feat(agents): support thinkingDefault: "adaptive" for Anthropic models (#31227)

* feat(agents): support `thinkingDefault: "adaptive"` for Anthropic models

Anthropic's Opus 4.6 and Sonnet 4.6 support adaptive thinking where the
model dynamically decides when and how much to think.  This is now
Anthropic's recommended mode and `budget_tokens` is deprecated on these
models.

Add "adaptive" as a valid thinking level:
- Config: `agents.defaults.thinkingDefault: "adaptive"`
- CLI: `/think adaptive` or `/think auto`
- Pi SDK mapping: "adaptive" → "medium" effort at the pi-agent-core
  layer, which the Anthropic provider translates to
  `thinking.type: "adaptive"` with `output_config.effort: "medium"`
- Provider fallbacks: OpenRouter and Google map "adaptive" to their
  respective "medium" equivalents

Closes #30880

Made-with: Cursor

* style(changelog): format changelog with oxfmt

* test(types): fix strict typing in runtime/plugin-context tests

---------

Co-authored-by: Peter Steinberger <steipete@gmail.com>
This commit is contained in:
Sid
2026-03-02 11:52:02 +08:00
committed by GitHub
parent ede944371f
commit c9f0d6ac8e
9 changed files with 35 additions and 5 deletions

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@@ -33,6 +33,12 @@ describe("normalizeThinkLevel", () => {
it("accepts on as low", () => {
expect(normalizeThinkLevel("on")).toBe("low");
});
it("accepts adaptive and auto aliases", () => {
expect(normalizeThinkLevel("adaptive")).toBe("adaptive");
expect(normalizeThinkLevel("auto")).toBe("adaptive");
expect(normalizeThinkLevel("Adaptive")).toBe("adaptive");
});
});
describe("listThinkingLevels", () => {
@@ -54,6 +60,11 @@ describe("listThinkingLevels", () => {
it("excludes xhigh for non-codex models", () => {
expect(listThinkingLevels(undefined, "gpt-4.1-mini")).not.toContain("xhigh");
});
it("always includes adaptive", () => {
expect(listThinkingLevels(undefined, "gpt-4.1-mini")).toContain("adaptive");
expect(listThinkingLevels("anthropic", "claude-opus-4-6")).toContain("adaptive");
});
});
describe("listThinkingLevelLabels", () => {

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@@ -1,4 +1,4 @@
export type ThinkLevel = "off" | "minimal" | "low" | "medium" | "high" | "xhigh";
export type ThinkLevel = "off" | "minimal" | "low" | "medium" | "high" | "xhigh" | "adaptive";
export type VerboseLevel = "off" | "on" | "full";
export type NoticeLevel = "off" | "on" | "full";
export type ElevatedLevel = "off" | "on" | "ask" | "full";
@@ -45,6 +45,9 @@ export function normalizeThinkLevel(raw?: string | null): ThinkLevel | undefined
}
const key = raw.trim().toLowerCase();
const collapsed = key.replace(/[\s_-]+/g, "");
if (collapsed === "adaptive" || collapsed === "auto") {
return "adaptive";
}
if (collapsed === "xhigh" || collapsed === "extrahigh") {
return "xhigh";
}
@@ -91,6 +94,7 @@ export function listThinkingLevels(provider?: string | null, model?: string | nu
if (supportsXHighThinking(provider, model)) {
levels.push("xhigh");
}
levels.push("adaptive");
return levels;
}