Managed agents and 3.6 Flash arrive in the Gemini API
Google published a blog post on July 28 announcing updates to the Gemini API, headlined by the addition of managed agents and a Gemini 3.6 Flash model, alongside new developer hooks. The post, titled "Gemini API Managed Agents: 3.6 Flash, hooks, and more," presents the new components as the latest additions to the platform's tooling for developers building on Gemini.
Gemini 3.5 Pro, announced at I/O, remains missing
A Mashable article published the same day asks where Gemini 3.5 Pro is, noting that the model Google unveiled at its I/O developer conference has not been released. The piece treats the absent flagship as a notable gap between what Google showcased on stage and what has actually reached users through the Gemini API.
A split version lineup
Read together, the two reports describe a Gemini family in which a 3.5 Pro tier was publicly named at I/O but has not shipped, while a 3.6 Flash tier is now being expanded with managed-agent and hook features in the API. The two publications do not reconcile this naming gap, leaving the version structure of Gemini less coherent in public reporting than Google's roadmap might suggest.
Outstanding questions
Neither source supplies a release date for Gemini 3.5 Pro, and the Google blog excerpt does not detail how managed agents or hooks differ from previously available Gemini API capabilities. Developers awaiting 3.5 Pro access have no confirmed timeline in the supplied coverage, and the next verifiable signal would be any subsequent Google post or I/O follow-up addressing the missing flagship.
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