DeepSeek V4 Flash 0423

DeepSeekMCP Tool CallReasoning

deepseek/deepseek-v4-flash-0423Open Weights

Initial DeepSeek V4 Flash snapshot for economical reasoning, coding, and million-token agent workloads

Benchmark Pricing$0.14 / 1M in$0.28 / 1M out$0.03 cache read

Context: 1,000,000 tokens•Max Output: 384,000 tokens•Knowledge: 2025-05•Released: 2026-04-23

TECHNICAL SPECIFICATIONS

Context Window1,000,0001M tokens

Max Output384,000384K tokens

LicenseMITSelf-hostable

Input Modalities

Text

Function / Tool CallingSupported (MCP Ready)

Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ DeepSeek V4 Flash 0423 natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 1,000,000 tokens, this model can handle extremely large MCP resource manifests, complete database schemas, and multiple active server tool definitions simultaneously without degradation.

API CALL INVOCATION EXAMPLE

// Example: Calling DeepSeek V4 Flash 0423 via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.DEEPSEEK_API_KEY,
});

const response = await client.chat.completions.create({
  model: "deepseek/deepseek-v4-flash-0423",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);