Gemini 3.8 Flash

Claims and evidence

• Released 2 September 2026 ● Primary source[1]Gemini 3.8 Flash and Cyber: get started today [3]September 2, 2026 [4]Versions

• Status Available ● Primary source[5]Gemini 3 models: gemini-3.8-flash [6]Models available for shorter availability periods

• Successor of Gemini 3.7 Flash ● Primary source[1]first paragraph [2]Model Information: Description; Model dependencies

• Change · Reasoning Takes extra reasoning steps and calls tools repeatedly on complex tasks, so Google says it can use more tokens at higher effort levels; 3.7 Flash stays supported.Compared with Gemini 3.7 Flash ● Primary source[1]
• Change · Other Google says software engineering, agentic tasks and multi-step reasoning in specialised domains improved over 3.7 Flash.Compared with Gemini 3.7 Flash ● Primary source[2]
• Change · Safety Google reports that the Gemini 3.8 models are more robust against prompt-injection attacks.Compared with Gemini 3.7 Flash ● Primary source[1]
• Change · Availability Offered to Google AI Pro and Ultra subscribers in the Gemini app, AI Mode in Google Search and Gemini in Google Sheets, where 3.7 Flash reached consumers only through Gemini Spark.Compared with Gemini 3.7 Flash ● Primary source[1]

• Input text, image, audio, videoPDF input is also listed. ● Primary source[7]Supported data types: Inputs [2]Model Information: Inputs
• Output text ● Primary source[7]Supported data types: Output [2]Model Information: Outputs
• Feature Reasoning modeEffort (thinking) levels low, medium (default) and high; minimal is not supported. ● Primary source[7]Capabilities: Thinking [2]Model Information: Description [4]introduction: thinking_level note
• Feature Computer useListed as preview on the Gemini API model page. ● Primary source[7]Capabilities: Computer use
• Context window 1,048,576 tokensThe model card gives a context window of up to 1M tokens; output is limited to 65,536 tokens. ● Primary source[7]Token limits: Input token limit [4]Token limits: Context window
• Parameters Not disclosedNot disclosed by Google. No claim madeNo source
• Access API, consumer appGemini API (Google AI Studio, Android Studio), Google Antigravity, Stitch and Gemini Enterprise; for Google AI Pro and Ultra subscribers in the Gemini app, AI Mode in Google Search and Gemini in Google Sheets. ● Primary source[1]Gemini 3.8 Flash and Cyber: get started today [2]Distribution

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Related AI Radar coverage

• See what 4 builders are making with Gemini 3.8 FlashGoogle (AI & DeepMind) · Gemini · 28 September 2026
• Introducing Gemini 3.8 Flash and 3.8 Flash CyberGoogle (AI & DeepMind) · DeepMind · 2 September 2026

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