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feat(ai): add thinkingDisplay option for Anthropic and Bedrock Claude

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Exposes the new ThinkingConfig.display field on Anthropic and Bedrock
Claude providers. Defaults to 'summarized' so Claude Opus 4.7 and Mythos
Preview keep returning thinking text despite Anthropic's silent default
change to 'omitted'. Set to 'omitted' explicitly to skip thinking
streaming for faster time-to-first-text-token.
This commit is contained in:
Mario Zechner
2026-04-16 22:12:06 +02:00
parent 7b45c52807
commit acbf8eca06
4 changed files with 45 additions and 5 deletions
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22
packages/ai/src/providers/anthropic.ts
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@@ -156,6 +156,8 @@ function convertContentBlocks(content: (TextContent | ImageContent)[]):
export type AnthropicEffort = "low" | "medium" | "high" | "xhigh" | "max";
export type AnthropicThinkingDisplay = "summarized" | "omitted";
export interface AnthropicOptions extends StreamOptions {
/**
* Enable extended thinking.
@@ -179,6 +181,18 @@ export interface AnthropicOptions extends StreamOptions {
* Ignored for older models.
*/
effort?: AnthropicEffort;
/**
* Controls how thinking content is returned in API responses.
* - "summarized": Thinking blocks contain summarized thinking text (default here).
* - "omitted": Thinking blocks return an empty thinking field; the encrypted
* signature still travels back for multi-turn continuity. Use for faster
* time-to-first-text-token when your UI does not surface thinking.
*
* Note: Anthropic's API default for Claude Opus 4.7 and Claude Mythos Preview
* is "omitted". We default to "summarized" here to keep behavior consistent
* with older Claude 4 models. Set this explicitly to "omitted" to opt in.
*/
thinkingDisplay?: AnthropicThinkingDisplay;
interleavedThinking?: boolean;
toolChoice?: "auto" | "any" | "none" | { type: "tool"; name: string };
/**
@@ -678,11 +692,14 @@ function buildParams(
// budget-based (older models), or explicitly disabled.
if (model.reasoning) {
if (options?.thinkingEnabled) {
// Default to "summarized" so Opus 4.7 and Mythos Preview behave like
// older Claude 4 models (whose API default is also "summarized").
const display: AnthropicThinkingDisplay = options.thinkingDisplay ?? "summarized";
if (supportsAdaptiveThinking(model.id)) {
// Adaptive thinking: Claude decides when and how much to think.
// The Anthropic SDK types can lag newly supported effort values such as "xhigh".
params.thinking = { type: "adaptive" };
params.thinking = { type: "adaptive", display };
if (options.effort) {
// The Anthropic SDK types can lag newly supported effort values such as "xhigh".
params.output_config =
options.effort === "xhigh"
? ({ effort: options.effort } as unknown as NonNullable<
@@ -695,6 +712,7 @@ function buildParams(
params.thinking = {
type: "enabled",
budget_tokens: options.thinkingBudgetTokens || 1024,
display,
};
}
} else if (options?.thinkingEnabled === false) {