feat(core): update internal utility models to Gemini 3 by SandyTao520 · Pull Request #18773 · google-gemini/gemini-cli

SandyTao520 · 2026-02-10T22:03:26Z

TLDR

This PR updates several internal utility model aliases to use Gemini 3 models instead of Gemini 2.5. This includes loop detection, web search, and web fetch tools.

Dive Deeper

Added a new internal base alias gemini-3-flash-base pointing to gemini-3-flash-preview.
Transitioned web-search, web-fetch, and web-fetch-fallback to use Gemini 3 Flash.
Updated the tiered loop detection system to use Gemini 3 models: gemini-3-flash-preview for the initial check and gemini-3-pro-preview for the double-check.
This alignment ensures that background utilities leverage the latest model generation while the project transitions to Gemini 3.

Reviewer Test Plan

Reviewers can verify the change by inspecting the packages/core/src/config/defaultModelConfigs.ts file and ensuring the aliases point to the correct Gemini 3 preview models. To exercise the changes, one can run the CLI with debug logging enabled and perform actions that trigger these utilities (e.g., a search query or a long conversation that might trigger loop detection).

Testing Matrix

	🍏	🪟	🐧
npm run	✅	❓	❓
npx	✅	❓	❓
Docker	❓	❓	❓
Podman	❓	-	-
Seatbelt	❓	-	-

Linked issues / bugs

https://github.com/google-gemini/maintainers-gemini-cli/issues/1284

gemini-cli · 2026-02-10T22:03:37Z

Hi @SandyTao520, thank you so much for your contribution to Gemini CLI! We really appreciate the time and effort you've put into this.

We're making some updates to our contribution process to improve how we track and review changes. Please take a moment to review our recent discussion post: Improving Our Contribution Process & Introducing New Guidelines.

Key Update: Starting January 26, 2026, the Gemini CLI project will require all pull requests to be associated with an existing issue. Any pull requests not linked to an issue by that date will be automatically closed.

Thank you for your understanding and for being a part of our community!

gemini-cli · 2026-02-10T22:03:38Z

Hi there! Thank you for your contribution to Gemini CLI.

To improve our contribution process and better track changes, we now require all pull requests to be associated with an existing issue, as announced in our recent discussion and as detailed in our CONTRIBUTING.md.

This pull request is being closed because it is not currently linked to an issue. Once you have updated the description of this PR to link an issue (e.g., by adding Fixes #123 or Related to #123), it will be automatically reopened.

How to link an issue:
Add a keyword followed by the issue number (e.g., Fixes #123) in the description of your pull request. For more details on supported keywords and how linking works, please refer to the GitHub Documentation on linking pull requests to issues.

Thank you for your understanding and for being a part of our community!

gemini-code-assist · 2026-02-10T22:03:38Z

Summary of Changes

Hello @SandyTao520, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on modernizing the project's internal utility models by migrating them to the latest Gemini 3 generation. This strategic update ensures that core functionalities like web searching, content fetching, and loop detection benefit from enhanced performance and capabilities provided by the newest model architecture, aligning the project with cutting-edge AI advancements.

Highlights

Model Alias Update: Updated several internal utility model aliases to utilize Gemini 3 models instead of Gemini 2.5, affecting loop detection, web search, and web fetch tools.
New Base Alias: Added a new internal base alias, 'gemini-3-flash-base', which points to 'gemini-3-flash-preview'.
Web Tool Transitions: Transitioned 'web-search', 'web-fetch', and 'web-fetch-fallback' utilities to leverage the newly introduced Gemini 3 Flash models.
Loop Detection Enhancement: Updated the tiered loop detection system to incorporate Gemini 3 models, using 'gemini-3-flash-preview' for initial checks and 'gemini-3-pro-preview' for double-checks.

Changelog

packages/core/src/config/defaultModelConfigs.ts
- Added a new model configuration for 'gemini-3-flash-base' pointing to 'gemini-3-flash-preview'.
- Updated 'web-search' to extend from 'gemini-3-flash-base'.
- Updated 'web-fetch' to extend from 'gemini-3-flash-base'.
- Updated 'web-fetch-fallback' to extend from 'gemini-3-flash-base'.
- Modified 'loop-detection' to use 'gemini-3-flash-preview' directly.
- Updated 'loop-detection-double-check' to use 'gemini-3-pro-preview'.

Activity

No human activity has occurred on this pull request yet.

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Code Review

The pull request successfully updates internal utility model aliases to Gemini 3 models, enhancing the capabilities of web search, web fetch, and loop detection. The changes are well-implemented and align with the project's transition to the latest model generation. The golden tests and integration tests appear to cover the changes adequately. No critical issues were found.

github-actions · 2026-02-10T22:18:19Z

Size Change: +468 B (0%)

Total Size: 24.3 MB

ℹ️ View Unchanged

Filename	Size	Change
`./bundle/gemini.js`	24.3 MB	+468 B (0%)
`./bundle/sandbox-macos-permissive-closed.sb`	1.03 kB	0 B
`./bundle/sandbox-macos-permissive-open.sb`	890 B	0 B
`./bundle/sandbox-macos-permissive-proxied.sb`	1.31 kB	0 B
`./bundle/sandbox-macos-restrictive-closed.sb`	3.29 kB	0 B
`./bundle/sandbox-macos-restrictive-open.sb`	3.36 kB	0 B
`./bundle/sandbox-macos-restrictive-proxied.sb`	3.56 kB	0 B

