Models/Google/Gemini 3.8 Flash

Gemini 3.8 Flash

Name: Gemini 3.8 Flash API access
Brand: Google

Google · Proprietary · Released Sep 2, 2026 · google/gemini-3.8-flash

Best $0.75 in / $3.75 out via Google

Compare Estimate cost

1.05M contextVisionToolsReasoningStructured outputPrompt cachingAudio input

Available from 7 providersUSD / MTOK · PRICES 22 MINUTES AGO · SPEED 24 HOURS AGO

EST. MONTHLY COSTclick a row for detail · click headers to sort

PROVIDER	INPUT	OUTPUT	CACHE	CONTEXT	QUANT	TTFT	TPS	UPTIME
Googlegoogle-vertex/global/flexFLEX1ST PARTY	$0.375	$1.88	$0.037	1.05M	—	—	—	84.6%
Google AI Studiogoogle-ai-studio/flexFLEX	$0.375	$1.88	$0.037	1.05M	—	—	—	100.0%
Googlegoogle-vertex/global1ST PARTY	$0.75	$3.75	$0.075	1.05M	—	2.1s	320 tok/s	99.1%
Google AI Studiogoogle-ai-studio	$0.75	$3.75	$0.075	1.05M	—	2.2s	341 tok/s	100.0%
Googlegoogle-vertex/us1ST PARTY	$0.825	$4.13	$0.083	1.05M	—	—	—	100.0%
Googlegoogle-vertex/global/priorityPRIORITY1ST PARTY	$1.35	$6.75	$0.135	1.05M	—	—	—	98.9%
Google AI Studiogoogle-ai-studio/priorityPRIORITY	$1.35	$6.75	$0.135	1.05M	—	—	—	100.0%

TTFT/TPS: median (P50) over trailing 504h · chat10k profile (~10K in / 200 out) · measured via OpenRouter routing · methodology v1.1 · measured 24 hours ago

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Pricing variants · USD / MTok in / out

STANDARD

$0.75 / $3.75

per MTok in / out

BATCH

$0.375 / $1.88

async batch

CACHE READ $0.075CACHE WRITE $0.042WEB SEARCH $0.014 / search

Recent changesRSS ↗

Sep 3, 2026model added

About

Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

Specifications

Context window1,048,576

Max output65,536

Modalities intext, image, video, file, audio

Modalities outtext

LicenseProprietary

ReleasedSep 2, 2026

TokenizerGemini

Gemini 4 Argon$2.00 / $10.00 Nano Banana 2.1$1.50 / $7.50 Gemini 3.7 Flash$0.75 / $3.75 Gemini 3.6 Flash$0.75 / $3.75

Embed badge

[![Gemini 3.8 Flash](https://modelindex.ai/badge/google/gemini-3.8-flash)](https://modelindex.ai/models/google/gemini-3.8-flash)

Sources

OpenRouter API22 minutes ago

AGGREGATOR

LiteLLM dataset22 minutes ago

AGGREGATOR

ModelIndex benchmarks5 days ago

MEASURED

Verified 22 minutes ago · list prices, not negotiated rates.