Seed 1.6 Flash

ByteDance SeedMCP Tool Call

bytedance-seed/seed-1-6-flashClosed API

Low-latency ByteDance Seed model for high-throughput chat, extraction, and lightweight tool use

Benchmark Pricing$0.07 / 1M in$0.30 / 1M out$0.01 cache read

Context: 256,000 tokens•Max Output: 32,000 tokens•Released: 2025-08-28

TECHNICAL SPECIFICATIONS

Context Window256,000256K tokens

Max Output32,00032K tokens

LicenseProprietaryCloud API only

Input Modalities

TextVisionVideo

Function / Tool CallingSupported (MCP Ready)

Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ Seed 1.6 Flash 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 256,000 tokens, this model can handle moderately large MCP tool definitions and multi-turn conversation logs comfortably.

API CALL INVOCATION EXAMPLE

// Example: Calling Seed 1.6 Flash via OpenAI SDK
import OpenAI from "openai";

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

const response = await client.chat.completions.create({
  model: "bytedance-seed/seed-1-6-flash",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

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