No code changes
Apps that call deepseek-v4-flash keep working. Change the base URL and API key and nothing else.
DeepSeek
Operational· checked every few minutesDeepSeek V4 Flash API
The DeepSeek V4 Flash API name your code already uses, at 90% below list price
Price per 1M tokens90%off
- Input
- $0.03
$0.30 - Output
- $0.12
$1.20 - Cached input
- $0.00074
$0.006
Model ID
deepseek-v4-flashUpdated chat.py
from openai import OpenAIclient = OpenAI( base_url="https://api.zurelay.com/v1", api_key="YOUR_ZURELAY_KEY",)stream = client.chat.completions.create( model="deepseek-v4-flash", messages=[ {"role": "user", "content": "Explain quicksort briefly."}, ], stream=True,)for chunk in stream: if chunk.choices: print(chunk.choices[0].delta.content or "", end="")Base URL https://api.zurelay.com/v1. Works with any OpenAI SDK. Chat API docs
- Context window
- 1M tokens
- Max output
- 384K tokens
- Reasoning
- none · high · max
- Input
- Text
- Released
- Apr 24, 2026
- Status
- Operational
Pricing
DeepSeek V4 Flash API pricing. A fraction of the list price.
Pay as you go from prepaid credit, with no subscription. Top up from $10. Requests that fail are never billed.
| Rate | Zurelay | DeepSeek list | You save |
|---|---|---|---|
Input per 1M tokens | $0.03 | 90%off | |
Output per 1M tokens | $0.12 | 90%off | |
Cached input per 1M tokens | $0.00074 | 88%off |
One rate at every prompt length, up to the full 1M context window. Streaming, tool calls and structured outputs cost nothing extra.
Every DeepSeek model and priceSavings calculator
Move the sliders to your monthly usage.
Input tokens per month50M
Output tokens per month10M
Zurelay
$2.70
DeepSeek list price
$27.00
You save every month$24.30
$291.60 a year
Cost
DeepSeek V4 Flash API cost, worked out.
Typical workloads at Zurelay's live prices, next to the list price.
Chatbot
50,000 requests a month, 1,500 tokens in and 300 out, 30% of the input cached. $0.000068 a request.
$3.39a month$33.89at listDocuments
20,000 requests a month, 8,000 tokens in and 500 out, 20% of the input cached. $0.000253 a request.
$5.06a month$50.59at listCoding agent
5,000 requests a month, 40,000 tokens in and 1,500 out, 85% of the input cached. $0.000385 a request.
$1.93a month$19.02at listClassification
1,000,000 requests a month, 400 tokens in and 5 out. $0.000013 a request.
$12.60a month$126.00at list
Overview
What is DeepSeek V4 Flash?
DeepSeek V4 Flash was the fast, low-cost half of DeepSeek's V4 launch in April 2026. DeepSeek has since retired it on its own API and answers the deepseek-v4-flash name with the newer V4.1 Flash. The Zurelay DeepSeek V4 Flash API does the same, so existing code keeps working at 90% below list price.
The DeepSeek V4 Flash API launched on April 24, 2026 with the smaller model in the DeepSeek V4 family: 284B total parameters with 13B active, a 1M-token context, and thinking and non-thinking modes. DeepSeek described it as fast and cost-effective, with reasoning close to V4 Pro. On July 31, 2026 DeepSeek shipped the official release, a re-post-trained checkpoint named DeepSeek-V4-Flash-0731.
On September 10, 2026 DeepSeek released V4.1 Flash and retired V4 Flash on its API. For compatibility, DeepSeek now serves requests for deepseek-v4-flash with V4.1 Flash, billed at the Flash price. Zurelay's deepseek-v4-flash follows the same rule, so the DeepSeek V4 Flash API name in your code keeps working and returns the current Flash model.
In practice that means a 1M-token context window, up to 384K output tokens, thinking and non-thinking modes, tool calls and JSON output. If you need the V4 Flash checkpoint itself for reproducible results, call deepseek-v4-flash-0731. If you are starting fresh or want image input, call deepseek-v4.1-flash directly.
On Zurelay, deepseek-v4-flash costs $0.03 per 1M input tokens and $0.12 per 1M output tokens, one rate at all hours. Point any OpenAI SDK at https://api.zurelay.com/v1 and keep your model string as it is.
