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Merged
SandyTao520 merged 7 commits into from
Feb 11, 2026
Merged

feat(core): update internal utility models to Gemini 3 #18773

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fcf3f6d
feat(core): update loop detection and web tools to Gemini 3 models
SandyTao520 Feb 10, 2026
5840cbc
test(core): update golden files for Gemini 3 utility models
SandyTao520 Feb 10, 2026
4c1d9ff
feat(core): implement proactive Gemini 3 access check and update util…
SandyTao520 Feb 10, 2026
f6929ae
style(core): apply prettier formatting
SandyTao520 Feb 11, 2026
58ff709
docs: regenerate settings schema and docs for model updates
SandyTao520 Feb 11, 2026
554d98a
fix: use isGemini3Model helper, align loop-detection alias, and rever…
SandyTao520 Feb 11, 2026
69231b8
docs: regenerate settings schema for model updates
SandyTao520 Feb 11, 2026
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22 changes: 14 additions & 8 deletions docs/get-started/configuration.md
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Original file line number Diff line number Diff line change
Expand Up @@ -447,6 +447,12 @@ their corresponding top-level category object in your `settings.json` file.
"model": "gemini-2.5-flash"
}
},
"gemini-3-flash-base": {
"extends": "base",
"modelConfig": {
"model": "gemini-3-flash-preview"
}
},
"classifier": {
"extends": "base",
"modelConfig": {
Expand Down Expand Up @@ -502,7 +508,7 @@ their corresponding top-level category object in your `settings.json` file.
}
},
"web-search": {
"extends": "gemini-2.5-flash-base",
"extends": "gemini-3-flash-base",
"modelConfig": {
"generateContentConfig": {
"tools": [
Expand All @@ -514,7 +520,7 @@ their corresponding top-level category object in your `settings.json` file.
}
},
"web-fetch": {
"extends": "gemini-2.5-flash-base",
"extends": "gemini-3-flash-base",
"modelConfig": {
"generateContentConfig": {
"tools": [
Expand All @@ -526,25 +532,25 @@ their corresponding top-level category object in your `settings.json` file.
}
},
"web-fetch-fallback": {
"extends": "gemini-2.5-flash-base",
"extends": "gemini-3-flash-base",
"modelConfig": {}
},
"loop-detection": {
"extends": "gemini-2.5-flash-base",
"extends": "gemini-3-flash-base",
"modelConfig": {}
},
"loop-detection-double-check": {
"extends": "base",
"modelConfig": {
"model": "gemini-2.5-pro"
"model": "gemini-3-pro-preview"
}
},
"llm-edit-fixer": {
"extends": "gemini-2.5-flash-base",
"extends": "gemini-3-flash-base",
"modelConfig": {}
},
"next-speaker-checker": {
"extends": "gemini-2.5-flash-base",
"extends": "gemini-3-flash-base",
"modelConfig": {}
},
"chat-compression-3-pro": {
Expand Down Expand Up @@ -574,7 +580,7 @@ their corresponding top-level category object in your `settings.json` file.
},
"chat-compression-default": {
"modelConfig": {
"model": "gemini-2.5-pro"
"model": "gemini-3-pro-preview"
}
}
}
Expand Down
6 changes: 3 additions & 3 deletions packages/core/src/availability/fallbackIntegration.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,7 @@ describe('Fallback Integration', () => {
);
});

it('should NOT fallback if config is NOT in AUTO mode', () => {
it('should fallback for Gemini 3 models even if config is NOT in AUTO mode', () => {
// 1. Config is explicitly set to Pro, not Auto
vi.spyOn(config, 'getModel').mockReturnValue(PREVIEW_GEMINI_MODEL);

Expand All @@ -71,7 +71,7 @@ describe('Fallback Integration', () => {
// 4. Apply model selection
const result = applyModelSelection(config, { model: requestedModel });

// 5. Expect it to stay on Pro (because single model chain)
expect(result.model).toBe(PREVIEW_GEMINI_MODEL);
// 5. Expect it to fallback to Flash (because Gemini 3 uses PREVIEW_CHAIN)
expect(result.model).toBe(PREVIEW_GEMINI_FLASH_MODEL);
});
});
13 changes: 13 additions & 0 deletions packages/core/src/availability/policyHelpers.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,19 @@ describe('policyHelpers', () => {
expect(chain[0]?.model).toBe('gemini-2.5-flash');
expect(chain[1]?.model).toBe('gemini-2.5-pro');
});

it('proactively returns Gemini 2.5 chain if Gemini 3 requested but user lacks access', () => {
const config = createMockConfig({
getModel: () => 'auto-gemini-3',
getHasAccessToPreviewModel: () => false,
});
const chain = resolvePolicyChain(config);

// Should downgrade to [Pro 2.5, Flash 2.5]
expect(chain).toHaveLength(2);
expect(chain[0]?.model).toBe('gemini-2.5-pro');
expect(chain[1]?.model).toBe('gemini-2.5-flash');
});
});

describe('buildFallbackPolicyContext', () => {
Expand Down
32 changes: 24 additions & 8 deletions packages/core/src/availability/policyHelpers.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ import {
DEFAULT_GEMINI_MODEL,
PREVIEW_GEMINI_MODEL_AUTO,
isAutoModel,
isGemini3Model,
resolveModel,
} from '../config/models.js';
import type { ModelSelectionResult } from './modelAvailabilityService.js';
Expand All @@ -46,17 +47,32 @@ export function resolvePolicyChain(
const resolvedModel = resolveModel(modelFromConfig);
const isAutoPreferred = preferredModel ? isAutoModel(preferredModel) : false;
const isAutoConfigured = isAutoModel(configuredModel);
const hasAccessToPreview = config.getHasAccessToPreviewModel?.() ?? true;

