DeepSeek: DeepSeek V4.1 Flash

Name: DeepSeek V4.1 Flash API
Brand: Deepseek

Newstable

DeepSeek V4.1 Flash is available through Everstack's OpenAI-compatible gateway with routing, fallback, retries, and observability.

deepseek-flashdeepseek-flashreleased Sep 10, 2026

Provider Quick start

Context

tokens

Max output

384K

tokens

Input

$0.30

per 1M

Output

$1.20

per 1M

Activity

Daily period usage

Aggregated managed Everstack traffic. Buckets below 5 tenants or 100 requests are withheld.

Providers

ProviderContextInput /MOutput /M

DeepSeek

1M$0.30$1.20

Pricing

Item	Price	Unit
Input	$0.30	per 1M tokens
Output	$1.20	per 1M tokens
Cache read	$0.006	per 1M tokens

Performance

Reliability

Compare

Compare usage and performance

Place this model beside up to three other catalog models.

Capabilities

Modalities

Input

Output

Details

Model ID: deepseek-flash
Family: deepseek-flash
Status: stable
Knowledge: -
Released: Sep 10, 2026

Gateway Config

API: v1
Auth: DEEPSEEK_API_KEY
Discovery: static
Provider type: static

Quick Start

index.ts

import Everstack from "@everstack/node";const client = new Everstack({  apiKey: process.env.EVERSTACK_API_KEY!,  baseUrl: "https://{instance}.{region}.everstack.ai",});const completion = await client.chat.completions.create({  model: "@deepseek/deepseek-flash",  messages: [{ role: "user", content: "Explain vector cache routing." }],});console.log(completion.choices[0]?.message?.content);

Endpoint

Base URL

https://api.deepseek.com

Chat completions

https://api.deepseek.com/chat/completions

Model

deepseek-flash

Auth env

DEEPSEEK_API_KEY

DeepSeek V4.1 Flash FAQ

How much does the DeepSeek V4.1 Flash API cost?

Through DeepSeek, DeepSeek V4.1 Flash costs $0.30 per 1M input tokens and $1.20 per 1M output tokens.

What is the context window of DeepSeek V4.1 Flash?

DeepSeek V4.1 Flash accepts up to 1M tokens of context and returns up to 384K output tokens on DeepSeek.

What can DeepSeek V4.1 Flash do?

DeepSeek V4.1 Flash supports chat, function calling, image input and reasoning. It accepts text and image input.

How do I call DeepSeek V4.1 Flash through Everstack?

Point any OpenAI-compatible SDK at your Everstack gateway and set the model to @deepseek/deepseek-flash. Everstack adds retries, provider fallback, caching, per-tenant budgets and OpenTelemetry traces for every request.