Context Window
DeepseekfastTool use

DeepSeek V4 Flash

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window. It is designed for fast inference and...

1.0M context·~786K words·384K max output
View context detailsCompare with Amazon Titan Text Express
Context window1.0Mtokens
Max output384Ktokens

Context window

This model accepts 1.0M tokens in one request (~786K words of text).

Context window size1.0M tokens
4K32K128K1M10M

What fits in one request

  • Short document
    About 1,500 words of text
    Fits
  • Long document
    About 37K words of text
    Fits
  • Small codebase
    About 150K words of text
    Fits
  • Full novel
    About 375K words of text
    Fits

Specifications

Context size, pricing, and release info in one place.

Context window
1,048,576 tokens (1.0M)
Max output tokens
384,000 tokens (384K)
Speed tier
fast
Provider
Deepseek
Release date
Apr 2026

Capabilities

See which features this model supports, such as vision, tools, and streaming.

Supported (5)
Tool use
Supported
Function calling
Supported
Extended thinking
Supported
Streaming
Supported
Prompt caching
Supported
Not supported (3)
Vision
Not supported
Web search
Not supported
Batch API
Not supported

Best for

Jump to a guide or ranking that matches each workload.

ReasoningAI agentsLong documentsRAGChatbotsMath

Compare DeepSeek V4 Flash

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Frequently asked questions

Short answers about context size and how this model behaves.

DeepSeek V4 Flash has a context window of 1M tokens (1,048,576 tokens). This million-token window can process entire codebases, long legal documents, or book-length texts in a single pass.

More from Deepseek

Other models by Deepseek in our catalog.

DeepSeek V4 Pro
1.0Mbalanced
Deepseek Coder V2 Lite
164Kbalanced
Deepseek Coder V2 Lite Base
164Kbalanced
Deepseek Prover
164Kbalanced
Deepseek V2 Lite
164Kbalanced
DeepSeek V3
164Kbalanced

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