feat(antigravity): add Gemini 3.7 Flash models (#3286, #3281)

Add gemini-3.7-flash and its tiered high/medium/low variants to the
Antigravity and Gemini registries, with matching capabilities, pricing
and Antigravity quota tracking.

extractModel now recognises gemini-3.7-flash-tiered alongside 3.6 and
derives the version from the request, so thinkingLevel still maps to the
right tiered alias.

Closes #3286
Closes #3281

cli/src/cli/menus/providers.js

@@ -53,6 +53,9 @@ const PROVIDER_MODELS = {
     { id: "glm-4.7" },
   ],
   ag: [
+    { id: "gemini-3.7-flash-high" },
+    { id: "gemini-3.7-flash-medium" },
+    { id: "gemini-3.7-flash-low" },
     { id: "gemini-3.6-flash-high" },
     { id: "gemini-3.6-flash-medium" },
     { id: "gemini-3.6-flash-low" },

open-sse/providers/capabilities.js

@@ -205,6 +205,7 @@ export const PATTERN_CAPABILITIES = [
 
   // ── Gemini (all 2.0+ multimodal + google_search grounding, 1M ctx) ─
   { pattern: "*gemini*image*",  caps: { vision: true, imageOutput: true, contextWindow: 1048576 } },
+  { pattern: "*gemini-3.7*",    caps: { vision: true, audioInput: true, videoInput: true, reasoning: true, search: true, thinkingFormat: "gemini-level", thinkingCanDisable: false, contextWindow: 1048576, maxOutput: 65536 } },
   { pattern: "*gemini-3*pro*",  caps: { vision: true, audioInput: true, videoInput: true, reasoning: true, search: true, thinkingFormat: "gemini-level", thinkingCanDisable: false, contextWindow: 1048576, maxOutput: 65535 } },
   { pattern: "*gemini-3*",      caps: { vision: true, audioInput: true, videoInput: true, reasoning: true, search: true, thinkingFormat: "gemini-level", thinkingCanDisable: false, contextWindow: 1048576, maxOutput: 65536 } },
   { pattern: "*gemini-2.5*",    caps: { vision: true, audioInput: true, videoInput: true, reasoning: true, search: true, thinkingFormat: "gemini-budget", thinkingRange: { min: 0, max: 24576 }, contextWindow: 1048576, maxOutput: 65536 } },

open-sse/providers/pricing.js

@@ -57,6 +57,10 @@ export const MODEL_PRICING = {
   "o1-mini":                      { input: 3.00,  output: 12.00, cached: 1.50,  reasoning: 18.00,  cache_creation: 3.00  },
 
   // === Gemini ===
+  "gemini-3.7-flash":              { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },
+  "gemini-3.7-flash-high":         { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },
+  "gemini-3.7-flash-medium":       { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },
+  "gemini-3.7-flash-low":          { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },
   "gemini-3.6-flash":              { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },
   "gemini-3.6-flash-high":         { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },
   "gemini-3.6-flash-medium":       { input: 1.50,  output: 7.50,  cached: 0.15,  reasoning: 11.25,  cache_creation: 1.875 },

open-sse/providers/registry/antigravity.js

@@ -45,6 +45,9 @@ export default {
     clientSecret: "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",
   },
   models: [
+    { id: "gemini-3.7-flash-high", name: "Gemini 3.7 Flash (High)", upstreamModelId: "gemini-3.7-flash-tiered(high)" },
+    { id: "gemini-3.7-flash-medium", name: "Gemini 3.7 Flash (Medium)", upstreamModelId: "gemini-3.7-flash-tiered(medium)" },
+    { id: "gemini-3.7-flash-low", name: "Gemini 3.7 Flash (Low)", upstreamModelId: "gemini-3.7-flash-tiered(low)" },
     { id: "gemini-3.6-flash-high", name: "Gemini 3.6 Flash (High)", upstreamModelId: "gemini-3.6-flash-tiered(high)" },
     { id: "gemini-3.6-flash-medium", name: "Gemini 3.6 Flash (Medium)", upstreamModelId: "gemini-3.6-flash-tiered(medium)" },
     { id: "gemini-3.6-flash-low", name: "Gemini 3.6 Flash (Low)", upstreamModelId: "gemini-3.6-flash-tiered(low)" },

open-sse/providers/registry/gemini.js

@@ -36,6 +36,7 @@ export default {
     },
   },
   models: [
+    { id: "gemini-3.7-flash", name: "Gemini 3.7 Flash" },
     { id: "gemini-3.6-flash", name: "Gemini 3.6 Flash" },
     { id: "gemini-3.5-flash-lite", name: "Gemini 3.5 Flash Lite" },
     { id: "gemini-3.1-pro-preview", name: "Gemini 3.1 Pro Preview" },

