DeepSeek · Model
DeepSeek V4.1 Flash pricing, context window and specs
DeepSeek V4.1 Flash costs $0.30 per million input tokens and $1.20 per million output tokens, and reads up to 1,048,576 tokens per request. By blended price it is number 8 of 11 from cheapest in DeepSeek's current line-up.
- Input / 1M
- $0.30
- Output / 1M
- $1.20
- Cached / 1M
- $0.006
- Context
- 1,048,576
- Max output
- Not published
- Released
- 2026-09-10
Estimate your cost with DeepSeek V4.1 FlashCompare all DeepSeek modelsCount tokens for DeepSeek V4.1 Flash
Pricing
DeepSeek V4.1 Flash API pricing
| Price per 1M tokens | Input | Output |
|---|---|---|
| Standard | $0.30 | $1.20 |
| Cached input (read) | $0.006 | – |
| Batch API | $0.112 | $0.336 |
Output costs 4.0× the input price, so long replies drive the bill more than long prompts. If your requests share a long fixed prefix, such as a system prompt or tool definitions, caching cuts that part to 2% of the normal input price.
Examples
What DeepSeek V4.1 Flash costs in practice
| Workload | Tokens in / out | Requests/day | Per request | Per month |
|---|---|---|---|---|
| Support chatbot50% cached | 1,500 / 400 | 1,000 | $0.00071 | $21.58 |
| RAG app20% cached | 6,000 / 500 | 500 | $0.00205 | $31.13 |
| Coding agent80% cached | 40,000 / 2,000 | 200 | $0.00499 | $30.37 |
| Document summariserbatch | 8,000 / 600 | 300 | $0.0011 | $10.02 |
Change any number in the cost calculator.
Context
Context window
DeepSeek V4.1 Flash accepts up to 1,048,576 tokens per request, roughly 786,432 English words or 1,573 pages. That budget is shared between your prompt and the reply, and no separate cap on the reply is published.
Filling the whole window with one prompt costs about $0.31 at list price, so for repeated long-document work, retrieval (sending only the relevant parts) or prompt caching is usually much cheaper.
Features
Capabilities
- Image input
- Yes
- Tool / function calling
- Yes
- Reasoning mode
- Yes
- Prompt caching
- Yes
- Structured output
- Yes
- Open weights
- Yes
- Accepts
- text, image
- Knowledge cutoff
- Not published
As declared by the provider’s API. It shows a feature exists, not how well it works.
DeepSeek
Where DeepSeek V4.1 Flash sits in DeepSeek’s line-up
Ranked by blended price (three parts input to one part output, $0.525 per 1M for DeepSeek V4.1 Flash), it is number 8 of 11 from cheapest of DeepSeek’s 11 priced models. See every DeepSeek model and price
| Model | Input / 1M | Output / 1M | Context | Released |
|---|---|---|---|---|
| DeepSeek V4.1 Flash (this page) | $0.30 | $1.20 | 1,048,576 | 2026-09-10 |
| DeepSeek V4 Flash Vision Exp | $0.2156 | $0.6468 | 1,048,576 | 2026-08-21 |
| DeepSeek V4 Pro 0423 | $0.9553 | $1.9105 | 1,024,000 | 2026-04-24 |
| DeepSeek V3.2 | $0.259 | $0.42 | 163,840 | 2025-12-01 |
| DeepSeek V3.2 Exp | $0.27 | $0.41 | 163,840 | 2025-09-29 |
| DeepSeek V3.1 Terminus | $0.27 | $1 | 163,840 | 2025-09-22 |
| DeepSeek V3.1 | $0.25 | $0.95 | 163,840 | 2025-08-21 |
| R1 0528 | $0.50 | $2.15 | 163,840 | 2025-05-28 |
Save
Cheaper alternatives
- Qwen3.7 FlashQwen90% cheaper
- Gemma 4 26B A4BGoogle77% cheaper
- Muse Spark 1.2 ContributorMeta76% cheaper
- Seed 1.6 FlashByteDance Seed75% cheaper
- Claude Haiku 5.5Anthropic62% cheaper
Current models from major providers, one per provider, that keep image input, tool calling, a reasoning mode, a usable context window and output limit. Compared by blended price.
Compare
Similarly priced models
- Muse Glimmer 30BMeta$0.30 / $1.20
- MiniMax M2MiniMax$0.30 / $1.20
- Qwen3.7 PlusQwen$0.32 / $1.28
- Gemini 3.1 Flash LiteGoogle$0.25 / $1.50
- GLM 5.3 FlashXZ.ai$0.37 / $1.25
Current models from other major providers, closest blended price.
FAQ
DeepSeek V4.1 Flash questions
How much does DeepSeek V4.1 Flash cost?
DeepSeek V4.1 Flash costs $0.30 per million input tokens and $1.20 per million output tokens, with cached input at $0.006. A typical chatbot reply (1,500 tokens in, 400 out) costs about $0.00093. Use the LLM cost calculator for your own workload.
What is DeepSeek V4.1 Flash's context window?
1,048,576 tokens, about 786,432 English words or 1,573 printed pages, shared between your prompt and the reply. No separate limit on the reply is published, so the window is the limit.
Does DeepSeek V4.1 Flash support prompt caching and batch requests?
Yes, cached input is billed at $0.006 per million tokens (2% of the normal input price). A batch API is available at $0.112 input and $0.336 output per million tokens.
What are cheaper alternatives to DeepSeek V4.1 Flash?
With the same essentials (image input and tool calling), the cheapest options are Qwen3.7 Flash (90% cheaper), Gemma 4 26B A4B (77% cheaper), Muse Spark 1.2 Contributor (76% cheaper). Cheaper doesn't mean equivalent, so test them on your own prompts.
Is DeepSeek V4.1 Flash open source?
Yes, DeepSeek V4.1 Flash has open weights, so you can run it yourself or choose between several hosting providers. The prices here are a typical hosted price.