LangChain for Java Files

Notable Changes

• AI Services:
• Support polymorphic return types and tool parameters by @dliubarskyi in https://github.com/langchain4j/langchain4j/pull/5060
• Add ReturnBehavior.IMMEDIATE_IF_LAST by @dliubarskyi in https://github.com/langchain4j/langchain4j/pull/4998
• OpenAI Responses API:
• Refactor OpenAI Responses API integrations (follow up on PR 3816) by @maxlepikhin in https://github.com/langchain4j/langchain4j/pull/4557
• Add non-streaming OpenAI Responses chat model by @jrsperry in https://github.com/langchain4j/langchain4j/pull/4784
• OpenAI Responses API: Support reasoning summaries and encrypted reasoning by @dliubarskyi in https://github.com/langchain4j/langchain4j/pull/4948
• OpenAI Responses API (Official): implement OpenAiOfficialResponsesChatModel + reasoning summaries + encrypted reasoning by @dliubarskyi in https://github.com/langchain4j/langchain4j/pull/4954

Other Changes

• feat(gemini): support imageConfig (aspectRatio/imageSize) in GoogleAiGeminiChatModel by @ZhangDT-sky in https://github.com/langchain4j/langchain4j/pull/4891
• Fix: Prevent dropped tool calls in OpenAI streaming response by @VasilijeJukic01 in https://github.com/langchain4j/langchain4j/pull/4890
• feat(ollama): add support for dimensions in embedding request payload by @harikrishna553 in https://github.com/langchain4j/langchain4j/pull/4880
• feat(openai): add support for logprobs and top_logprobs by @ss-bhatt in https://github.com/langchain4j/langchain4j/pull/4306
• fix: make DateOutputParser thread-safe by using DateTimeFormatter by @iaJingda in https://github.com/langchain4j/langchain4j/pull/4902
• Allow multiple McpClientListeners by @jmartisk in https://github.com/langchain4j/langchain4j/pull/4905
• Add automated API backward compatibility checks with Revapi by @dliubarskyi in https://github.com/langchain4j/langchain4j/pull/4908
• Allows to configure subagents also as a Collection by @mariofusco in https://github.com/langchain4j/langchain4j/pull/4916
• fix cache resource list flag by @eye-gu in https://github.com/langchain4j/langchain4j/pull/4927
• Add MCP tool result extractor by @leochame in https://github.com/langchain4j/langchain4j/pull/4915
• configure Reproducible Builds by @hboutemy in https://github.com/langchain4j/langchain4j/pull/4912
• Bump follow-redirects from 1.15.11 to 1.16.0 in /docs by @dependabot[bot] in https://github.com/langchain4j/langchain4j/pull/4919
• issue [#4893] - Introduce executionContext to AgenticScope by @ricardozanini in https://github.com/langchain4j/langchain4j/pull/4923
• Ignore changes in internal code when checking backward compatibility using the revapi plugin by @mariofusco in https://github.com/langchain4j/langchain4j/pull/4932
• Expose cached content and thoughts token counts in Gemini token usage by @mcopes73 in https://github.com/langchain4j/langchain4j/pull/4930
• Bump dompurify from 3.3.3 to 3.4.0 in /docs by @dependabot[bot] in https://github.com/langchain4j/langchain4j/pull/4941
• fix: use skipMain/skip instead of phase=none in maven-compiler-plugin to fix Eclipse/VSCode Java version detection by @iaJingda in https://github.com/langchain4j/langchain4j/pull/4894
• feat(google-ai-gemini): add VALIDATED function calling mode by @dskarzh in https://github.com/langchain4j/langchain4j/pull/4829
• build(deps): bump org.bouncycastle:bcprov-jdk18on from 1.81 to 1.84 in /langchain4j-easy-rag by @dependabot[bot] in https://github.com/langchain4j/langchain4j/pull/4958
• feat(bedrock): add CacheTTL support for prompt caching by @dahaejung-29cm in https://github.com/langchain4j/langchain4j/pull/4920
• (docs) Adding documentation for Cohere chat model integration by @diegoberriosr in https://github.com/langchain4j/langchain4j/pull/4964
• Check that an untyped agent has all the required arguments before invoking it by @mariofusco in https://github.com/langchain4j/langchain4j/pull/4956
• feat: Mistal AI AudioContent support by @diegoberriosr in https://github.com/langchain4j/langchain4j/pull/4978
• Assume no arguments for untyped agents not explicitly declaring them by @mariofusco in https://github.com/langchain4j/langchain4j/pull/4979
• feat: add numThread support to OllamaChatRequestParameters by @suryateja-g13 in https://github.com/langchain4j/langchain4j/pull/4969