Strengths
Where DeepSeek V4 Flash shines. And what teams build with it.
The current Flash model behind the name
As on DeepSeek's own API, V4.1 Flash answers this name. DeepSeek reports V4.1 Flash ahead of V4 Pro in tests by multiple parties.
1M context, 384K output
There is room for whole repositories, long documents and long agent traces, plus very long generated answers.
A pinned option on the same key
Need the V4 Flash checkpoint itself? deepseek-v4-flash-0731 serves that fixed release.
Use cases
Migrating existing DeepSeek apps
Move production traffic that uses the deepseek-v4-flash name without touching prompts or model strings.
Agent and tool-calling loops
Run multi-step agents with tool calls and JSON output over long contexts.
Coding assistants
Generate, review and explain code with thinking on, or get quick completions with it off.
Bulk processing
Summarize, classify and extract from large volumes of text at a low per-token rate.
Get started
Call DeepSeek V4 Flash in three steps.
No waitlist and no new SDK. If your code already talks to OpenAI, it already talks to Zurelay.
- 1
Create a key
Sign up, add credit and create an API key. Set a monthly budget or a rate limit per key if you like.
- 2
Point your SDK at Zurelay
Change the base URL. Everything else in your code stays the same.
https://api.zurelay.com/v1 - 3
Use deepseek-v4-flash
Send chat completions as usual. Streaming, tool calls and usage reporting work as you expect.
deepseek-v4-flash
Works with the tools you already use
Compare
Similar models. All on the same key.
90%off
DeepSeek V4.1 Flash
$0.03 / $0.12 per 1M tokens
Pick DeepSeek V4.1 Flash to call the current Flash model by its own name and to send images.
DeepSeek V4.1 Flash API69%off
DeepSeek V4 Flash 0731
$0.029 / $0.087 per 1M tokens
Pick DeepSeek V4 Flash 0731 to pin the V4 Flash release checkpoint for reproducible, text-only results.
DeepSeek V4 Flash 0731 API84%off
DeepSeek V4 Pro 0813
$0.23 / $0.62 per 1M tokens
Pick DeepSeek V4 Pro 0813 for the larger 1.6T-parameter V4 model on a fixed checkpoint.
DeepSeek V4 Pro 0813 APIHow much does the DeepSeek V4 Flash API cost?
On Zurelay, deepseek-v4-flash costs $0.03 per 1M input tokens and $0.12 per 1M output tokens, with cached input at $0.00074. The list price is $0.30 input and $1.20 output per 1M, DeepSeek's peak-hour Flash rate, so you save 90%. Zurelay uses one rate at all hours.
Is there a cheaper DeepSeek V4 API?
Zurelay serves the deepseek-v4-flash name at 90% below DeepSeek's peak list price, with no peak-hour pricing to plan around. You pay as you go, and credit you buy doesn't expire while your account is open.
Which model answers deepseek-v4-flash requests?
DeepSeek retired V4 Flash on its API on September 10, 2026 and now serves the deepseek-v4-flash name with DeepSeek V4.1 Flash. Zurelay does the same, so you get the current Flash model under the name you already use. To pin the V4 Flash checkpoint itself, use deepseek-v4-flash-0731.
How do I call the DeepSeek V4 Flash API with the OpenAI SDK?
Set the OpenAI SDK's base URL to https://api.zurelay.com/v1, use your Zurelay API key and keep model "deepseek-v4-flash". Prompts, tool definitions and streaming code stay the same.
What is the DeepSeek V4 Flash context window?
1M tokens of context and up to 384K output tokens per response.
What is DeepSeek V4 Flash best at?
Fast, low-cost work at scale: coding help, tool-calling agents, extraction and summarization over long inputs. It is also the easiest way to move an app built on DeepSeek's V4 Flash name without code changes.
Does the DeepSeek V4 Flash API support streaming and per-key rate limits?
Streaming works with stream: true, as with the OpenAI API. You can set a requests-per-minute cap and a monthly budget on each Zurelay API key.
Are responses the same as from DeepSeek's API?
Yes, in the same sense as DeepSeek's own API: both serve deepseek-v4-flash with DeepSeek V4.1 Flash. Responses are sampled, so wording varies between runs. Zurelay is independent and not affiliated with DeepSeek.
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