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cursor: Test Grok 4.6 Fast parameter mapping #1550

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2a39ce3
cursor: Test Grok 4.6 Fast parameter mapping
jontonsoup Aug 12, 2026
e36f059
cursor: Fix Grok 4.6 Fast context window
jontonsoup Aug 12, 2026
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2 changes: 1 addition & 1 deletion src/adapters/cursor/discovery.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -242,7 +242,7 @@ export const CURSOR_STATIC_MODELS: readonly CursorModelInfo[] = normalizeCursorM
{ id: "grok-4.5-fast", contextWindow: 500_000, supportsReasoningEffort: true },
// 260813 preemptive: grok-4.6 seeded ahead of Cursor's lineup update (mirrors grok-4.5).
{ id: "grok-4.6", contextWindow: 500_000, supportsReasoningEffort: true },
{ id: "grok-4.6-fast", contextWindow: 500_000, supportsReasoningEffort: true },
{ id: "grok-4.6-fast", contextWindow: 256_000, supportsReasoningEffort: true },
]);

export function cursorModelIds(models: readonly CursorModelInfo[] = CURSOR_STATIC_MODELS): string[] {
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2 changes: 2 additions & 0 deletions tests/cursor-discovery.test.ts
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Expand Up @@ -37,6 +37,7 @@ describe("Cursor discovery metadata", () => {
expect(ids).toContain("glm-5.2");
expect(ids).toContain("kimi-k2.7-code");
expect(ids).toContain("kimi-k3");
expect(ids).toContain("grok-4.6-fast");
expect(ids).toContain("claude-opus-4-7-fast");
// 260709 refresh: stale ids dropped from the static seed (cursor.com docs); gpt-5.5-extra
// stays — it survives the live GetUsableModels filter (004_live_snapshot.md).
Expand All @@ -50,6 +51,7 @@ describe("Cursor discovery metadata", () => {
expect(cursorModelContextWindows(CURSOR_STATIC_MODELS)[id]).toBe(200_000);
}
expect(cursorModelContextWindows(CURSOR_STATIC_MODELS)["composer-2.5-fast"]).toBe(200_000);
expect(cursorModelContextWindows(CURSOR_STATIC_MODELS)["grok-4.6-fast"]).toBe(256_000);
});

test("auto is not activated by live GetUsableModels wire ids alone", () => {
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7 changes: 7 additions & 0 deletions tests/cursor-effort-suffix.test.ts
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Expand Up @@ -127,6 +127,13 @@ describe("Cursor per-model reasoning-effort suffix", () => {
expect(cursorModelEffortLadder("grok-4.5-fast")).toEqual(["low", "medium", "high"]);
});

test("grok-4.6 sends effort and Fast as separate model parameters", () => {
expect(selectionFor("cursor/grok-4.6-fast", "high")).toEqual({
modelId: "grok-4.6",
parameters: [{ id: "effort", value: "high" }, { id: "fast", value: "true" }],
});
});

test("regular grok-4.5 request ids match the recorded discovery fixture", () => {
for (const effort of ["low", "medium", "high"] as const) {
const requestModelId = modelIdFor("cursor/grok-4.5", effort);
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