vercel/ai ai@6.0.0

on GitHub

Major Changes

• dee8b05: ai SDK 6 beta

Minor Changes

• 78928cb: release: start 5.1 beta

Patch Changes

• 0c3b58b: fix(provider): add specificationVersion to ProviderV3

• 58920e0: fix(ai): do not drop custom headers in HttpChatTransport

• a7da2b6: feat(agent): change output generics

• 0adc679: feat(provider): shared spec v3

• 50b70d6: feat(anthropic): add programmatic tool calling

• 2d28066: chore(agent): limit agent call parameters

• fca786b: feat(agent): configurable call options

• 046aa3b: feat(provider): speech model v3 spec

• e1f6e8e: feat(ai): add Output.json()

• 8d9e8ad: chore(provider): remove generics from EmbeddingModelV3

  Before

  model.textEmbeddingModel('my-model-id');

  After

  model.embeddingModel('my-model-id');

• b67d224: Fixes an issue where providerMetadata and providerExecuted were lost when tool input validation failed

• ab6f01a: Improve ai gateway error message when api key is not present

• 9388ff1: feat(ui): add isDataUIPart helper

• dce03c4: feat: tool input examples

• 2625a04: feat(openai); update spec for mcp approval

• 37c58a0: This release introduces wrapEmbeddingModel, a new helper that brings embedding model customization capabilities similar to wrapLanguageModel.

• 4e2b04d: fix(gateway): throw error with user-friendly message in non-production environments if AI_GATEWAY_API_KEY is not configured

• ab1087b: feat(ai): chat.addToolResult() is now chat.addToolOutput()

• bb10a89: fix(ai): mcp errors to be jsonrpc 2.0 compliant

• 457f1c6: feat(ai): onFinish callback for generateText

• 95f65c2: chore: use import * from zod/v4

• 754df61: fix(ai): correct type field in arrayOutputStrategy from 'enum' to 'array'

• 58920e0: refactor: consolidate header normalization across packages, remove duplicates, preserve custom headers

• 954c356: feat(openai): allow custom names for provider-defined tools

• 7fdd89d: feat(agent): export AgentCallParameters and AgentStreamParameters types

• eca63f3: feat(ai): add OAuth for MCP clients + refactor to new package

  This change replaces

  import { experimental_createMCPClient } from 'ai';
  import { Experimental_StdioMCPTransport } from 'ai/mcp-stdio';

  with

  import { experimental_createMCPClient } from '@ai-sdk/mcp';
  import { Experimental_StdioMCPTransport } from '@ai-sdk/mcp/mcp-stdio';

• 90e5bdd: chore(ai): restructure agent files

• 42cf7ed: fix(agent): use tool.toModelOutput when available

• 544d4e8: chore(specification): rename v3 provider defined tool to provider tool

• 4812235: fix(ai): add missing export for LoadSettingError

• 7f2c9b6: fix(ui): do not submit automatically when server return with error

• 614599a: chore(ai): deprecate generateObject and streamObject

• 0c4822d: feat: EmbeddingModelV3

• e062079: chore(agent): move Agent.respond into createAgentStreamResponse function

• 2b49dae: feat(agent): support UIMessageStreamOptions in createAgentStreamResponse

• ee651d7: https://v6.ai-sdk.dev -> https://ai-sdk.dev

• 5a4e732: Export parseJsonEventStream and uiMessageChunkSchema from "ai" package

• f733285: fix(ai): only parse experimental_output in generateText when finishReason is stop

• 9b83947: feat(ai): add convertDataPart option to convertToModelMessages

  Add optional convertDataPart callback for converting custom data parts (URLs, code files, etc.) to text or file parts that models can process. Fully type-safe using existing UIMessage generics.

• 7eca093: fix(ai): update uiMessageChunkSchema to satisfy the UIMessageChunk type

• 077aea3: feat(ai): stable structured output on generateText, streamText, and ToolLoopAgent

• 9f20c87: chore: updated README

• 521c537: feat(ai): Tool.needsApproval can be a function

• 7169511: feat(agent): support context in onFinish callback

• e8109d3: feat: tool execution approval

• 03849b0: move DelayedPromise into provider utils

• ed329cb: feat: Provider-V3

• 22ef5c6: feat(ai): Output.text() is default output mode

• 9ba4324: feat(ai): support SystemModelMessage[] in system and instructions properties

• 3bd2689: feat: extended token usage

• 293a6b7: Added a title to the tools

• 7c3c216: fixed docs and exported NoSpeechGeneratedError

• c62ecf0: feat(ai): add support for v2 specs in transcription and speech models

• d1bdadb: Added experimental_rerank support

• 703459a: feat: tool execution approval for dynamic tools

• 3071620: fix header loss when statusText is undefined in writeHead

• 7e4649f: fix(core): Fix image download behavior when the initial model is swapped out during prepareStep

• 48454ab: fix(ai): handle backpressure in writeToServerResponse

• e06b663: feat(agent): support experimental stream transforms

• 83e5744: feat: support async Tool.toModelOutput

• 8c98371: Extend addToolResult to support error results

• b1405bf: feat(ai): send context into streamText / generateText onFinish callbacks

