DeepSeek: DeepSeek V4.1 Flash Ultrafast

deepseek/deepseek-v4.1-flash-ultrafast

1 providerText inputImage inputTool calling

API quickstart

Input / output price$0.30 / $1.20 per 1M

Context1M tokens

Max outputNot published

ReleasedOct 23, 2026

Providers

Available providers, with each one's token pricing and limits for this model.

ProviderContextMax outputInput /MCache read /MOutput /MLatencySpeedModalitiesStatus

OpenGateway1M—$0.30$0.006$1.20——Text, Image → Text

Long-context tierAbove 256K tokens: $0.60 input / $1.20 output per 1M

Capabilities

ModalitiesText, Image → Text

max_tokensreasoning_efforttoolsweb_search_options

API quickstart

Use the official OpenAI client with the AllModels OpenAI-compatible endpoint.

Response with the OpenAI SDK

Use the model ID above with the AllModels OpenAI-compatible Responses API.

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.ALLMODELS_API_KEY,
  baseURL: "https://api.allmodels.io/oai",
});

const response = await client.responses.create({
  model: "deepseek/deepseek-v4.1-flash-ultrafast",
  input: "Hello!",
});

console.log(response.output_text);