Gemini 3.5 Flash Is Now Available in Puter.js

Puter.js now supports Gemini 3.5 Flash, Google's newest frontier-class model—announced at Google I/O 2026 and built for high-speed agentic workflows and coding.

What is Gemini 3.5 Flash?

Gemini 3.5 Flash is Google's strongest agentic and coding model yet, delivering Pro-level reasoning at Flash-level latency and cost. It outperforms Gemini 3.1 Pro on coding and agentic benchmarks while running approximately 4x faster than comparable frontier models, with throughput around 289 tokens per second. Key capabilities include:

• Frontier coding performance: 76.2% on Terminal-Bench 2.1 and 83.6% on MCP Atlas
• Multimodal reasoning: 84.2% on CharXiv Reasoning for chart and document understanding
• 1M token context window: Handle massive codebases, long documents, and multi-step tool traces in a single prompt
• 64K token output: Generate detailed code, reports, and structured responses
• Multimodal input: Accepts text, images, audio, video, and PDF
• Built for agents: Designed for orchestrating multi-step tool use and iterative code generation

Examples

Agentic coding

puter.ai.chat("Refactor this function to use async/await and add proper error handling: " + code,
  { model: 'gemini-3.5-flash' }
);

Long-context document analysis

puter.ai.chat("Summarize the key findings and contradictions across these research papers: " + papers,
  { model: 'gemini-3.5-flash' }
);

Multi-step reasoning

puter.ai.chat("Plan a 7-day itinerary for Tokyo with a $2000 budget, optimizing for food and culture",
  { model: 'gemini-3.5-flash' }
);

Chart and image understanding

puter.ai.chat(
  "What trends does this chart show?",
  "https://example.com/revenue-chart.png",
  { model: 'gemini-3.5-flash' }
);

Get Started Now

Just add one library to your project:

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

Or add one script tag to your HTML:

<script src="https://js.puter.com/v2/"></script>

No API keys and no infrastructure setup. Start building with Gemini 3.5 Flash immediately.

Learn more:

• Free, Unlimited Gemini API
• Puter.js Documentation