_{compressed-size-action}

packages/core/src/availability/policyHelpers.ts

adamfweidman

LGTM, one nit

…ity models

…t unrelated package-lock changes

…ini/gemini-cli (#37) * fix(cli): resolve double rendering in shpool and address vscode lint warnings (google-gemini#18704) * feat(plan): document and validate Plan Mode policy overrides (google-gemini#18825) * Fix pressing any key to exit select mode. (google-gemini#18421) * fix(cli): update F12 behavior to only open drawer if browser fails (google-gemini#18829) * feat(plan): allow skills to be enabled in plan mode (google-gemini#18817) Co-authored-by: Jerop Kipruto <jerop@google.com> * docs(plan): add documentation for plan mode tools (google-gemini#18827) * Remove experimental note in extension settings docs (google-gemini#18822) * Update prompt and grep tool definition to limit context size (google-gemini#18780) * docs(plan): add `ask_user` tool documentation (google-gemini#18830) * Revert unintended credentials exposure (google-gemini#18840) * feat(core): update internal utility models to Gemini 3 (google-gemini#18773) * feat(a2a): add value-resolver for auth credential resolution (google-gemini#18653) * Removed getPlainTextLength (google-gemini#18848) * More grep prompt tweaks (google-gemini#18846) * refactor(cli): Reactive useSettingsStore hook (google-gemini#14915) * fix(mcp): Ensure that stdio MCP server execution has the `GEMINI_CLI=1` env variable populated. (google-gemini#18832) * fix(core): improve headless mode detection for flags and query args (google-gemini#18855) * refactor(cli): simplify UI and remove legacy inline tool confirmation logic (google-gemini#18566) * feat(cli): deprecate --allowed-tools and excludeTools in favor of policy engine (google-gemini#18508) * fix(workflows): improve maintainer detection for automated PR actions (google-gemini#18869) * refactor(cli): consolidate useToolScheduler and delete legacy implementation (google-gemini#18567) * Update changelog for v0.28.0 and v0.29.0-preview0 (google-gemini#18819) * fix(core): ensure sub-agents are registered regardless of tools.allowed (google-gemini#18870) --------- Co-authored-by: Brad Dux <959674+braddux@users.noreply.github.com> Co-authored-by: Jerop Kipruto <jerop@google.com> Co-authored-by: Jacob Richman <jacob314@gmail.com> Co-authored-by: Sandy Tao <sandytao520@icloud.com> Co-authored-by: Adib234 <30782825+Adib234@users.noreply.github.com> Co-authored-by: christine betts <chrstn@uw.edu> Co-authored-by: Christian Gunderman <gundermanc@gmail.com> Co-authored-by: Adam Weidman <65992621+adamfweidman@users.noreply.github.com> Co-authored-by: Dev Randalpura <devrandalpura@google.com> Co-authored-by: Pyush Sinha <pyushsinha20@gmail.com> Co-authored-by: Richie Foreman <richie.foreman@gmail.com> Co-authored-by: Gal Zahavi <38544478+galz10@users.noreply.github.com> Co-authored-by: Abhi <43648792+abhipatel12@users.noreply.github.com> Co-authored-by: Abhijit Balaji <abhijitbalaji@google.com> Co-authored-by: Bryan Morgan <bryanmorgan@google.com> Co-authored-by: g-samroberts <158088236+g-samroberts@users.noreply.github.com> Co-authored-by: matt korwel <matt.korwel@gmail.com>

SandyTao520 requested a review from a team as a code owner February 10, 2026 22:03

gemini-cli bot closed this Feb 10, 2026

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SandyTao520 reopened this Feb 10, 2026

gemini-cli bot added the status/need-issue Pull requests that need to have an associated issue. label Feb 10, 2026

SandyTao520 requested review from a team as code owners February 11, 2026 06:43

sehoon38 reviewed Feb 11, 2026

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packages/core/src/availability/policyHelpers.ts Outdated Show resolved Hide resolved

adamfweidman reviewed Feb 11, 2026

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adamfweidman approved these changes Feb 11, 2026

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SandyTao520 added 7 commits February 11, 2026 12:01

feat(core): update loop detection and web tools to Gemini 3 models

fcf3f6d

test(core): update golden files for Gemini 3 utility models

5840cbc

feat(core): implement proactive Gemini 3 access check and update util…

4c1d9ff

…ity models

style(core): apply prettier formatting

f6929ae

docs: regenerate settings schema and docs for model updates

58ff709

fix: use isGemini3Model helper, align loop-detection alias, and rever…

554d98a

…t unrelated package-lock changes

docs: regenerate settings schema for model updates

69231b8

SandyTao520 force-pushed the st/feat/upgrade-utility-models-to-gemini-3 branch from 07b666f to 69231b8 Compare February 11, 2026 20:04

SandyTao520 enabled auto-merge February 11, 2026 20:12

SandyTao520 added this pull request to the merge queue Feb 11, 2026

Merged via the queue into main with commit bfa791e Feb 11, 2026
26 of 27 checks passed

SandyTao520 deleted the st/feat/upgrade-utility-models-to-gemini-3 branch February 11, 2026 20:33

gemini-code-assist bot mentioned this pull request Feb 18, 2026

Changelog for v0.30.0-preview.0 #19364

Merged

dhairyashiil mentioned this pull request Feb 23, 2026

Prefer Gemini 3 over hardcoded Gemini 2.5 when available #17487

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

feat(core): update internal utility models to Gemini 3#18773
SandyTao520 merged 7 commits intomainfrom
st/feat/upgrade-utility-models-to-gemini-3

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SandyTao520 commented Feb 10, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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TLDR

Dive Deeper

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Testing Matrix

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Summary of Changes

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SandyTao520 commented Feb 10, 2026 •

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