AI: Remove Chrome AI built-in API experiment code by vianasw · Pull Request #46896 · Automattic/jetpack

vianasw · 2026-02-02T15:04:46Z

Proposed changes:

The Chrome AI A/B test experiment (calypso_jetpack_ai_gemini_api_202503_v2) is complete. This PR removes all related code across the monorepo:

Delete the entire chrome-ai/ directory from ai-client (ChromeAIFactory, ChromeAISuggestionsEventSource, availability checker)
Remove AI_MODEL_GEMINI_NANO constant and global Window type declarations (LanguageDetector, Translator, Summarizer)
Simplify useAiSuggestions hook to always use askQuestion directly instead of conditionally routing through Chrome AI
Remove skipRequestCount parameter from onDone/onAllErrors callbacks — consumers now always call increaseRequestsCount()
Remove ChromeAiTokens type and mapping from shared-extension-utils
Remove Chrome AI token script registration (jetpack-chrome-ai-token) from class.jetpack-gutenberg.php
Remove Chrome AI tokens retrieval from class-jetpack-ai-helper.php

Other information:

Have you written new tests for your changes, if applicable?
Have you checked the E2E test CI results, and verified that your changes do not break them?
Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

Does this pull request change what data or activity we track or use?

No. This removes tracking/experiment code; no new data is collected.

Testing instructions:

Verify that AI Assistant features (block, inline text extension, post excerpt generation) continue to work normally without Chrome AI
Confirm the jetpack-chrome-ai-token script is no longer enqueued in the editor
Verify no JS console errors related to Chrome AI or Gemini Nano appear

🤖 Generated with Claude Code

The Chrome AI A/B test experiment (calypso_jetpack_ai_gemini_api_202503_v2) is complete. This removes all related code: - Delete chrome-ai directory (factory, suggestions, availability) - Remove AI_MODEL_GEMINI_NANO constant and global Window type declarations - Simplify useAiSuggestions hook to always use askQuestion - Remove skipRequestCount parameter from onDone/onAllErrors callbacks - Remove ChromeAiTokens type and mapping from shared-extension-utils - Remove Chrome AI token script registration and PHP backend code Co-Authored-By: Claude Opus 4.5 <[email protected]>

github-actions · 2026-02-02T15:05:38Z

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack or WordPress.com Site Helper), and enable the remove/chrome-ai-experiment-code branch.
To test on Simple, run the following command on your sandbox:

bin/jetpack-downloader test jetpack remove/chrome-ai-experiment-code

bin/jetpack-downloader test jetpack-mu-wpcom-plugin remove/chrome-ai-experiment-code

Interested in more tips and information?

In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
Read more about our development workflow here: PCYsg-eg0-p2
Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

github-actions · 2026-02-02T15:05:56Z

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

✅ Include a description of your PR changes.
✅ Add a "[Status]" label (In Progress, Needs Review, ...).
✅ Add testing instructions.
✅ Specify whether this PR includes any changes to data or privacy.
✅ Add changelog entries to affected projects

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

Follow this PR Review Process:

Ensure all required checks appearing at the bottom of this PR are passing.
Make sure to test your changes on all platforms that it applies to. You're responsible for the quality of the code you ship.
You can use GitHub's Reviewers functionality to request a review.
When it's reviewed and merged, you will be pinged in Slack to deploy the changes to WordPress.com simple once the build is done.

If you have questions about anything, reach out in #jetpack-developers for guidance!

Jetpack plugin:

The Jetpack plugin has different release cadences depending on the platform:

WordPress.com Simple releases happen as soon as you deploy your changes after merging this PR (PCYsg-Jjm-p2).
WoA releases happen weekly.
Releases to self-hosted sites happen monthly:
- Scheduled release: February 3, 2026
- Code freeze: February 3, 2026

If you have any questions about the release process, please ask in the #jetpack-releases channel on Slack.

Copilot

Pull request overview

This PR removes all code related to the Chrome AI built-in API experiment (calypso_jetpack_ai_gemini_api_202503_v2) after the A/B test has been completed. The cleanup is comprehensive and spans across multiple packages in the monorepo.

Changes:

Delete the entire chrome-ai/ directory with factory, suggestions, availability checker, and type declarations
Remove skipRequestCount parameter from AI suggestion callbacks, simplifying the API
Remove Chrome AI token script registration and retrieval from backend PHP files

