Gemini 3.8 Flash

google/gemini-3.8-flash

Gemini 3.8 Flash is Google's fast, general-purpose multimodal model released in September 2026.

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Context window: 1M
Input: Audio · Document · Image · Text · Video
Output: Text
Released: 2026-09-02

Max output: 66K
Weights: Closed
Capabilities: Attachments, Reasoning, Structured, Temperature, Tool call

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Performance

Overall capability

58.2/100

Coding: 51.6
Reasoning: 57.9
Professional work: 60.7
Knowledge & language: 61.0


Arena Agent Overall	Professional work	LMArena	2026-11-08
Terminal-Bench Science · AAGemini 3.8 Flash (Medium)	Reasoning	Artificial Analysis	2026-11-05
AA-OmniscienceGemini 3.8 Flash (Medium)	Knowledge & language	Artificial Analysis	2026-11-05
MLCR-AA（Artificial Analysis）Gemini 3.8 Flash (Low)	Knowledge & language	Artificial Analysis	2026-11-05
FrontierMath v2 Tiers 1–3	Reasoning	Epoch AI	2026-11-05
AA-Analyst AgentGemini 3.8 Flash (High)	Professional work	Artificial Analysis	2026-11-05
ProgramBench	Coding	Vals AI	2026-11-05
Terminal-Bench 4.0 (AA rerun)Gemini 3.8 Flash (High)	Coding	Artificial Analysis	2026-11-05

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ModelRegistry · Catalog updated 2026-11-10