Gemini 3.5 Flash

gemini-3.5-flash

Gemini 3.5 Flash is described by Google as a fast, cost-efficient frontier model for real-world agentic tasks. Official materials emphasize stronger coding, multi-step execution, multimodal reasoning, and long-context ability, while keeping latency and price lower than larger flagship models. It should be positioned as a high-speed agent model, not just a cheap chat model.

Context Window

1M tokens

Maximum Output

65.5K tokens

Release Date

May 19, 2026

Modalities

Gemini 3.5 Flash Pricing

Input PriceOutput PriceCache ReadCache Create 5m
$1.5/M$9/M$0.15/M$0.0833/M

Gemini 3.5 Flash API Capabilities

Reasoning

Supported

Tool calling

Supported

Temperature parameter

Supported

Attachments

Supported

Knowledge Base

2025-01-01

Endpoint Protocols

Messages APIgeminiCompletions API

Gemini 3.5 Flash Model Highlights

Gemini 3.5 Flash combines fast agentic execution, capable coding and native multimodal understanding for long-running workflows at scale.

Fast Agentic Execution

Plans, acts and iterates rapidly across multi-step workflows, making it suitable for repeated agent feedback loops.

Agentic Coding

Handles complex coding cycles involving planning, implementation, testing and iterative correction across a codebase.

Native Multimodal Context

Processes text, images, video, audio and PDFs within a context window exceeding one million input tokens.

Gemini 3.5 Flash Use Cases

Gemini 3.5 Flash is suited to collaborative sub-agent systems, codebase modernization and long multimodal document analysis.

Collaborative Sub-Agent Workflows

Deploy focused agents in parallel to research, build and review separate parts of a larger multi-step objective.

Codebase Modernization

Analyze a legacy repository, plan framework or architecture changes and iteratively migrate code while running checks.

Multimodal Document Analysis

Review long PDFs containing text, charts, images or embedded media, extract key evidence and generate structured findings.

How to Use Gemini 3.5 Flash via the TokenHub API

Create API key
curl 'https://us-api.tokenhub.com/v1/messages' \
  -X 'POST' \
  -H "Authorization: Bearer $TOKENHUB_API_KEY"

Gemini 3.5 Flash Benchmarks

Index score
Artificial Analysis Intelligence IndexArtificial Analysis broad capability aggregate34.9
Artificial Analysis Coding IndexArtificial Analysis software task aggregate47.1
Knowledge & Reasoning
GPQAAdvanced science problem solving82.8%
HLEBroad expert-level exam set23.1%
Coding & Engineering
SciCodeScientific coding challenges48.8%
Terminal-Bench HardHard terminal task execution46.2%
Instruction Following & Agent Tasks
IFBenchPrompt constraint adherence47.3%
AA-LCRLong-context reasoning53.3%
τ²-BenchAgent workflow tasks58.8%

Metrics sourced from Artificial Analysis

Media and Discussions

Selected public videos and posts related to this model.

X (Twitter)

View post on X
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Reddit

YouTube

Watch on YouTube
Watch on YouTube
Watch on YouTube

Frequently asked questions about Gemini 3.5 Flash

Understand what Gemini 3.5 Flash is, its best uses, distinguishing strengths, practical tradeoffs, and safe TokenHub integration guidance.

How should developers understand the role of Gemini 3.5 Flash?+

Gemini 3.5 Flash is Google’s current Flash model for fast, scalable agentic and multimodal workloads. It is a current public model in its provider’s documentation, though availability can vary by platform.

When does Gemini 3.5 Flash deliver the most practical value?+

Best-fit scenarios include high-volume agent loops and sub-agent orchestration, difficult software-engineering tasks, and analysis of text and visual inputs. Test representative inputs and define measurable acceptance criteria before production.

What are the most useful characteristics of Gemini 3.5 Flash?+

Key strengths include a strong balance of quality, speed, and cost, fast response times, and reliable execution of multi-step agent workflows. This combination is especially useful for difficult software-engineering tasks.

What are the practical limits of Gemini 3.5 Flash?+

Consider another model when the task needs the strongest Pro-tier reasoning, the application needs this text model to return generated images directly, or the workflow cannot include human review for important decisions. Verify important factual, legal, financial, medical, or operational outputs with qualified human review.

How should developers call Gemini 3.5 Flash through TokenHub?+

In TokenHub, select the exact model identifier displayed for Gemini 3.5 Flash, use the endpoint documented for your account, and authenticate with your TokenHub credentials. Confirm the TokenHub-exposed input types, tools, grounding options, and model lifecycle rather than assuming full Gemini API parity.

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