@ai-sdk/openai

openai: Preserve valid JSON string tool arguments and serialize BigInt and cycles in tool calls and results, retaining malformed argument replay fallbacks

Forward languages and keywords transcription hints as repeated multipart fields instead of silently dropping them. Warn when these REST-only options are supplied to streaming transcription.

Support promises and synchronous or asynchronous callbacks in provider API key and token settings. Resolve credentials per authenticated request while preserving existing authentication behavior and synchronous credential serialization.

Introduce a model entry contract with named capability sections and request configuration. Consolidate the OpenAI and Anthropic model catalogs so existing request behavior and generated capability documentation use the same source of truth. Catalogs also declare the provider options each provider accepts and which models support them.

openai: Send native JSON input and prompt cache keys to Decisions

openai: Map top-level reasoning to efforts supported by GPT-5.x models instead of sending unsupported values that OpenAI rejects with a 400. max is now only sent on the Responses API, and GPT-5.6 on Chat Completions sends reasoning_effort: 'none' when function tools are used, since it rejects function tools with reasoning. A warning is emitted when a reasoning level was requested.

Map the top-level reasoning option consistently across providers

openai: Add GPT-6.1 Terra model support

Support streaming transcription with gpt-live-transcribe and gpt-transcribe. For these models the language provider option is sent as a single-entry languages list. gpt-transcribe warns about and omits streaming.delay, which it does not support. gpt-live-transcribe rejects non-streaming transcription, since it has no REST endpoint.

openai: Read transcription duration from usage for duration-billed json responses

openai: Strip propertyNames schemas that omit type: 'string' (e.g. Zod 3 records with constrained keys) instead of throwing an unsupported functionality error

openai: Report unfinished web searches as tool errors

openai: Only send transcription response format and timestamp defaults when needed

Add azure.tools.toolSearch and support azure provider options on responses function tools

Fix string interpolation in Amazon Bedrock unsupported provider tool warnings and OpenAI / OpenAI-compatible completion errors for unexpected system messages.

Fix non-streaming Responses API structured output failing when multiple assistant messages contain JSON. Providers can supply separate structured-output text for parsing, allowing OpenAI and Azure Responses models to select the last final_answer while preserving all generated content, annotations, conversation history, and token usage.