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Google: Gemini 3.5 Flash

🇺🇸 Google · Gemini 3.5

Input Price $1.50 per million tokens NT$48.0
Output Price $9.00 per million tokens NT$288
Context Window 1.05M tokens Output limit: 66K
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Overview

Google: Gemini 3.5 Flash is a large language model API from Google, part of its Gemini 3.5 model family. Priced at $1.50 per million input tokens and $9.00 per million output tokens, it occupies the mid-range, balancing capability against running cost. Output tokens cost about 6× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. An exceptionally large 1.05M-token context window (≈1,573 pages of text) means entire repositories or document collections can be processed without chunking. Beyond plain text it also accepts Image, Video, File, Audio input, so it can be applied to multimodal tasks rather than text alone. On Artificial Analysis's Intelligence Index it scores 50 (A grade), a useful proxy for its general reasoning strength relative to the other models tracked here. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

Dimension Unit Price (USD) Price (TWD) Effective From
Input per 1M tokens $1.50 NT$48.0
Output per 1M tokens $9.00 NT$288
Cached Input per 1M tokens $0.150 NT$4.8
Cache Write per 1M tokens $0.083 NT$2.7
Reasoning per 1M tokens $9.00 NT$288
Image Input per image $0.0000 NT$0.00
Audio Input per minute $0.0000 NT$0.00
Web Search per search $0.014 NT$0.45

Provider
Google
Model Family
Gemini 3.5
Version String
google/gemini-3.5-flash
Status
Active
Modality
Text, Image, Video, File, Audio
Context Window
1,048,576 tokens
Output Limit
65,536 tokens

Index Metrics

Cross-domain capability indexes evaluated by Artificial Analysis — Artificial Analysis

Agentic Index 37 B Measured: 2026-07-01
Coding Index 70 S Measured: 2026-07-01
Intelligence Index 50 A Measured: 2026-07-01

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 69.3% B Measured: 2026-07-01
GPQA Diamond 92.2% S Measured: 2026-07-01
HLE 41.0% S Measured: 2026-07-01
IFBench 76.3% A Measured: 2026-07-01
MMMU Pro 84.3% A Measured: 2026-07-01
Non-Hallucination 39.3% Measured: 2026-07-01
Omniscience Accuracy 51.9% Measured: 2026-07-01
SciCode 53.1% A Measured: 2026-07-01
Tau2 95.3% Measured: 2026-07-01
TerminalBench 40.9% Measured: 2026-07-01

Performance Metrics

Real-world benchmarks, updated every 72 hours by Artificial Analysis — Artificial Analysis

First Token Latency 24.8s Measured: 2026-07-01
Output Speed 162 t/s Measured: 2026-07-01
Response Time 27.9s Measured: 2026-07-01

Use Case Analysis

Model strengths, weaknesses, and ideal use cases based on benchmarks and official documentation

Strength

  • Sustained Frontier Performance Most intelligent Flash model with sustained frontier-level intelligence optimized for real-world tasks. Official
  • Agentic Execution Excels at sub-agent deployment, problem solving, and rapid agentic loops at scale with parallel execution. Official
  • Thought Preservation Automatically maintains intermediate reasoning across multi-turn conversations for complex multi-step tasks. Official

Best For

  • Agentic Workflows Multi-step enterprise processes and autonomous agent systems requiring sustained reasoning. Official
  • Complex Coding Tasks Iterative debugging, code refactoring, and multi-file code generation with thought preservation. Official

90-Day Price Trend

Input / Output price (USD per 1M tokens)

Past 90 days of records; every price change is shown here

Date Dimension Price (USD) Source
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter
Image Input $0.0000 OpenRouter
Reasoning $9.00 OpenRouter
Cache Write $0.083 OpenRouter
Cached Input $0.150 OpenRouter
Output $9.00 OpenRouter
Input $1.50 OpenRouter
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter
Image Input $0.0000 OpenRouter
Reasoning $9.00 OpenRouter
Cache Write $0.083 OpenRouter
Cached Input $0.150 OpenRouter
Output $9.00 OpenRouter
Input $1.50 OpenRouter
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter
Image Input $0.0000 OpenRouter
Reasoning $9.00 OpenRouter
Cache Write $0.083 OpenRouter
Cached Input $0.150 OpenRouter
Output $9.00 OpenRouter
Input $1.50 OpenRouter
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter
Image Input $0.0000 OpenRouter
Reasoning $9.00 OpenRouter
Cache Write $0.083 OpenRouter
Cached Input $0.150 OpenRouter
Output $9.00 OpenRouter
Input $1.50 OpenRouter
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter
Image Input $0.0000 OpenRouter
Reasoning $9.00 OpenRouter
Cache Write $0.083 OpenRouter
Cached Input $0.150 OpenRouter
Output $9.00 OpenRouter
Input $1.50 OpenRouter
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter
Image Input $0.0000 OpenRouter
Reasoning $9.00 OpenRouter
Cache Write $0.083 OpenRouter
Cached Input $0.150 OpenRouter
Output $9.00 OpenRouter
Input $1.50 OpenRouter
Web Search $0.014 OpenRouter
Audio Input $0.0000 OpenRouter

Key Insights

Key data points from this page for quick reference and citation.

  • Google: Gemini 3.5 Flash Input price: $1.5/M tokens
  • Google: Gemini 3.5 Flash Output price: $9/M tokens
  • Context window: 1,048,576 tokens
  • Provider: Google
  • Model family: Gemini 3.5
  • Modalities: Text, Image, Video, File, Audio
  • Data source: OpenRouter, updated daily