build by @benjamincburns in #8096
• release(openai): 0.5.8 by @benjamincburns in #8097
• release(community): 0.3.42 by @benjamincburns in #8098
• feat(core): allow JsonOutputParser to stream markdown JSON by @RUPOJS in #8091
• add google gemini by @philschmid in #8092
• fix(openai): Responses API - ensure consistent message ID between stream & invoke by @benjamincburns in #8104
• release(openai): 0.5.9 by @benjamincburns in #8105
• chore(openai): fix test by @benjamincburns in #8106
• fix(openai): Responses API: fix function call ID handling on stream by @benjamincburns in #8107
• release(openai): 0.5.10 by @benjamincburns in #8108
• feat(anthropic): standard input blocks and better handling of image_url and anthropic image content blocks by @benjamincburns in #8109
• release(anthropic): 0.3.20 by @benjamincburns in #8110
• release(core): 0.3.51 by @benjamincburns in #8111
• chore(aws): fix test by @benjamincburns in #8120
• fix(google-common): stream warnings by @afirstenberg in #8116
• fix(google-common): Default AI Studio ("gai") platform to use "v1beta" API Version by @afirstenberg in #8117
• fix(tavily): Fix unit tests by @abogacki in #8118
• chore(aws): fix test by @benjamincburns in #8121
• fix(openapi): add global flag to replaceAll in getCleanedOperationId by @typeofalex in #8113
• fix(core): fix isStructuredToolParams type guard to allow JSONSchema by @benjamincburns in #8122
• release(google): 0.2.6 by @benjamincburns in #8125
• fix(google-common): don't set includeThoughts by @iltenahmet in #8123
• fix(core): Infer tool return types, with related tool type fixes by @hntrl in #8056
• release(core): 0.3.54 by @benjamincburns in #8129
• feat(google-common), feat(core): Improve token counting by @afirstenberg in #8128
• fix(core): fix type of Runnable.withConfig's argument by @benjamincburns in #8137
• release(core): 0.3.55 by @benjamincburns in #8138
• Release by @benjamincburns in #8139
• fix(gemini-common): Allow reasoning to be turned off by setting maxReasoningTokens to 0. by @afirstenberg in #8147
• fix(aws): handle image_url object format in block type extraction by @caro-cc in #8143
• Release by @benjamincburns in #8155
• fix(google-genai): handle tool_calls when the message contains other content by @andantonyan in #8005
• feat(google): Assorted updates and tests from recent announcements by @afirstenberg in #8163
• fix(google): Using .nullish() in zod. by @afirstenberg in #8164
• fix(langchain): vertex ai model name pulled from hub by @anadi45 in #8159
• test(mongodb): Add tooling to use local Atlas for tests by @baileympearson in #8154
• release(google): 0.2.9 by @benjamincburns in #8167
• release(aws): 0.1.10 by @benjamincburns in #8168

New Contributors

• @n1md7 made their first contribution in #4504
• @jmlon made their first contribution in #3975
• @EfrosIonelu made their first contribution in #7707
• @jouir made their first contribution in #5014
• @michaelnchin made their first contribution in #7978
• @RUPOJS made their first contribution in #8091
• @philschmid made their first contribution in #8092
• @typeofalex made their first contribution in #8113
• @iltenahmet made their first contribution in #8123
• @hntrl made their first contribution in #8056
• @caro-cc made their first contribution in #8143
• @andantonyan made their first contribution in #8005

Full Changelog: 0.3.24...0.3.25

Release 0.3.24

What's Changed

• Implement DictPromptTemplate by @nfcampos in #8043
• release(core): 0.3.46 by @benjamincburns in #8052
• fix(tavily): convert search/extract API parameters to snake_case in request body by @abogacki in #8048
• feat(google-common): Gemini 2.5 flash by @afirstenberg in #8051
• feat(core): Add input_variables to serialized representation of DictPromptTemplate by @jacoblee93 in #8055
• release(core): 0.3.47 by @jacoblee93 in #8057
• fix(langchain): Expose _ConfigurableModel in exports by @bracesproul in #8053
• release(langchain): 0.3.24 by @bracesproul in #8059

New Contributors

• @abogacki made their first contribution in #8048

Full Changelog: 0.3.23...0.3.24

Release 0.3.23

What's Changed

• Release 0.3.22 by @jacoblee93 in #8036
• o4 reasoning model support (#8039) by @dudebot in #8040
• release(openai): 0.5.6 by @bracesproul in #8044
• release(langchain): 0.3.23 by @bracesproul in #8045

