Gemini 3.5 Flash

• 🆕 Google's latest Flash-tier reasoning model, released May 2026.
• 📏 One-million-token context window; up to 65k output tokens.
• 🧠 Built on the Gemini 3 Flash reasoning foundation with thinking levels.
• 👁️ Natively multimodal: text, images, audio, video, and PDF input.
• 🔧 Tools include function calling, search grounding, code execution.
• 🎯 Tuned for agentic workflows, coding, and long-horizon tasks.
• ⚡ Configurable thinking levels trade quality against latency and cost.
• 🏢 Generally available across Gemini app, API, and Enterprise platform.

Google

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Gemini 3.5 Flash is Google's high-speed "thinking" model, positioned as a cost-efficient route that approaches Pro-tier capability while preserving the low latency of the Flash series. It is built directly on the Gemini 3 Flash reasoning foundation, accepting text, images, audio, video, and PDFs as input with a one-million-token context window and up to 65k output tokens. Built-in tooling covers function calling, structured outputs, search and URL grounding, and code execution.

Compared with its same-family predecessor Gemini 3 Flash Preview, 3.5 Flash ships as a generally available model across the Gemini app, API, and Enterprise platform, inheriting the Gemini 3 family's reasoning and multimodal capabilities. It uses configurable thinking levels so developers can trade reasoning depth against latency and cost for a given workload.

For maximum abstract-reasoning depth or the heaviest long-context retrieval, Google's Pro tier such as Gemini 3.1 Pro Preview may remain preferable. Gemini 3.5 Flash, however, is designed as a fast reasoning core for agentic pipelines, multi-turn chat, coding assistance, and document-heavy workloads where responsiveness and value matter.