@ai-sdk/xai@4.0.0-canary.61

Patch Changes

• 80e1702: feat(xai): support 'none' and 'medium' reasoning effort for grok-4.3, and curate the model ID autocomplete list

  grok-4.3 accepts reasoning_effort of "none" | "low" | "medium" | "high", where "none" disables reasoning entirely (no thinking tokens) and "medium" provides more thinking for less-latency-sensitive applications.

  • Adds 'none' to the allowed values for providerOptions.xai.reasoningEffort on both the chat (xai()) and responses (xai.responses()) language models.
  • Adds 'medium' to the chat model's reasoningEffort enum (the responses model already supported it).
  • Top-level reasoning: 'medium' now maps to reasoning_effort: 'medium' for the chat model (previously it was coerced to 'low' because 'medium' was not a valid value).

  In addition, the XaiChatModelId and XaiResponsesModelId autocomplete unions have been trimmed to xAI's current model lineup (docs):

  • grok-4.20-non-reasoning
  • grok-4.20-reasoning
  • grok-4.3
  • grok-latest

  Older entries (grok-3*, grok-4, grok-4-0709, grok-4-latest, grok-4-1-fast-*, grok-4-fast-*, grok-code-fast-1, and grok-4.20-multi-agent-0309) have been removed from the autocomplete list. This is not a runtime change — the model ID type is still open ((string & {})), so passing any model ID that the xAI API accepts continues to work; only IDE autocomplete is affected.

  import { xai } from "@ai-sdk/xai";
  import { generateText } from "ai";
  
  await generateText({
    model: xai("grok-4.3"),
    prompt: "Hi",
    providerOptions: {
      xai: { reasoningEffort: "none" },
    },
  });