New Contributors

• @dudebot made their first contribution in #8040

Full Changelog: 0.3.22...0.3.23

langchain==0.3.22

What's Changed

• Release 0.3.21 by @benjamincburns in #7996
• fix(groq): update to latest sdk, format fixes, maintenance by @benjamincburns in #8008
• release(groq): 0.2.2 by @benjamincburns in #8009
• chore(docs): update link to JS JD by @benjamincburns in #8013
• chore(docs): bump nextjs version by @benjamincburns in #8014
• chore: bump release-it version by @benjamincburns in #8015
• chore(community): bump usearch package version by @benjamincburns in #8016
• chore: dedupe yarn.lock, plus required minor code edits by @benjamincburns in #8017
• chore: bump next dep in environment tests by @benjamincburns in #8018
• chore(openai, baidu-qianfan, deepseek, xai): use latest openai SDK & @langchain/openai package by @benjamincburns in #8019
• fix: LangChain tracer should send session name with update requests by @angus-langchain in #8021
• fix: don't drop tool input when converting messages to Anthropic payload by @sd2k in #8025
• release(anthropic): 0.3.18 by @jacoblee93 in #8027
• fix(google-common): Fix warning about system message in Vertex Anthropic by @afirstenberg in #8022
• docs: add GOAT to tool docs by @0xaguspunk in #7906
• feat(community): make convertOpenAPISpecToOpenAIFunctions available for imports by @schipiga in #7955
• fix(langchain): Fix typo in error message for SqlDatabase options by @timler in #7975
• fix(google-genai): Add support for supervisor author name by @sklinkert in #7980
• fix(ci): Remove caching for LangChain CI action by @jacoblee93 in #8028
• docs: Fix urls, remove outdate info in IBM Toolkit by @FilipZmijewski in #7969
• fix(docs): fix parameter casing for useResponsesAPI -> useResponsesApi by @24601 in #8026
• feat(langchain-tavily): creating and implementing the Tavily Partner package for the js library by @michaelgriff in #7957
• release(tavily): 0.1.0 by @benjamincburns in #8029
• chore(tavily): add README.md by @benjamincburns in #8030
• release(tavily): 0.1.1 by @benjamincburns in #8031
• fix(docs): fix broken API ref link, use better link for LangGraph tool calling by @benjamincburns in #8032
• fix(community): perplexity add search domain & recency filter by @anadi45 in #7999
• fix(langchain): Remove extra }} from structured output format instructions by @lx-0 in #8024
• test(google): Gemini 2.5 on Vertex by @afirstenberg in #7927
• docs(community): removed @param tag for non-existent function parameter by @alexTayanovsky in #7997
• release(community): 0.3.41 by @jacoblee93 in #8033
• release(google-genai): 0.2.4 by @jacoblee93 in #8034
• release(core): 0.3.45 by @jacoblee93 in #8035
• Release 0.3.22 by @jacoblee93 in #8036

New Contributors

• @angus-langchain made their first contribution in #8021
• @sd2k made their first contribution in #8025
• @0xaguspunk made their first contribution in #7906
• @schipiga made their first contribution in #7955
• @timler made their first contribution in #7975
• @sklinkert made their first contribution in #7980
• @24601 made their first contribution in #8026
• @michaelgriff made their first contribution in #7957
• @lx-0 made their first contribution in #8024
• @alexTayanovsky made their first contribution in #7997

Full Changelog: 0.3.21...langchain==0.3.22

Release 0.3.21

What's Changed

• Release 0.3.20 by @jacoblee93 in #7958
• fix(openai): ensure that we're not sending stream: true even if streaming is not being done by @dqbd in #7959
• release(openai): 0.5.3 by @dqbd in #7965
• fix(openai): handle system, developer messages by @dqbd in #7966
• release(openai): 0.5.4 by @dqbd in #7967
• fix(docs): fix a typo by @tperelle in #7962
• docs: expand descriptions in llms.txt by @eyurtsev in #7971
• fix(ci): Remove unused debug action by @jacoblee93 in #7976
• docs: fix typo in structured output guide by @zdpk in #7964
• docs: reflect changes in SQL QA prompt by @ccurme in #7985
• chore(docs): update banner to point at JS job listing by @benjamincburns in #7988
• feat: allow defining LangChain-style tools with JSONSchema by @benjamincburns in #7973
• release(core): 0.3.44 by @benjamincburns in #7989
• release(anthropic): 0.3.17 by @benjamincburns in #7990
• release(openai): 0.5.5 by @benjamincburns in #7991
• release(aws): 0.1.8 by @benjamincburns in #7992
• release(cohere): 0.3.3 by @benjamincburns in #7993
• release(google) by @benjamincburns in #7994
• release(community): 0.3.40 by @benjamincburns in #7995

