DeepSeek's official V4.1 Flash model (`deepseek-flash`) with a 1M-token context window, up to 384K output tokens, hybrid thinking mode (configurable reasoning effort), native Chat Completions vision (JPEG/PNG/GIF/WebP), function calling, and streaming. Served on the official DeepSeek API at off-peak list pricing.
DeepSeek's official V4.1 Flash model (`deepseek-flash`) with a 1M-token context window, up to 384K output tokens, hybrid thinking mode (configurable reasoning effort), native Chat Completions vision (JPEG/PNG/GIF/WebP), function calling, and streaming. Served on the official DeepSeek API at off-peak list pricing.
DeepSeek V4.1 Flash is an AI model from DeepSeek, available on ZeroTwo. It costs $0.15 per million input tokens and $0.60 per million output tokens, has a 1,000,000-token context window, can return up to 384,000 output tokens.
Intelligence
Fair
Speed
Slow
Price
$0.15 • $0.60
Input • Output
Input
Text, Image
Output
Text
DeepSeek's official V4.1 Flash model (`deepseek-flash`) with a 1M-token context window, up to 384K output tokens, hybrid thinking mode (configurable reasoning effort), native Chat Completions vision (JPEG/PNG/GIF/WebP), function calling, and streaming. Served on the official DeepSeek API at off-peak list pricing.
1,000,000 context window
384,000 max output tokens
Reasoning token support
Pricing
Pricing is based on the number of tokens used. For tool-specific models, like search and computer use, there's a fee per tool call. See details in the pricing page.
Listed rates are off-peak; peak hours are 2× per DeepSeek pricing. Context cache hits bill at the cached-input rate.
Text tokens
Per 1M tokens
∙
Batch API price
Input
$0.15
Cached input
$0.003
Output
$0.60
Quick comparison
Input
Cached input
Output
DeepSeek V4.1 Flash
$0.15
Modalities
Text
Input and output
Image
Input only
Audio
Not supported
Endpoints
Chat Completions
v1/chat/completions
Responses
v1/responses
Batch
v1/batch
Realtime
v1/realtime
Assistants
v1/assistants
Fine-tuning
v1/fine-tuning
Embeddings
v1/embeddings
Image Generation
v1/images/generations
Image Edit
v1/images/edits
Speech Generation
v1/audio/speech
Transcription
v1/audio/transcriptions
Translation
v1/translations
Moderation
v1/moderations
Completions (legacy)
v1/completions
Features
Streaming
Supported
Function calling
Supported
Structured outputs
Supported
Fine-tuning
Not supported
Distillation
Not supported
Fast response
Not supported
Cost efficient
Not supported
Tools
Tools supported by this model when using the Responses API.
Web search
Not supported
Code interpreter
Not supported
File search
Not supported
Image generation
Not supported
MCP
Not supported
Snapshots
Snapshots let you lock in a specific version of the model so that performance and behavior remain consistent. Below is a list of all available snapshots and aliases for DeepSeek V4.1 Flash.
deepseek-flash
DeepSeek-V4.1-Flash
Questions
How much does DeepSeek V4.1 Flash cost?
DeepSeek V4.1 Flash is priced at $0.15 per million input tokens and $0.60 per million output tokens, with cached input at $0.003 per million. On ZeroTwo it is included in your plan's credits rather than billed per token.
What is DeepSeek V4.1 Flash's context window?
DeepSeek V4.1 Flash accepts up to 1,000,000 tokens of context and can return up to 384,000 output tokens.
Can I use DeepSeek V4.1 Flash for free?
You can try DeepSeek V4.1 Flash on ZeroTwo's free plan, which includes a monthly credit allowance across every model in the catalogue. Heavier use moves to a paid plan rather than a per-token bill.