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O(N²) parse time in @ai-sdk/mcp on large MCP tool responses (fix in rexxars/eventsource-parser#28)

ai/mcprelated to `@ai-sdk/mcp` packagerelated to `@ai-sdk/mcp` package

bugSomething isn't working as documentedSomething isn't working as documented

reproduction provided

support

Status: Open.

#14619 In vercel/ai;

· emoralesb05 opened on Apr 18, 2026

WorkflowChatTransport: expose lifecycle/reconnect controls instead of forcing consumers to forge finish chunks

ai/workflowrelated to WorkflowAgent or Vercel Workflow DevKit in general (useworkflow.dev)related to WorkflowAgent or Vercel Workflow DevKit in general (useworkflow.dev)

featureNew feature or requestNew feature or request

Status: Open.

#14617 In vercel/ai;

· gr2m opened on Apr 17, 2026

·  

v7.0

Bug: tool-only assistant messages send content:"" in xai, deepseek, groq, mistral providers

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/deepseekIssues related to the @ai-sdk/deepseek providerIssues related to the @ai-sdk/deepseek provider

provider/groqIssues related to the @ai-sdk/groq providerIssues related to the @ai-sdk/groq provider

provider/mistralIssues related to the @ai-sdk/mistral providerIssues related to the @ai-sdk/mistral provider

provider/xaiIssues related to the @ai-sdk/xai providerIssues related to the @ai-sdk/xai provider

reproduction provided

Status: Open.

#14612 In vercel/ai;

· gr2m opened on Apr 17, 2026

GatewayProviderOptions type missing 'caching' property (docs mismatch)

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/gatewayIssues related to the @ai-sdk/gateway providerIssues related to the @ai-sdk/gateway provider

reproduction provided

support

Status: Open.

#14595 In vercel/ai;

· rossanodr opened on Apr 17, 2026

streamText with tools fails against GitHub Copilot API via @ai-sdk/openai-compatible

ai/corecore functions like generateText, streamText, etc. Provider utils, and provider spec.core functions like generateText, streamText, etc. Provider utils, and provider spec.

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/openai-compatibleIssues related to the @ai-sdk/openai-compatible providerIssues related to the @ai-sdk/openai-compatible provider

reproduction provided

Status: Open.

#14568 In vercel/ai;

· venkat22 opened on Apr 16, 2026

streamText response stops mid-generation when used with tool calls and maxSteps > 1 in Node.js streaming context

ai/corecore functions like generateText, streamText, etc. Provider utils, and provider spec.core functions like generateText, streamText, etc. Provider utils, and provider spec.

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/openaiIssues related to the @ai-sdk/openai providerIssues related to the @ai-sdk/openai provider

reproduction needed

support

Status: Open.

#14521 In vercel/ai;

· Vansh1811 opened on Apr 16, 2026

fix(openai): ChatGPT Codex OAuth SSE stream fails on truncated response.* events

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/openaiIssues related to the @ai-sdk/openai providerIssues related to the @ai-sdk/openai provider

reproduction provided

Status: Open.

#14473 In vercel/ai;

· wzharies opened on Apr 15, 2026

Invalid tool call input stored as raw string causes API rejection on next step

ai/corecore functions like generateText, streamText, etc. Provider utils, and provider spec.core functions like generateText, streamText, etc. Provider utils, and provider spec.

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/amazon-bedrockIssues related to the @ai-sdk/amazon-bedrock providerIssues related to the @ai-sdk/amazon-bedrock provider

reproduction provided

Status: Open.

#14442 In vercel/ai;

· atran3 opened on Apr 14, 2026

🤖 Provider model changes - google

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

maintenanceCI, internal documentation, automations, etcCI, internal documentation, automations, etc

provider/googleIssues related to the @ai-sdk/google providerIssues related to the @ai-sdk/google provider

Status: Open.

#14432 In vercel/ai;

· vercel-ai-sdk opened on Apr 14, 2026

streamText: deny approval crashes with "Missing required parameter: input[N].output"

ai/corecore functions like generateText, streamText, etc. Provider utils, and provider spec.core functions like generateText, streamText, etc. Provider utils, and provider spec.

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/openaiIssues related to the @ai-sdk/openai providerIssues related to the @ai-sdk/openai provider

reproduction provided

Status: Open.

#14428 In vercel/ai;

· zoxeavv opened on Apr 14, 2026

embed/embedMany crash: 'warnings' is undefined from EmbeddingModelV2 providers

ai/corecore functions like generateText, streamText, etc. Provider utils, and provider spec.core functions like generateText, streamText, etc. Provider utils, and provider spec.

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/google-vertexIssues related to the @ai-sdk/google-vertex providerIssues related to the @ai-sdk/google-vertex provider

reproduction provided

Status: Open.

#14425 In vercel/ai;

· rockingrohit9639 opened on Apr 14, 2026

gateway.getAvailableModels() throws on cohere/rerank-v3.5: schema enum missing "reranking"

ai/providerrelated to a provider package. Must be assigned together with at least one `provider/*` labelrelated to a provider package. Must be assigned together with at least one `provider/*` label

bugSomething isn't working as documentedSomething isn't working as documented

provider/cohereIssues related to the @ai-sdk/cohere providerIssues related to the @ai-sdk/cohere provider

provider/gatewayIssues related to the @ai-sdk/gateway providerIssues related to the @ai-sdk/gateway provider

reproduction provided

Status: Open.

#14422 In vercel/ai;

· nikolailehbrink opened on Apr 14, 2026