New Contributors

• @tperelle made their first contribution in #7962
• @zdpk made their first contribution in #7964

Full Changelog: 0.3.20...0.3.21

Release 0.3.20

What's Changed

• feat(community,aws): Update @aws-sdk/* dependencies in langchain-aws by @KDKHD in #7710
• fix(core): Fix issue in .d.ts typing for TextEncoder by @danielkatz in #7726
• fix(google-genai): Support larger range of temperatures for Gemini models by @afirstenberg in #7703
• release(aws): 0.1.4 by @jacoblee93 in #7728
• fix(google-common): Eliminate hard-coded default values in favor of model-based defaults by @afirstenberg in #7704
• feat (google-*): Support Google Cloud Express Mode by @afirstenberg in #7676
• minor(google-gauth): Upgrade google-auth-library to latest major version by @afirstenberg in #7729
• fix(google-common): Handle multiple function calls and complex parts/generations by @afirstenberg in #7706
• feat(community): Add support for Amazon Aurora DSQL memory message by @jl4nz in #7635
• release(community): 0.3.32 by @jacoblee93 in #7730
• release(google-vertex): 0.2.0 by @jacoblee93 in #7731
• docs: Fix broken link by @jacoblee93 in #7743
• release(google-genai): Release 0.1.9 by @jacoblee93 in #7748
• feat(anthropic): Support claude 3.7 sonnet & extended thinking by @benjamincburns in #7750
• release(anthropic): 0.3.14 by @benjamincburns in #7751
• fix(pinecone): Update Pinecone SDK to 5.0.0, make peer dep by @jacoblee93 in #7767
• release(pinecone): 0.2.0 by @jacoblee93 in #7772
• docs: Adds missing redirect by @jacoblee93 in #7759
• fix(core): don't create empty text content blocks by @benjamincburns in #7769
• fix(community): usage error returned by Zhipuai streaming data was missing tokens-related information by @mmdapl in #7745
• fix(core): Skip delete operation if not necessary during incremental index by @weakit in #7734
• fix(google-genai): Fix Google Genai usage token by @beowulf11 in #7733
• fix(core): add artifact to ToolMessage and ToolMessageChunk for RemoteRunnable by @acastells in #7763
• fix(deepseek): wrong home link for @langchain/deepseek by @AllenFang in #7754
• release(google-genai): 0.1.10 by @jacoblee93 in #7773
• release(core): 0.3.41 by @jacoblee93 in #7774
• feat(community): Support google cloud storage document loader by @AllenFang in #7740
• release(community): 0.3.33 by @jacoblee93 in #7775
• feat(aws): support reasoning blocks for claude 3.7 by @benjamincburns in #7768
• release(aws): 0.1.5 by @benjamincburns in #7777
• fix(core): Adds fallback for context vars by @jacoblee93 in #7776
• release(core): 0.3.42 by @jacoblee93 in #7783
• fix(anthropic): Log warning if withStructuredOutput is used with thinking models by @jacoblee93 in #7782
• release(anthropic): 0.3.15 by @jacoblee93 in #7784
• fix(aws): fix content block ordering for claude reasoning on bedrock by @benjamincburns in #7785
• release(aws): 0.1.6 by @benjamincburns in #7786
• tests(google-vertex,webauth): Verify code works with gemini-2.0-flash-lite-001 by @afirstenberg in #7794
• Google oauth support for Google calender tool by @deepu105 in #7788
• Google oauth support + fix tools for API v1 by @deepu105 in #7780
• release(community): 0.3.34 by @benjamincburns in #7796
• feat (google-common,vertex,etc): Support Claude 3.7 Thinking via Vertex AI by @afirstenberg in #7793
• release(google-common): 0.2.1 by @benjamincburns in #7799
• release(google-vertexai): 0.2.1 by @benjamincburns in #7800
• release(google-vertexai-web): 0.2.1 by @benjamincburns in #7801
• chore(google-gauth, google-webauth): bump dep version on google-common by @benjamincburns in #7803
• release(google-gauth): 0.2.1 by @benjamincburns in #7804
• release(google-webauth): 0.2.1 by @benjamincburns in #7805
• docs: Fix typos by @rkulyassa in #7823
• fix(aws): fix bedrockRuntimeClinent to refer to endpointHost value by @m-hamaro in #7797
• feature(community): Enable using chat and llms without providing project/space/development id (lightweight engine IBM) by @FilipZmijewski in #7781
• feat(google-common): Add tokenUsage to llmOutput of google-genai by @Liboul in #7806
• docs: broken link in chat models page by @plapinski in #7816
• fix(community): Optional google cloud storage options for GCS doc loader by @AllenFang in #7791
• fix(azure-cosmosdb): Update user agent of AzureCosmosDBMongoDBVectorStore by @fatmelon in #7825
• fix(aws): fix Invalid reasoning content exception on empty reasoning chunk by @ChenNima in #7826
• chore(langchain): add test to ensure sort order on MemoryVectorStore by @benjamincburns in #7792
• release(aws): 0.1.7 by @jacoblee93 in #7836
• release(google): 0.2.2 by @jacoblee93 in #7837
• fix(community): adding structured output parser for Google Calendar by @John2360 in #7789
• release(community): 0.3.35 by @jacoblee93 in #7838
• release(google-genai): 0.1.11 by @jacoblee93 in #7841
• feat(community): add deepseek to allowed bedrock models by @jarib in #7842
• Update sequence.ipynb by @technopahadi in #7847
• feat(community): MariaDB vector store implementation. by @rusher in #7360
• feat(community): Permit bedrock application inference profiles by @bioshazard in #7822
• feat(community): Perplexity integration by @anadi45 in #7817
• release(community): 0.3.36 by @jacoblee93 in #7858
• fix(openai): Fix OpenAI type error by @jacoblee93 in #7857
• release(openai): 0.4.5 by @jacoblee93 in #7859
• fix: Update groq default model by @bracesproul in #7802
• release(groq): 0.2.0 by @bracesproul in #7864
• feat[openai]: responses API by @dqbd in #7831
• release(openai): 0.4.6 by @dqbd in #7869
• fix(openai): Dont populate id field for computer call outputs by @bracesproul in #7871
• release(openai): 0.4.7 by @bracesproul in #7873
• fix(community): Azure AI Search - similaritySearch return description is incorrect by @diberry in #7867
• Revert "fix(azure-cosmosdb): Update user agent of AzureCosmosDBMongoDBVectorStore" by @fatmelon in #7861
• fix(core): Add typing in ChatMessagePromptTemplate.fromTemplate by @gouroujo in #7874
• feat(google-common): Gemma 3 support for AI Studio by @afirstenberg in #7851
• release(azure-cosmosdb): 0.2.8 by @jacoblee93 in #7881
• feat(google-genai): Bump GenAI SDK version by @jacoblee93 in https://github.com/langchain-ai/langch...