• OpenAI: added missing support for PDF files to official and unofficial Chat Completions and Responses API by @jrsperry in https://github.com/langchain4j/langchain4j/pull/4768
• fix: deserialize JSON strings to custom objects in agentic scope (#4897) by @suryateja-g13 in https://github.com/langchain4j/langchain4j/pull/4976
• Retrive and use the actual types of arguments for typed A2A agents by @mariofusco in https://github.com/langchain4j/langchain4j/pull/4999
• spelling by @sahalhes in https://github.com/langchain4j/langchain4j/pull/5002
• OpenAI Official Responses: add server tools support by @leochame in https://github.com/langchain4j/langchain4j/pull/4955
• feat(anthropic): add thinkingDisplay option to control thinking visibility by @unsignedint in https://github.com/langchain4j/langchain4j/pull/4950
• feat: Support PdfFileContent for Mistral by @diegoberriosr in https://github.com/langchain4j/langchain4j/pull/5014
• feat(ollama): expand supported options in OllamaChatRequestParameters by @giveup in https://github.com/langchain4j/langchain4j/pull/4997
• PgVector: parenthesize isNotIn/isNotEqualTo to fix AND/OR precedence (#2513) by @zxuhan in https://github.com/langchain4j/langchain4j/pull/5004
• MCP: expose session id on StreamableHttpMcpTransport (#4757) by @zxuhan in https://github.com/langchain4j/langchain4j/pull/5003
• feat: Update OVH AI to use OpenAI provider by @philippart-s in https://github.com/langchain4j/langchain4j/pull/5016
• Support additional event types in McpClientListener by @jmartisk in https://github.com/langchain4j/langchain4j/pull/5042
• Fix SupervisorAgent custom object parameter support by @mariofusco in https://github.com/langchain4j/langchain4j/pull/5047
• Fix: NPE when using GOAP with an AgenticScope containing variables not used in the execution graph (#4986) by @elin-coursera2 in https://github.com/langchain4j/langchain4j/pull/4987
• Fire agent invocation events also when invoking an agent in isolation by @mariofusco in https://github.com/langchain4j/langchain4j/pull/5054
• Zhipu AI: Update docs about reasoning and partial tool call by @Martin7-1 in https://github.com/langchain4j/langchain4j/pull/5055
• Chroma: support custom HTTP client builder and headers by @DragonFSKY in https://github.com/langchain4j/langchain4j/pull/5040
• fix: add null/empty choices guard in OpenAiChatModel and aiMessageFrom by @farzad-sedaghatbin in https://github.com/langchain4j/langchain4j/pull/4813
• MCP: label stderr logs as STDERR by @DragonFSKY in https://github.com/langchain4j/langchain4j/pull/5031
• fix: expose Bedrock Cohere embedding token usage by @DragonFSKY in https://github.com/langchain4j/langchain4j/pull/5064
• build(deps): bump org.apache.httpcomponents.client5:httpclient5 from 5.6 to 5.6.1 in /http-clients/langchain4j-http-client-apache by @dependabot[bot] in https://github.com/langchain4j/langchain4j/pull/5061
• Allow to independently generate the html reports of topology and execution of an agentic system by @mariofusco in https://github.com/langchain4j/langchain4j/pull/5068
• Allow ClassPathSkillLoader to load skills packaged in JAR files by @jmartisk in https://github.com/langchain4j/langchain4j/pull/5066

New Contributors

• @eye-gu made their first contribution in https://github.com/langchain4j/langchain4j/pull/4927
• @leochame made their first contribution in https://github.com/langchain4j/langchain4j/pull/4915
• @mcopes73 made their first contribution in https://github.com/langchain4j/langchain4j/pull/4930
• @dahaejung-29cm made their first contribution in https://github.com/langchain4j/langchain4j/pull/4920
• @suryateja-g13 made their first contribution in https://github.com/langchain4j/langchain4j/pull/4969
• @sahalhes made their first contribution in https://github.com/langchain4j/langchain4j/pull/5002
• @unsignedint made their first contribution in https://github.com/langchain4j/langchain4j/pull/4950
• @giveup made their first contribution in https://github.com/langchain4j/langchain4j/pull/4997
• @zxuhan made their first contribution in https://github.com/langchain4j/langchain4j/pull/5004
• @elin-coursera2 made their first contribution in https://github.com/langchain4j/langchain4j/pull/4987

Full Changelog: https://github.com/langchain4j/langchain4j/compare/1.13.0...1.14.0