How much does the DeepSeek V4 Flash API cost?

$0.0279 per million input tokens and $0.0558 per million output tokens, with cached input at $0.0056. DeepSeek's list price is $0.30 and $1.20, so this is 90% under DeepSeek's list price on input and 95% on output.

Is DeepSeek V4 Flash free?

It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0001.

What is the DeepSeek V4 Flash context window?

DeepSeek V4 Flash has a 1,048,576-token context window, with up to 393,216 output tokens per request. It takes text input.

What is the DeepSeek V4 Flash model id?

deepseek-v4-flash. Send it as the model through the OpenAI SDK with base URL https://api.uplinkswitch.com/v1.

UplinkSwitch

Models / DeepSeek

DeepSeek V4 Flash API pricing

0423

$0.0279 in, $0.0558 out per million tokens, 90% under DeepSeek's list price on input and 95% on output.

deepseek-v4-flashmanaged routeOpenAI SDK

Price · per million tokens, USD

Tokens	DeepSeek list price	UplinkSwitch	Saving
Input	$0.30	$0.0279	-90%
Cached input	$0.006	$0.0056	-7%
Output	$1.20	$0.0558	-95%

List price: DeepSeek's published rate, read October 2026. Same price on every host.

Real-model check: Fingerprint changed Oct 17

DeepSeek V4 Flash specs

Context window: 1,048,576 tokens
Max output: 393,216 tokens
Input: text
Released: April 24, 2026

DeepSeek V4 Flash API · base URL and key

Python · OpenAI SDK

from openai import OpenAI

client = OpenAI(
    base_url="https://api.uplinkswitch.com/v1",
    api_key="sk-uplink-live-...",
)

completion = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "Summarize this in one line."}],
)
print(completion.choices[0].message.content)

TypeScript · OpenAI SDK

import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://api.uplinkswitch.com/v1',
  apiKey: 'sk-uplink-live-...',
});

const completion = await client.chat.completions.create({
  model: 'deepseek-v4-flash',
  messages: [{ role: 'user', content: 'Summarize this in one line.' }],
});
console.log(completion.choices[0].message.content);

curl

curl https://api.uplinkswitch.com/v1/chat/completions \
  -H "authorization: Bearer sk-uplink-live-..." \
  -H "content-type: application/json" \
  -d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"Hello"}]}'

Guides: Cursor, Cline, Roo Code, Kilo Code, SDKs.

What would it cost? · paste a prompt, priced before you send it

Prompt

Answer length, tokens

Input is counted at about 4 characters per token.

Cheapest first. A real request is billed on the provider's own token count. Same estimate as JSON: POST https://api.uplinkswitch.com/v1/estimate, no key needed.

More from DeepSeek

Compare: DeepSeek V4 Flash 0423 vs Gemini 3.8 Flash, DeepSeek V4 Flash 0423 vs DeepSeek V4 Pro 0813.

DeepSeek V4 Flash questions

How much does the DeepSeek V4 Flash API cost?: $0.0279 per million input tokens and $0.0558 per million output tokens, with cached input at $0.0056. DeepSeek's list price is $0.30 and $1.20, so this is 90% under DeepSeek's list price on input and 95% on output.
Is DeepSeek V4 Flash free?: It is pay as you go: prepaid credit from $10, with no subscription or monthly fee, billed per token. A 1,000-token prompt with a 500-token reply costs about $0.0001.
What is the DeepSeek V4 Flash context window?: DeepSeek V4 Flash has a 1,048,576-token context window, with up to 393,216 output tokens per request. It takes text input.
What is the DeepSeek V4 Flash model id?: deepseek-v4-flash. Send it as the model through the OpenAI SDK with base URL https://api.uplinkswitch.com/v1.

Read: DeepSeek API cost per request, October 2026: a chat turn and a long document.

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