Release 0.3.19

What's Changed

• Release 0.3.18 by @jacoblee93 in #7720
• feat(xai): xAI polish by @jacoblee93 in #7722
• feat(langchain): Adds xAI to initChatModel by @jacoblee93 in #7721
• release(xai): 0.0.2 by @bracesproul in #7723
• release(langchain): 0.3.19 by @bracesproul in #7724

Full Changelog: 0.3.18...0.3.19

Release 0.3.18

What's Changed

• Release 0.3.17 by @jacoblee93 in #7715
• docs: Fix the broken link by @toqeer-hussain in #7699
• fix(langchain): Respect split model name for initChatModel by @jacoblee93 in #7716
• fix: typo in the chatbot tutorial by @vedantmishra69 in #7693
• fix(ci): Fix Vercel build by @jacoblee93 in #7717
• fix(community): Fix handling of ChromeAI chunks by @jtpio in #7700
• fix(redis): Add TTL support for redis vector store by @AllenFang in #7695
• fix(redis): update wrong redis setup link by @AllenFang in #7698
• feat(community): Update Voyage embeddings parameters by @nicolas-geysse in #7689
• release(redis): 0.1.1 by @jacoblee93 in #7718
• release(community): 0.3.31 by @jacoblee93 in #7719

New Contributors

• @toqeer-hussain made their first contribution in #7699
• @vedantmishra69 made their first contribution in #7693
• @jtpio made their first contribution in #7700
• @AllenFang made their first contribution in #7695

Full Changelog: 0.3.17...0.3.18