• a5e152d: fix(ai): back version support for V2 providers

• aa0515c: feat(ai): move Agent to stable

• f6f0c5a: chore: remove zod from ui packages

• 3ed5519: chore: rename ToolCallOptions to ToolExecutionOptions

• eb8d1cb: fix not catching of empty arrays in validateUIMessage

• e7d9b00: feat(agent): add optional name property to agent

• d5b25ee: feat(ai): add Output.array()

• d7bae86: feat(ai): add Output.choice()

• 8dac895: feat: LanguageModelV3

• a755db5: feat(ai): improve warnings with provider and model id

• 1c2a4c1: fix(ai): remove outdated jsdoc param descriptions

• 686103c: chore(ai): export ContentPart type

• 0d6c0d8: chore(ai): remove deprecated CodeMessage type and related types and functions

• 9b8d17e: fix(agent): move provider options to main agent config

• 79a8e7f: feat(agent): support abortSignal in createAgentUIStream

• d59ce25: fix(ai): do not mutate middleware array argument when wrapping

• 475189e: chore(specification): rename EmbeddingModelCallOptions

• 3d83f38: chore(ai): improve addToolInputExamplesMiddleware

• 457318b: chore(provider,ai): switch to SharedV3Warning and unified warnings

• b681d7d: feat: expose usage tokens for 'generateImage' function

• c99da05: feat(ai): add onFinish to Agent

• db913bd: fix(google): add thought signature to gemini 3 pro image parts

• 9061dc0: feat: image editing

• 8445d70: feat: export GatewayModelId and use to type LanguageModel

• 32223c8: feat: add toolCallId arg to toModelOutput

• 8370068: fix(provider/google): preserve thoughtSignature through tool execution

• 5e313e3: fix(agent): do not allow static tools when tools is empty

• db62f7d: Added schema name and description for generateText and output

• a7f6f81: Add safeValidateUIMessages utility to validate UI messages without throwing, returning a success/failure result object like Zod’s safeParse

• 79ba99f: feat(agent): add message metadata support when inferring UI messages

• c98373a: chore(agent): rename createAgentStreamResponse to createAgentUIStreamResponse

• 846e80e: fix(ai): bind functions for v2 -> v3 adapter

• bbdcb81: Add experimental_context parameter to prepareStep callback

• 67a407c: chore(ai): add warning when using v2 models with AISDK v6

• 9524761: chore(ai): rename relevanceScore to score

• ca13d26: feat(ai): add output to StreamTextResult

• 4616b86: chore: update zod peer depenedency version

• a322efa: Added finishReason on useChat onFinish callbck

• 2d166e4: feat(provider/gateway): add support for image models

• 384142c: feat(agent): add abortSignal parameter to generate and stream

• 36b175c: chore(ai): change output generics

• 2b1bf9d: feat(ai): add pruneMessages helper function

• 81d4308: feat: provider-executed dynamic tools

• e0d1ea9: fix(ai): align logic of text-end with reasoning-end

• 2406576: chore(agent): rename messages property on agent ui stream functions to uiMessages

• b1aeea7: feat(ai): set default stopWhen on Agent to stepCountIs(20)

• dce4e7b: chore(agent): rename system to instructions

• 4ece5f9: feat(agent): add experimental_download to ToolLoopAgent

• a417a34: feat(agent): introduce version property

• 637eaa4: feat(ai): print model warnings in embed and embedMany

• 177b475: fix(ai): download files when intermediate file cannot be downloaded

• 21e20c0: feat(provider): transcription model v3 spec

• afe7093: feat: add middleware for tool input examples

• 61f7b0f: chore(agent): rename BasicAgent to ToolLoopAgent

• af9dab3: fix(ai): remove unused mode setting from generateObject and streamObject

• 522f6b8: feat: ImageModelV3

• 97b1d77: fix(ui): Don't resend messages for providerExecuted tools in lastAssistantMessageIsCompleteWithToolCalls and lastAssistantMessageIsCompleteWithApprovalResponses

• 69768c2: chore(ai): remove UI message reference from model message validation

• 27e8c3a: chore(ai): rename Agent to BasicAgent, introduce Agent interface

• 81e29ab: feat(ai): allow modifying experimental context in prepareStep

• 7da02d2: fix(ai): prune messages properly when toolCalls set to 'before-last-message'

• 763d04a: feat: Standard JSON Schema support

• 95b77e2: feat(agent): extract createAgentUIStream, add pipeAgentUIStreamToResponse

• 3794514: feat: flexible tool output content support

• cbf52cd: feat: expose raw finish reason

• 14ca35d: feat: add support for v2 specs

• 10c1322: fix: moved dependency @ai-sdk/test-server to devDependencies

• dcdac8c: chore(ai): rename tool helpers

• 960ec8f: chore: change argument of toModelOutput to parameter object

• b59d924: feat(ai): support SystemModelMessage in system and instructions properties

• 1bd7d32: feat: tool-specific strict mode

• 95f65c2: chore: load zod schemas lazily

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  • @ai-sdk/provider@3.0.0
  • @ai-sdk/gateway@2.0.0
  • @ai-sdk/provider-utils@4.0.0