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
projects/js-packages/ai-client/src/chrome-ai/suggestions.ts	Deleted Chrome AI suggestions event source implementation
projects/js-packages/ai-client/src/chrome-ai/index.ts	Deleted Chrome AI module exports
projects/js-packages/ai-client/src/chrome-ai/get-availability.ts	Deleted Chrome AI availability checker and ExPlat integration
projects/js-packages/ai-client/src/chrome-ai/factory.ts	Deleted Chrome AI factory that routed translation/summarization requests
projects/js-packages/ai-client/src/types.ts	Remove AI_MODEL_GEMINI_NANO constant and global Window type declarations for Chrome AI APIs
projects/js-packages/ai-client/src/index.ts	Remove Chrome AI exports from package entry point
projects/js-packages/ai-client/src/hooks/use-ai-suggestions/index.ts	Simplify hook to always use askQuestion, remove conditional Chrome AI routing and skipRequestCount parameter
projects/plugins/jetpack/extensions/plugins/ai-content-lens/extend/ai-post-excerpt/index.tsx	Update callback signatures to remove skipRequestCount parameter
projects/plugins/jetpack/extensions/blocks/ai-assistant/hooks/use-ai-assistant/index.js	Update onDone callback to remove skipRequestCount parameter
projects/plugins/jetpack/extensions/blocks/ai-assistant/extensions/text-blocks/with-ai-text-extension.tsx	Update onDone callback to remove skipRequestCount parameter
projects/plugins/jetpack/extensions/blocks/ai-assistant/edit.js	Update onSuggestionDone callback to remove skipRequestCount parameter
projects/plugins/jetpack/class.jetpack-gutenberg.php	Remove Chrome AI token script registration
projects/plugins/jetpack/_inc/lib/class-jetpack-ai-helper.php	Remove Chrome AI tokens retrieval from AI assistance feature
projects/js-packages/shared-extension-utils/src/store/wordpress-com/types.ts	Remove ChromeAiTokens type definition
projects/js-packages/shared-extension-utils/src/store/wordpress-com/actions.ts	Remove chromeAiTokens mapping
projects/plugins/jetpack/changelog/remove-chrome-ai-experiment-code	Add changelog entry for Jetpack plugin
projects/js-packages/shared-extension-utils/changelog/remove-chrome-ai-experiment-code	Add changelog entry for shared-extension-utils package
projects/js-packages/ai-client/changelog/remove-chrome-ai-experiment-code	Add changelog entry for ai-client package

Copilot · 2026-02-02T15:08:15Z

projects/js-packages/shared-extension-utils/changelog/remove-chrome-ai-experiment-code

+Significance: patch
+Type: removed
+
+Removed Chrome AI tokens type and mapping.


The changelog entry should start with a capital letter and use an imperative mood. Change "Removed" to "Remove" to match the convention specified in the coding guidelines.

Copilot · 2026-02-02T15:08:16Z

projects/js-packages/ai-client/changelog/remove-chrome-ai-experiment-code

+Significance: minor
+Type: removed
+
+Removed Chrome AI built-in API integration code.


The changelog entry should start with a capital letter and use an imperative mood. Change "Removed" to "Remove" to match the convention specified in the coding guidelines.

Copilot · 2026-02-02T15:08:16Z

projects/plugins/jetpack/changelog/remove-chrome-ai-experiment-code

+Significance: patch
+Type: other
+
+AI: removed Chrome AI built-in API experiment code.


The changelog entry should use an imperative mood. Change "removed" to "Remove" to match the convention specified in the coding guidelines.

jp-launch-control · 2026-02-02T15:21:03Z

Code Coverage Summary

Coverage changed in 7 files. Only the first 5 are listed here.

File	Coverage	Δ%	Δ Uncovered
projects/js-packages/ai-client/src/types.ts	0/20 (0.00%)	0.00%	-1 💚
projects/plugins/jetpack/extensions/blocks/ai-assistant/edit.js	0/138 (0.00%)	0.00%	-1 💚
projects/plugins/jetpack/extensions/blocks/ai-assistant/extensions/text-blocks/with-ai-text-extension.tsx	0/181 (0.00%)	0.00%	-1 💚
projects/plugins/jetpack/extensions/plugins/ai-content-lens/extend/ai-post-excerpt/index.tsx	0/71 (0.00%)	0.00%	-2 💚
projects/js-packages/ai-client/src/hooks/use-ai-suggestions/index.ts	0/91 (0.00%)	0.00%	-5 💚

Full summary · PHP report · JS report

CGastrell · 2026-02-04T15:24:01Z

projects/plugins/jetpack/class.jetpack-gutenberg.php

 		Connection_Initial_State::render_script( 'jetpack-blocks-editor' );
-
-		// Register and enqueue the Jetpack Chrome AI token script
-		wp_register_script(


I think we need another removal PR for these, right?

dhasilva

LGTM. Tests well. As Christian noted, another PR is needed to remove the token script file.

Copilot AI review requested due to automatic review settings February 2, 2026 15:04

vianasw added the [Status] Needs Review This PR is ready for review. label Feb 2, 2026

vianasw self-assigned this Feb 2, 2026

Copilot started reviewing on behalf of vianasw February 2, 2026 15:05 View session

github-actions bot added [Block] AI Assistant [Extension] AI Content Lens [JS Package] AI Client [JS Package] Shared Extension Utils [Plugin] Jetpack Issues about the Jetpack plugin. https://wordpress.org/plugins/jetpack/ RNA labels Feb 2, 2026

Copilot AI reviewed Feb 2, 2026

View reviewed changes

simison requested review from CGastrell and dhasilva February 2, 2026 16:05

vianasw requested a review from a team February 2, 2026 16:20

CGastrell reviewed Feb 4, 2026

View reviewed changes

dhasilva approved these changes Feb 4, 2026

View reviewed changes

vianasw merged commit ea946a2 into trunk Feb 4, 2026
198 of 209 checks passed

vianasw deleted the remove/chrome-ai-experiment-code branch February 4, 2026 16:01

github-actions bot removed the [Status] Needs Review This PR is ready for review. label Feb 4, 2026

github-actions bot added this to the jetpack/15.6 milestone Feb 4, 2026

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AI: Remove Chrome AI built-in API experiment code#46896

AI: Remove Chrome AI built-in API experiment code#46896
vianasw merged 1 commit intotrunkfrom
remove/chrome-ai-experiment-code

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Proposed changes:

Other information:

Jetpack product discussion

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Testing instructions:

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