DeepSeek V4 Flash

Made by DeepSeek · Text model · deepseek-v4-flash

Fast and cheap. Good for everyday work.

Private by design

When you use DeepSeek V4 Flash in Polymeti, your browser sends the message to DeepSeek directly, with your own API key. Nothing passes through a Polymeti server.

We never see your conversation.
Your API key is stored in your browser, not on our servers.
Your chat history lives on your device. Back it up to your own Google Drive if you want it on more than one.

What it can do

Context window

1,000,000 tokens

≈ 750,000 words · about 3,000 pages
Max output

384,000 tokens

≈ 288,000 words in a single answer

Uses tools

Modalities

Text Input and output
Image Not supported
Audio Not supported
Video Not supported

Reasoning effort

Default: High.

None
Low
Medium
High
X-High
Max

Features

Streaming Supported
Function calling Supported
Structured outputs Supported
Fine-tuning Not supported

Ready to try it?

Polymeti is currently invite-only.

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Bring your own API key · Your chats stay in your browser