gemini-3.5-flash — Available — shutdown May 19, 2027 or later
For gemini-3.5-flash, provider is Google (Vertex AI); lifecycle status is Available; shutdown / retirement date is May 19, 2027 or later, recorded from its source on 2026-09-16.
- Provider
- Google (Vertex AI) our reading
- Model ID / API name
- gemini-3.5-flash verified
- Lifecycle status
- Available
- Release date
- May 19, 2026 verified
- Shutdown / retirement date
- May 19, 2027 or later verified
- Platform / deployment scope
- Gemini Developer API (ai.google.dev) per ai.google.dev
- Recommended replacement
- Gemini 3.8 Flash per github.blog
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
gemini-3.5-flash | May 19, 2026 | May 19, 2027 or later | |
— cloud.google.com, retrieved 2026-09-16
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Release date
Model ID | Release date | Retirement date | Replacement model | gemini-3.5-flash-lite | July 21, 2026 | July 21, 2027 or later | | gemini-3.5-flash | May 19, 2026 | May 19, 2027 or later | |
— all from cloud.google.com, retrieved 2026-09-16
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Provider
cloud.google.com says provider is Google (Vertex AI), as of 2026-09-16.
gemini-3.5-flash | May 19, 2026 | May 19, 2027 or later | |
https://cloud.google.com/vertex-ai/generative-ai/docs/learn/model-versioning
ai.google.dev says provider is Google (Gemini Developer API), as of 2026-09-16.
gemini-3.5-flash | May 19, 2026 | No shutdown date announced | |
https://ai.google.dev/gemini-api/docs/deprecations
github.blog says provider is GitHub Copilot, as of 2026-09-09.
Model | Deprecation date | Suggested alternative | Gemini 3.5 Flash | 2026-10-02 | Gemini 3.8 Flash |
https://github.blog/changelog/2026-09-03-upcoming-deprecation-of-selected-github-copilot-models
Shutdown / retirement date
cloud.google.com says shutdown / retirement date is May 19, 2027 or later, as of 2026-09-16.
gemini-3.5-flash | May 19, 2026 | May 19, 2027 or later | |
https://cloud.google.com/vertex-ai/generative-ai/docs/learn/model-versioning
ai.google.dev says shutdown / retirement date is No shutdown date announced, as of 2026-09-16.
gemini-3.5-flash | May 19, 2026 | No shutdown date announced | |
https://ai.google.dev/gemini-api/docs/deprecations
github.blog says shutdown / retirement date is 2026-10-02, as of 2026-09-09.
Model | Deprecation date | Suggested alternative | Gemini 3.5 Flash | 2026-10-02 | Gemini 3.8 Flash |
https://github.blog/changelog/2026-09-03-upcoming-deprecation-of-selected-github-copilot-models
Sources
- cloud.google.comhttps://cloud.google.com/vertex-ai/generative-ai/docs/learn/model-versioning
- ai.google.devhttps://ai.google.dev/gemini-api/docs/deprecations
- github.bloghttps://github.blog/changelog/2026-09-03-upcoming-deprecation-of-selected-github-copilot-models