open-sse/services/usage/google.js

@@ -161,6 +161,9 @@ export async function getAntigravityUsage(accessToken, providerSpecificData, pro
     if (data.models) {
       // Filter only recommended/important models (must match PROVIDER_MODELS ag ids)
       const importantModels = [
+        'gemini-3.7-flash-high',
+        'gemini-3.7-flash-medium',
+        'gemini-3.7-flash-low',
         'gemini-3.6-flash-high',
         'gemini-3.6-flash-medium',
         'gemini-3.6-flash-low',

src/mitm/config.js

@@ -55,6 +55,9 @@ const MODEL_SYNONYMS = {
     "gemini-3.5-flash-high": "gemini-3-flash-agent",
     "gemini-3.5-flash-medium": "gemini-3.5-flash-low",
     "gemini-3.5-flash-extra-low": "gemini-3.5-flash-extra-low",
+     "gemini-3.7-flash-high": "gemini-3.7-flash-high",
+    "gemini-3.7-flash-medium": "gemini-3.7-flash-medium",
+    "gemini-3.7-flash-low": "gemini-3.7-flash-low",
     "gemini-3.1-pro-high": "gemini-pro-agent",
     "gemini-3-pro-high": "gemini-pro-agent",
     "gemini-3-pro-low": "gemini-3.1-pro-low",
@@ -131,13 +134,15 @@ function extractModel(url, body) {
       return parsed.conversationState.currentMessage?.userInputMessage?.modelId || null;
     }
     const model = urlModel || parsed.model || null;
-    if (String(model).replace(/^models\//, "") === "gemini-3.6-flash-tiered") {
+    const cleanModelName = String(model).replace(/^models\//, "");
+    if (cleanModelName === "gemini-3.6-flash-tiered" || cleanModelName === "gemini-3.7-flash-tiered") {
+      const ver = cleanModelName.includes("3.7") ? "3.7" : "3.6";
       const rawLevel = parsed.request?.generationConfig?.thinkingConfig?.thinkingLevel
         || parsed.generationConfig?.thinkingConfig?.thinkingLevel;
       const level = ["high", "medium", "low"].includes(String(rawLevel).toLowerCase())
         ? String(rawLevel).toLowerCase()
         : "medium";
-      return `gemini-3.6-flash-${level}`;
+      return `gemini-${ver}-flash-${level}`;
     }
     return model;
   } catch {

src/shared/constants/cliTools.js

@@ -8,7 +8,7 @@ export const MITM_TOOLS = {
     description: "Google Antigravity IDE with MITM",
     configType: "mitm",
     mitmDomain: "daily-cloudcode-pa.googleapis.com",
-    modelAliases: ["gemini-3.6-flash-high", "gemini-3.6-flash-medium", "gemini-3.6-flash-low", "gemini-3.5-flash-low", "gemini-3-flash-agent", "gemini-3.5-flash-extra-low", "gemini-3.1-pro-low", "gemini-pro-agent", "claude-sonnet-4-6", "claude-opus-4-6-thinking", "gpt-oss-120b-medium", "gemini-3-flash"],
+    modelAliases: ["gemini-3.7-flash-high", "gemini-3.7-flash-medium", "gemini-3.7-flash-low", "gemini-3.6-flash-high", "gemini-3.6-flash-medium", "gemini-3.6-flash-low", "gemini-3.5-flash-low", "gemini-3-flash-agent", "gemini-3.5-flash-extra-low", "gemini-3.1-pro-low", "gemini-pro-agent", "claude-sonnet-4-6", "claude-opus-4-6-thinking", "gpt-oss-120b-medium", "gemini-3-flash"],
     defaultModels: [
       { id: "gemini-3.6-flash-high", name: "Gemini 3.6 Flash (High)", alias: "gemini-3.6-flash-high" },
       { id: "gemini-3.6-flash-medium", name: "Gemini 3.6 Flash (Medium)", alias: "gemini-3.6-flash-medium" },

