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Google AI (Gemini API) changed its API changelog

API changeloghttps://ai.google.dev/gemini-api/docs/changelog

ChangeAPI changelog

Gemini 3.8 Flash released as GA; Lyria 3.5 and agentic video understanding now in preview; three Imagen and Veo models deprecated with shutdown dates.

Gemini 3.7 Flash is now available. Try it out.
Gemini 3.8 Flash is now available. Try it out. SEPTEMBER 3, 2026 * Lyria 3.5 in public preview: Released the next generation of Google's music generation model: lyria-3.5: Full-length song generation... SEPTEMBER 2, 2026 * Gemini 3.8 Flash generally available (GA): Released gemini-3.8-flash... SEPTEMBER 1, 2026 * Agentic video understanding: Released agentic video understanding for Gemini 3.7 Flash, 3.6 Flash, and 3.5 Flash-Lite...
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-Gemini 3.7 Flash is now available. Try it out.
+Gemini 3.8 Flash is now available. Try it out.
  * Home
  * 
    Gemini API
  * 
@@ -40,8 +40,28 @@
 RELEASE NOTES
 
 This page documents updates to the Gemini API.
 
+SEPTEMBER 3, 2026
+
+ * Lyria 3.5 in public preview: Released the next generation of Google's music generation model:
+   
+   * lyria-3.5: Full-length song generation with improved musical coherence, natural vocals, and fine-grained duration and structural control.
+   
+   The model supports text and image inputs and generates high-fidelity 44.1 kHz stereo audio. See the Music generation guide for details and code samples.
+
+SEPTEMBER 2, 2026
+
+ * Gemini 3.8 Flash generally available (GA): Released gemini-3.8-flash, our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows.
+   
+   To get started, see the Gemini 3.8 Flash model page and the Latest model guide.
+
+SEPTEMBER 1, 2026
+
+ * Agentic video understanding: Released agentic video understanding for Gemini 3.7 Flash, 3.6 Flash, and 3.5 Flash-Lite across the Interactions and GenerateContent APIs. The model dynamically navigates video timelines, requesting transcripts, frames, or audio tracks on demand. This approach uses up to 88% fewer tokens for long-form content compared to static processing.
+   
+   To get started, see the Agentic video understanding guide.
+
 AUGUST 27, 2026
 
  * Gemini Omni Flash generally available (GA): Released gemini-omni-1.1-flash, the GA version of our fast, conversational video generation and editing model. This release includes significant new capabilities:
    
@@ -114,24 +134,22 @@
 
  * Deprecation announcement: The following image generation models are being deprecated and will be shut down on August 17, 2026:
    
    * Imagen 4 and Gemini 3 Image models:
-     
      * imagen-4.0-generate-001
      * imagen-4.0-ultra-generate-001
      * imagen-4.0-fast-generate-001
-     
-     To migrate your code to newer stable or preview endpoints, refer to the Gemini deprecations page.
+   
+   To migrate your code to newer stable or preview endpoints, refer to the Gemini deprecations page.
 
  * Deprecation announcement: The following video generation models are being deprecated and will be shut down on June 30, 2026:
    
    * Veo models:
-     
      * veo-2.0-generate-001
      * veo-3.0-generate-001
      * veo-3.0-fast-generate-001
-     
-     Update your integration to either use the Veo 3.1 preview model IDs (veo-3.1-generate-preview, veo-3.1-fast-generate-preview) or the 3.1 GA models available through the Gemini Enterprise Agent Platform to avoid service interruptions.
+   
+   Update your integration to either use the Veo 3.1 preview model IDs (veo-3.1-generate-preview, veo-3.1-fast-generate-preview) or the 3.1 GA models available through the Gemini Enterprise Agent Platform to avoid service interruptions.
 
  * Deprecation announcement: The experimental GMP Contextual View tool (a fixed interface for Grounding with Google Maps outputs) will shut down on June 15, 2026:
 
 JUNE 1, 2026
@@ -973,7 +991,7 @@
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 Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
 
-Last updated 2026-08-27 UTC.
+Last updated 2026-09-04 UTC.
 
-Need to tell us more? [[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-08-27 UTC."],[],[]]
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+Need to tell us more? [[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-09-04 UTC."],[],[]]
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