What's new in Gemini API
The Gemini API changelog, summarized: 15 changes from the last 90 days (9 new, 6 breaking), taken from the official Gemini API changelog. Latest: Gemini API CLI (gemini-api) beta on Oct 27, 2026. Updated 2026-10-29 18:50 UTC.
All recent Gemini API changes
Tuesday
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Gemini APINew
Gemini API CLI (gemini-api) beta
Released the [Gemini API CLI](https://ai.google.dev/gemini-api/docs/cli) (gemini-api), a stateless, zero-dependency command-line client for AI coding agents, scripts, and CI pipelines.
ai.google.dev (official source, opens in a new tab)
Monday
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Gemini APINew
Generate Content API storage on by default
New projects using the Generate Content API (generateContent, streamGenerateContent, and batchGenerateContent) on the paid tier now store requests by default (store=true), matching the Interactions API.
ai.google.dev (official source, opens in a new tab)
Tuesday
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Gemini APINew
Gemini 4 Argon (gemini-4-argon) generally available (GA)
Released Gemini 4 Argon (gemini-4-argon), our most capable model built for complex coding, agentic, math, and science tasks. For API changes, pricing, and migration guidance, see What's new in Gemini 4 Argon.
ai.google.dev (official source, opens in a new tab)
Thursday
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Gemini APIBreaking
Gemini 3.7 Flash deprecation
gemini-3.7-flash is deprecated and has been replaced by gemini-3.8-flash. It is no longer available to select in Google AI Studio, and API requests to gemini-3.7-flash are automatically routed to gemini-3.8-flash.
ai.google.dev (official source, opens in a new tab) -
Gemini APIBreaking
Gemini 3.5 Flash deprecation
gemini-3.5-flash is deprecated and has been replaced by gemini-3.6-flash. It is no longer available to select in Google AI Studio, and API requests to gemini-3.5-flash are automatically routed to gemini-3.6-flash.
ai.google.dev (official source, opens in a new tab) -
Gemini APIBreaking
Deep Research Agent deep-research-pro-preview-12-2025 deprecation
The deep-research-pro-preview-12-2025 agent is deprecated and will be shut down on October 23, 2026. Migrate your requests to one of the newer Deep Research agent versions: deep-research-preview-04-2026: Designed for speed and efficiency,…
ai.google.dev (official source, opens in a new tab)
Tuesday
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Gemini APINew
Gemini Nano Banana 2.1 generally available (GA)
Released Gemini Nano Banana 2.1 (gemini-nano-banana-2.1), the latest high-efficiency image generation and conversational editing model.
ai.google.dev (official source, opens in a new tab) -
Gemini APIBreaking
Deprecation announcement
The gemini-3.1-flash-image model is deprecated (no shutdown date announced). Migrate to gemini-nano-banana-2.1.
ai.google.dev (official source, opens in a new tab)
Tuesday
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Gemini APINew
Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS generally available (GA)
Released our next-generation text-to-speech (TTS) audio models and the Gemini API Voices endpoint (/v1beta/voices): Gemini 3.8 Flash TTS (gemini-3.8-flash-tts): Flagship creative TTS model engineered for studio-grade voice fidelity,…
ai.google.dev (official source, opens in a new tab)
Friday
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Gemini APIBreaking
Gemini 2.5 models access update: To ensure reliable performance for everyone, we are limiting access to the 2.5 models…
Gemini 2.5 models access update: To ensure reliable performance for everyone, we are limiting access to the 2.5 models to users who have actively used them in the past.
ai.google.dev (official source, opens in a new tab)
Thursday
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Gemini APIBreaking
Antigravity Agent 09-2026
Released antigravity-preview-09-2026, which replaces and deprecates antigravity-preview-05-2026. If you run on a remote sandbox (environment: "remote") and read only output_text or model_output steps, update the agent string and nothing…
ai.google.dev (official source, opens in a new tab)
Tuesday
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Gemini APINew
Gemini 3.8 Live and Gemini 3.8 Live Extended Thinking generally available (GA): Released two new audio-to-audio models…
Gemini 3.8 Live and Gemini 3.8 Live Extended Thinking generally available (GA): Released two new audio-to-audio models for real-time voice applications using the Live API: Gemini 3.8 Live (gemini-3.8-live): The default option for most…
ai.google.dev (official source, opens in a new tab)
Thursday
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Gemini APINew
Lyria 3.5 generally available (GA): Released the next generation of Google's music generation model: lyria-3.5:…
Lyria 3.5 generally available (GA): 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.
ai.google.dev (official source, opens in a new tab)
Wednesday
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Gemini APINew
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.
ai.google.dev (official source, opens in a new tab)
Tuesday
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Gemini APINew
Agentic video understanding: Released agentic video understanding for Gemini 3.7 Flash, 3.6 Flash, and 3.5 Flash-Lite…
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.
ai.google.dev (official source, opens in a new tab)
Summaries are short excerpts of the vendor's own text; the link on each entry goes to the official source. Tags are automatic (keyword rules) and can be wrong. Gemini API is a trademark of its owner; Relay is not affiliated with it.