tests/unit/antigravity-quota-gemini-3.7.test.js

@@ -0,0 +1,61 @@
+import { describe, expect, it, vi, beforeEach } from "vitest";
+
+const proxyAwareFetch = vi.fn(async (url) => ({
+  ok: true,
+  status: 200,
+  json: async () => url.includes(":loadCodeAssist")
+    ? { cloudaicompanionProject: "project-1", currentTier: { name: "Pro" } }
+    : {
+        models: {
+          "gemini-3.7-flash-high": {
+            displayName: "Gemini 3.7 Flash (High)",
+            quotaInfo: { remainingFraction: 0.85, resetTime: "2026-08-25T12:00:00Z" },
+          },
+          "gemini-3.7-flash-medium": {
+            displayName: "Gemini 3.7 Flash (Medium)",
+            quotaInfo: { remainingFraction: 0.6, resetTime: "2026-08-25T12:00:00Z" },
+          },
+          "gemini-3.7-flash-low": {
+            displayName: "Gemini 3.7 Flash (Low)",
+            quotaInfo: { remainingFraction: 0.35, resetTime: "2026-08-25T12:00:00Z" },
+          },
+          "internal-model": {
+            displayName: "Internal",
+            isInternal: true,
+            quotaInfo: { remainingFraction: 0.5 },
+          },
+        },
+      },
+  text: async () => "{}",
+}));
+
+vi.mock("../../open-sse/utils/proxyFetch.js", () => ({
+  proxyAwareFetch,
+}));
+
+describe("Antigravity quota tracker: Gemini 3.7 Flash usage bars", () => {
+  beforeEach(() => proxyAwareFetch.mockClear());
+
+  it("returns Gemini 3.7 Flash tier quotas so the dashboard can render usage bars", async () => {
+    const { getAntigravityUsage } = await import("../../open-sse/services/usage/google.js");
+
+    const usage = await getAntigravityUsage("access-token", {});
+
+    expect(usage.quotas["gemini-3.7-flash-high"]).toMatchObject({
+      used: 150,
+      total: 1000,
+      remainingPercentage: 85,
+      displayName: "Gemini 3.7 Flash (High)",
+    });
+    expect(usage.quotas["gemini-3.7-flash-medium"]).toMatchObject({
+      used: 400,
+      total: 1000,
+      remainingPercentage: 60,
+    });
+    expect(usage.quotas["gemini-3.7-flash-low"]).toMatchObject({
+      used: 650,
+      total: 1000,
+      remainingPercentage: 35,
+    });
+  });
+});

tests/unit/gemini-3.7-antigravity.test.js

@@ -0,0 +1,36 @@
+import { describe, it, expect } from "vitest";
+import { getCapabilitiesForModel } from "../../open-sse/providers/capabilities.js";
+import antigravityRegistry from "../../open-sse/providers/registry/antigravity.js";
+import geminiRegistry from "../../open-sse/providers/registry/gemini.js";
+import { MODEL_PRICING } from "../../open-sse/providers/pricing.js";
+
+describe("Gemini 3.7 Flash Support & Config (#3286, #3281)", () => {
+  it("registers gemini-3.7-flash tiered models in antigravity provider registry", () => {
+    const agIds = antigravityRegistry.models.map(m => m.id);
+    expect(agIds).toContain("gemini-3.7-flash-high");
+    expect(agIds).toContain("gemini-3.7-flash-medium");
+    expect(agIds).toContain("gemini-3.7-flash-low");
+    expect(agIds).not.toContain("gemini-3.7-flash");
+  });
+
+  it("registers gemini-3.7-flash in gemini provider registry", () => {
+    const geminiIds = geminiRegistry.models.map(m => m.id);
+    expect(geminiIds).toContain("gemini-3.7-flash");
+  });
+
+  it("resolves capabilities correctly for gemini-3.7 models with official limits", () => {
+    const caps = getCapabilitiesForModel("antigravity", "gemini-3.7-flash-high");
+    expect(caps.vision).toBe(true);
+    expect(caps.reasoning).toBe(true);
+    expect(caps.thinkingFormat).toBe("gemini-level");
+    expect(caps.contextWindow).toBe(1048576);
+    expect(caps.maxOutput).toBe(65536);
+  });
+
+  it("defines pricing matching gemini-3.6-flash baseline", () => {
+    expect(MODEL_PRICING["gemini-3.7-flash"]).toEqual(MODEL_PRICING["gemini-3.6-flash"]);
+    expect(MODEL_PRICING["gemini-3.7-flash-high"]).toEqual(MODEL_PRICING["gemini-3.6-flash-high"]);
+    expect(MODEL_PRICING["gemini-3.7-flash-medium"]).toEqual(MODEL_PRICING["gemini-3.6-flash-medium"]);
+    expect(MODEL_PRICING["gemini-3.7-flash-low"]).toEqual(MODEL_PRICING["gemini-3.6-flash-low"]);
+  });
+});