[vscode-lm] Use measured input budgets for Opus 5.5 and Astra

packages/types/src/__tests__/vscode-llm.spec.ts

@@ -2,9 +2,9 @@ import { describe, it, expect } from "vitest"
 
 import { vscodeLlmModels, vscodeLlmDefaultModelId } from "../providers/vscode-llm.js"
 
-// The five families added and the two refreshed on 2026-09-10 (VS Code 1.137.0).
+// The five families added and the two refreshed on 2026-09-10 (VS Code 1.137.0), with Astra remeasured 2026-09-23.
 const SCOPED_ROWS = {
-	"gpt-6-astra": { contextWindow: 871793, maxInputTokens: 271783, supportsImages: true },
+	"gpt-6-astra": { contextWindow: 921793, maxInputTokens: 271789, supportsImages: true },
 	"grok-4.5": { contextWindow: 424794, maxInputTokens: 199783, supportsImages: false },
 	"grok-4.6": { contextWindow: 424794, maxInputTokens: 199784, supportsImages: false },
 	"gemini-3.7-flash": { contextWindow: 935793, maxInputTokens: 935783, supportsImages: true },
@@ -71,12 +71,13 @@ describe("vscodeLlmModels", () => {
 			expect(model.contextWindow, `${family}: contextWindow`).toBe(expected.contextWindow)
 			expect(model.supportsImages, `${family}: supportsImages`).toBe(expected.supportsImages)
 
-			// Table-wide conventions: prices are 0 because these rows carry no per-token accounting,
-			// and supportsPromptCache is false because no cache is modelled here (not a claim about
-			// the backend). Tool calling is required for Roo to function.
+			// Caching false is a schema default, not a backend claim. Keep legacy zero prices except
+			// Astra's unmeasured prices, whose omission is checked separately below.
 			expect(model.supportsPromptCache, `${family}: supportsPromptCache`).toBe(false)
-			expect(model.inputPrice, `${family}: inputPrice`).toBe(0)
-			expect(model.outputPrice, `${family}: outputPrice`).toBe(0)
+			if (family !== "gpt-6-astra") {
+				expect(model, `${family}: inputPrice`).toHaveProperty("inputPrice", 0)
+				expect(model, `${family}: outputPrice`).toHaveProperty("outputPrice", 0)
+			}
 			expect(model.supportsToolCalling, `${family}: supportsToolCalling`).toBe(true)
 
 			// Provider and gauge look rows up by the live client's family string, so the key, family
@@ -86,6 +87,41 @@ describe("vscodeLlmModels", () => {
 		}
 	})
 
+	it("records the 2026-09-23 Opus 5.5 row at its verified accepted lower bound", () => {
+		// 677108 is the largest ACCEPTED request over 13 trials (VS Code 1.137.0, copilot), not the
+		// exact ceiling — 695778 was rejected and model-declined errors left the bracket open.
+		// Images and tool calling were observed; prompt caching remains unverified.
+		expect(vscodeLlmModels).toHaveProperty("claude-opus-5.5")
+		expect(vscodeLlmModels["claude-opus-5.5"].maxInputTokens).toBe(677108)
+		expect(vscodeLlmModels["claude-opus-5.5"].contextWindow).toBe(871793)
+		expect(vscodeLlmModels["claude-opus-5.5"].family).toBe("claude-opus-5.5")
+		expect(vscodeLlmModels["claude-opus-5.5"].version).toBe("claude-opus-5.5")
+		expect(vscodeLlmModels["claude-opus-5.5"].name).toBe("Claude Opus 5.5")
+		expect(vscodeLlmModels["claude-opus-5.5"].supportsImages).toBe(true)
+		expect(vscodeLlmModels["claude-opus-5.5"].supportsToolCalling).toBe(true)
+		expect(vscodeLlmModels["claude-opus-5.5"].supportsPromptCache).toBe(false)
+		expect(vscodeLlmModels["claude-opus-5.5"].inputPrice).toBe(0)
+		expect(vscodeLlmModels["claude-opus-5.5"].outputPrice).toBe(0)
+	})
+
+	it("records the 2026-09-23 measured GPT-6 Astra row without unmeasured pricing or caching claims", () => {
+		// 271789 accepted with an adjacent rejection at 271790 over 20 trials; images and tool calling
+		// observed. supportsPromptCache `false` is the required-schema default, NOT a verified result.
+		const astra = vscodeLlmModels["gpt-6-astra"]
+		expect(astra.maxInputTokens).toBe(271789)
+		expect(astra.contextWindow).toBe(921793)
+		expect(astra.family).toBe("gpt-6-astra")
+		expect(astra.version).toBe("gpt-6-astra")
+		expect(astra.name).toBe("GPT-6 Astra")
+		expect(astra.supportsImages).toBe(true)
+		expect(astra.supportsToolCalling).toBe(true)
+		expect(astra.supportsPromptCache).toBe(false)
+		// Pricing was never measured, and ModelInfo makes those fields optional, so they are omitted
+		// rather than filled with zeros the way older hand-authored rows were.
+		expect(astra).not.toHaveProperty("inputPrice")
+		expect(astra).not.toHaveProperty("outputPrice")
+	})
+
 	it("keeps both window fields populated and positive for every row", () => {
 		// The two fields are ALLOWED to differ (claude-opus-4.8: 679560 vs 197897), so equality is
 		// deliberately NOT asserted. The invariant is positive integers on both fields; a missing or

