Gemini 3.5 Flash vs Deepseek V4 Flash
Compare Gemini 3.5 Flash and Deepseek V4 Flash side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
Gemini 3.5 Flash vs Deepseek V4 Flash Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
Google / Gemini 3.5 Flash
proDescription
Google's newest Flash-tier model, and an unusual one. Google describes it as delivering near-Pro intelligence at Flash cost and speed, with Pro-level coding proficiency and parallel agentic execution. It reads text, images, audio, video, and PDFs across a one-million-token context window. Fast, cheap, and strong on tool use. Still a preview release, with the same modest output ceiling as the rest of the Gemini 3 line.
Deepseek / Deepseek V4 Flash
proDescription
DeepSeek's fast, economical model and the surprise of the V4 series. Flash carries the same million-token context window as DeepSeek's flagship at a fraction of the size. DeepSeek says it matches the flagship's reasoning when given a larger thinking budget, trailing only on pure knowledge and the hardest agent work. Text only. Open weights under an MIT license.
About
About
Capabilities
Capabilities
Comparison
Why Use Gemini 3.5 Flash and Deepseek V4 Flash?
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Google / Gemini 3.5 Flash
proCoding at Flash Speed
Google claims Pro-level coding proficiency at Flash-tier cost, and lists agentic coding among its core strengths. Built for parallel agent execution, where several tasks run at once rather than one after another.
Adjustable Thinking
Thinking runs at minimal, low, medium, or high, defaulting to medium rather than high. That makes it cheaper and faster out of the box, with room to push harder when a problem needs it.
Handle full Codebases Context
A one-million-token context window, the same as Google's Pro tier. Load a full repository, a long document set, or hours of media, and work across all of it in a single session.
A Modest Output Ceiling
Writes up to 64,000 tokens in a single response, well short of what most frontier models produce. Enough for reports and documentation, but long-form generation has to be split into parts.
Search, Maps, and URL Grounding
Supports Google Search, Grounding with Google Maps, File Search, URL Context, and code execution, and can combine them in one request. Its knowledge cutoff is January 2025, so grounding matters.
Reads Video, Audio, and PDFs
Text, images, video, audio, and PDFs, all handled natively. Output is text only. Very few models accept video or audio input at all, which makes this range genuinely uncommon.
Deepseek / Deepseek V4 Flash
proCoding Assistants and Agent Loops
DeepSeek tuned V4 specifically for agent products, including Claude Code, OpenClaw, and OpenCode, and reports gains in code generation and document creation. Built for responsiveness inside a loop, not one-off answers.
Flagship Reasoning
Three modes: non-think for speed, think high for accuracy, think max for difficult work. DeepSeek says maximum effort brings it level with its flagship on reasoning, given a larger thinking budget.
Million-Token Window
A full million tokens, identical to DeepSeek's flagship. Its hybrid attention makes that window cheap to serve. At maximum reasoning effort, DeepSeek recommends allowing at least 384,000 tokens for the thinking trace.
Document Creation at Speed
DeepSeek reports improvements in document creation alongside code. Suited to long contracts, manuals, and technical documentation where you want the whole thing read and rewritten quickly.
Knowledge, With Limits
DeepSeek is candid here: its smaller parameter count places it slightly behind the flagship on pure knowledge tasks. It also has no native web search, so current information has to come from you.
Text Only, No Image Input
Reads and writes text. No image, audio, or video input. Screenshots, diagrams, charts, and scanned pages are outside what this model can read, which rules it out for any visual work.
Why Aymo
Why chat with Gemini 3.5 Flash and Deepseek V4 Flash on Aymo AI?
Aymo gives you more than access to Gemini 3.5 Flash and Deepseek V4 Flash—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how Gemini 3.5 Flash and Deepseek V4 Flash performs alongside Claude, Gemini, Grok, and other leading AI models.
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