genkit

v1.35.0 Breaking

This release includes 1 breaking change for platform teams planning a safe upgrade.

Published 13d LLM Frameworks

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editorial:auto 13d

Release v1.35.0 updates JavaScript components and the Google Generative AI plugin with bug‑fixes, new features, refactors, and deprecations.

Why it matters: Patch to v1.35.0 immediately if using compat-oai; test Gemini 3.5 support in dev before production rollout.

Summary

AI summary

Updates js, plugins, and js/plugins/google-genai across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	Improves debug trace output in Google Generative AI plugin. Improves debug trace output in Google Generative AI plugin. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Adds support for Gemini 3.5 Flash model in plugin. Adds support for Gemini 3.5 Flash model in plugin. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Adds Gemini 3.5 support via official Gemini API. Adds Gemini 3.5 support via official Gemini API. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Honors Retry-After header; prevents retrying AbortError and ToolInterruptError. Honors Retry-After header; prevents retrying AbortError and ToolInterruptError. Source: llm_adapter@2026-05-21 Confidence: low	—
Deprecation	Medium	Deprecates built-in retry/fallback middleware in favor of separate package. Deprecates built-in retry/fallback middleware in favor of separate package. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Fixes incorrect API key references in TypeScript documentation. Fixes incorrect API key references in TypeScript documentation. Source: llm_adapter@2026-05-21 Confidence: high	—
Refactor	Medium	Adds JSDoc comments to exported types and project README. Adds JSDoc comments to exported types and project README. Source: llm_adapter@2026-05-21 Confidence: low	—

Full changelog

What's Changed

fix(compat-oai): refer to proper api keys in tsdoc by @MichaelDoyle in https://github.com/genkit-ai/genkit/pull/5257
feat(js/plugins/google-genai): Better debug traces by @ifielker in https://github.com/genkit-ai/genkit/pull/5335
feat(js/plugins/google-genai): support for Gemini 3.5 Flash by @ifielker in https://github.com/genkit-ai/genkit/pull/5347
docs(js): add JSDoc comments to exported types/schemas and project README by @pavelgj in https://github.com/genkit-ai/genkit/pull/5348
feat(js/plugins/google-genai): Support for Gemini 3.5 (Gemini API) by @ifielker in https://github.com/genkit-ai/genkit/pull/5350
feat(js): deprecate genkit/model/middleware retry and fallback middleware in favor of @genkit-ai/middleware by @pavelgj in https://github.com/genkit-ai/genkit/pull/5344
feat(js): honor Retry-After header & never retry AbortError/ToolInterruptError by @pavelgj in https://github.com/genkit-ai/genkit/pull/5343

New Contributors

@Anthony-Bible made their first contribution in https://github.com/genkit-ai/genkit/pull/5255

Full Changelog: https://github.com/genkit-ai/genkit/compare/v1.34.0...v1.35.0

Breaking Changes

Deprecated genkit/model/middleware retry and fallback middleware; use @genkit-ai/middleware instead.

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About genkit

Open-source framework for building AI-powered apps in JavaScript, Go, and Python, built and used in production by Google

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