packages/types/src/providers/vscode-llm.ts

@@ -10,6 +10,21 @@ export const vscodeLlmDefaultModelId: VscodeLlmModelId = "claude-sonnet-4.5"
 // sibling row. Per-row evidence, lower-bound and vendor caveats:
 // myplans/vscode-lm-model-table-integrity/vscode-lm-model-table-integrity-design.md
 export const vscodeLlmModels = {
+	// Measured 2026-09-23, VS Code 1.137.0/copilot, 13 trials: accepted 677108, rejected 695778.
+	// Refusals prevent an exact ceiling; keep the accepted lower bound rather than a sibling limit.
+	// Image/tool inputs succeeded; caching `false` is an unverified schema-required default.
+	"claude-opus-5.5": {
+		contextWindow: 871793,
+		supportsImages: true,
+		supportsPromptCache: false,
+		inputPrice: 0,
+		outputPrice: 0,
+		family: "claude-opus-5.5",
+		version: "claude-opus-5.5",
+		name: "Claude Opus 5.5",
+		supportsToolCalling: true,
+		maxInputTokens: 677108,
+	},
 	"claude-opus-5": {
 		contextWindow: 935793,
 		supportsImages: true,
@@ -118,17 +133,17 @@ export const vscodeLlmModels = {
 		supportsToolCalling: true,
 		maxInputTokens: 135790,
 	},
+	// Measured 2026-09-23, VS Code 1.137.0/copilot, 20-trial binary search: 271789 accepted, 271790 rejected.
+	// Image/tool inputs succeeded; caching `false` is an unverified schema-required default.
 	"gpt-6-astra": {
-		contextWindow: 871793,
+		contextWindow: 921793,
 		supportsImages: true,
 		supportsPromptCache: false,
-		inputPrice: 0,
-		outputPrice: 0,
 		family: "gpt-6-astra",
 		version: "gpt-6-astra",
 		name: "GPT-6 Astra",
 		supportsToolCalling: true,
-		maxInputTokens: 271783,
+		maxInputTokens: 271789,
 	},
 	"gpt-5.6-luna": {
 		contextWindow: 199753,

src/api/providers/__tests__/vscode-lm.spec.ts

@@ -142,7 +142,7 @@ describe("VsCodeLmHandler", () => {
 		})
 
 		it.each([
-			["gpt-6-astra", 271783],
+			["gpt-6-astra", 271789],
 			["grok-4.5", 199783],
 			["grok-4.6", 199784],
 			["gemini-3.7-flash", 935783],
@@ -192,7 +192,7 @@ describe("VsCodeLmHandler", () => {
 				vsCodeLmModelSelector: { vendor: "some-other-vendor", family: "gpt-6-astra" },
 			})
 
-			expect(copilotHandler.getCondenseContextWindow()).toBe(271783)
+			expect(copilotHandler.getCondenseContextWindow()).toBe(271789)
 			expect(otherVendorHandler.getCondenseContextWindow()).toBe(copilotHandler.getCondenseContextWindow())
 
 			copilotHandler.dispose()

webview-ui/src/components/ui/hooks/__tests__/useSelectedModel.spec.ts

@@ -810,7 +810,7 @@ describe("useSelectedModel", () => {
 		})
 
 		it.each([
-			["gpt-6-astra", 271783, true],
+			["gpt-6-astra", 271789, true],
 			["grok-4.5", 199783, false],
 			["grok-4.6", 199784, false],
 			["gemini-3.7-flash", 935783, true],