if (resolvedModel === DEFAULT_GEMINI_FLASH_LITE_MODEL) {
chain = getFlashLitePolicyChain();
} else if (isAutoPreferred || isAutoConfigured) {
const previewEnabled =
preferredModel === PREVIEW_GEMINI_MODEL_AUTO ||
configuredModel === PREVIEW_GEMINI_MODEL_AUTO;
chain = getModelPolicyChain({
previewEnabled,
userTier: config.getUserTier(),
});
} else if (
isGemini3Model(resolvedModel) ||
isAutoPreferred ||
isAutoConfigured
) {
if (hasAccessToPreview) {
const previewEnabled =
isGemini3Model(resolvedModel) ||
preferredModel === PREVIEW_GEMINI_MODEL_AUTO ||
configuredModel === PREVIEW_GEMINI_MODEL_AUTO;
chain = getModelPolicyChain({
previewEnabled,
userTier: config.getUserTier(),
});
} else {
// User requested Gemini 3 but has no access. Proactively downgrade
// to the stable Gemini 2.5 chain.
return getModelPolicyChain({
previewEnabled: false,
userTier: config.getUserTier(),
});
}
} else {
chain = createSingleModelChain(modelFromConfig);
}
Expand Down
22 changes: 14 additions & 8 deletions packages/core/src/config/defaultModelConfigs.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,12 @@ export const DEFAULT_MODEL_CONFIGS: ModelConfigServiceConfig = {
model: 'gemini-2.5-flash',
},
},
'gemini-3-flash-base': {
extends: 'base',
modelConfig: {
model: 'gemini-3-flash-preview',
},
},
classifier: {
extends: 'base',
modelConfig: {
Expand Down Expand Up @@ -151,15 +157,15 @@ export const DEFAULT_MODEL_CONFIGS: ModelConfigServiceConfig = {
},
},
'web-search': {
extends: 'gemini-2.5-flash-base',
extends: 'gemini-3-flash-base',
modelConfig: {
generateContentConfig: {
tools: [{ googleSearch: {} }],
},
},
},
'web-fetch': {
extends: 'gemini-2.5-flash-base',
extends: 'gemini-3-flash-base',
modelConfig: {
generateContentConfig: {
tools: [{ urlContext: {} }],
Expand All @@ -168,25 +174,25 @@ export const DEFAULT_MODEL_CONFIGS: ModelConfigServiceConfig = {
},
// TODO(joshualitt): During cleanup, make modelConfig optional.
'web-fetch-fallback': {
extends: 'gemini-2.5-flash-base',
extends: 'gemini-3-flash-base',
modelConfig: {},
},
'loop-detection': {
extends: 'gemini-2.5-flash-base',
extends: 'gemini-3-flash-base',
modelConfig: {},
},
'loop-detection-double-check': {
extends: 'base',
modelConfig: {
model: 'gemini-2.5-pro',
model: 'gemini-3-pro-preview',
},
},
'llm-edit-fixer': {
extends: 'gemini-2.5-flash-base',
extends: 'gemini-3-flash-base',
modelConfig: {},
},
'next-speaker-checker': {
extends: 'gemini-2.5-flash-base',
extends: 'gemini-3-flash-base',
modelConfig: {},
},
'chat-compression-3-pro': {
Expand Down Expand Up @@ -216,7 +222,7 @@ export const DEFAULT_MODEL_CONFIGS: ModelConfigServiceConfig = {
},
'chat-compression-default': {
modelConfig: {
model: 'gemini-2.5-pro',
model: 'gemini-3-pro-preview',
},
},
},
Expand Down
23 changes: 15 additions & 8 deletions packages/core/src/services/test-data/resolved-aliases-retry.golden.json
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,13 @@
"topP": 1
}
},
"gemini-3-flash-base": {
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"classifier": {
"model": "gemini-2.5-flash-lite",
"generateContentConfig": {
Expand Down Expand Up @@ -153,7 +160,7 @@
}
},
"web-search": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1,
Expand All @@ -165,7 +172,7 @@
}
},
"web-fetch": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1,
Expand All @@ -177,35 +184,35 @@
}
},
"web-fetch-fallback": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"loop-detection": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"loop-detection-double-check": {
"model": "gemini-2.5-pro",
"model": "gemini-3-pro-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"llm-edit-fixer": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"next-speaker-checker": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
Expand All @@ -232,7 +239,7 @@
"generateContentConfig": {}
},
"chat-compression-default": {
"model": "gemini-2.5-pro",
"model": "gemini-3-pro-preview",
"generateContentConfig": {}
}
}
23 changes: 15 additions & 8 deletions packages/core/src/services/test-data/resolved-aliases.golden.json
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,13 @@
"topP": 1
}
},
"gemini-3-flash-base": {
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"classifier": {
"model": "gemini-2.5-flash-lite",
"generateContentConfig": {
Expand Down Expand Up @@ -153,7 +160,7 @@
}
},
"web-search": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1,
Expand All @@ -165,7 +172,7 @@
}
},
"web-fetch": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1,
Expand All @@ -177,35 +184,35 @@
}
},
"web-fetch-fallback": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"loop-detection": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"loop-detection-double-check": {
"model": "gemini-2.5-pro",
"model": "gemini-3-pro-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"llm-edit-fixer": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
}
},
"next-speaker-checker": {
"model": "gemini-2.5-flash",
"model": "gemini-3-flash-preview",
"generateContentConfig": {
"temperature": 0,
"topP": 1
Expand All @@ -232,7 +239,7 @@
"generateContentConfig": {}
},
"chat-compression-default": {
"model": "gemini-2.5-pro",
"model": "gemini-3-pro-preview",
"generateContentConfig": {}
}
}
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