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DeepSeek V4 Flash

DeepSeek V4 Flash by DeepSeek, through an OpenAI-compatible chat completions API.

deepseek-v4-flashGet API key

Pricing USD per million tokens

TokensPer 1M tokens
Input$0.4286
Cached input$0.0429
Cache write (5 min)$0.4286
Cache write (1 hour)$0.4286
Output$1.2857

Reasoning tokens are billed as output. Each answer's usage carries cost_usd, the amount taken from your balance; a request with no answer costs $0.00.

Request

curl
curl https://api.revana.si/v1/chat/completions \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"Write a haiku about routing."}]}'
Python
import os
from openai import OpenAI

client = OpenAI(base_url="https://api.revana.si/v1", api_key=os.environ["REVANA_API_KEY"])
reply = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "Write a haiku about routing."}],
)
print(reply.choices[0].message.content)

Any OpenAI SDK works: set the base URL to https://api.revana.si/v1. Streaming, tools and the rest are in the chat completions docs.

Details

Model id
deepseek-v4-flash
Maker
DeepSeek
Endpoint
POST /v1/chat/completions
Context window
1M tokens
Max output
393K tokens
Streaming
Yes (server-sent events)
Routes
1

1 route

One route today. A request that gets no answer is not charged.

About the DeepSeek V4 Flash API

How much does the DeepSeek V4 Flash API cost?

DeepSeek V4 Flash costs $0.4286 per million input tokens, $0.0429 per million cached input tokens and $1.2857 per million output tokens on Revana. You pay from prepaid credit for the tokens each request used, with no subscription or minimum.

How do I call DeepSeek V4 Flash from code?

Use any OpenAI SDK with base URL https://api.revana.si/v1 and your Revana API key, and set model to "deepseek-v4-flash". POST /v1/chat/completions takes the OpenAI request body, streamed or not.

What happens if a request fails?

A request that gets no answer costs nothing.

Is DeepSeek V4 Flash on Revana the same model?

Yes. Revana passes your request to DeepSeek's model unchanged and returns its answer in the OpenAI format, with the usage it reported and what the request cost.

More from DeepSeek

Also as markdown for agents. Every language model and price: llms.json.