ByteDance Seed: Seed 1.6 Flash

Public pricingIntelligence 79/100Large memoryVisionDeep thinkingTool use

ByteDance Seed: Seed 1.6 Flash is a multimodal model for multimodal reasoning and analysis. It combines multimodal input handling and deep reasoning and planning with a 262K tokens context window and a low-cost profile. Use it for multimodal reasoning and analysis when latency, cost, and throughput matters.

Input

$0.07/1M

Output

$0.30/1M

Cached

$0.01/1M

Batch

$0.05/1M

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What would Seed 1.6 Flash cost you?

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1,00010,00050,000250,0001M10M

Technical specifications

Seed 1.6 Flash at a glance.

Memory

262,144

tokens

Max reply

32,768

tokens

Memory tier

Large

an entire book or large codebase

Tokenizer

—

Released

Nov 2025

Training cutoff

Aug 2025

Availability

Public pricing

Status

active

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick Seed 1.6 Flash

  • Multi-step reasoning, research agents, or hard math.
  • Screenshot analysis, image understanding, or document OCR.
  • Agentic workflows that call tools or APIs.
  • Long documents, full codebases, or extensive chat histories.

When to look elsewhere

  • Very latency-sensitive, real-time apps where every millisecond counts.

Alternatives

Similar models to compare.

FAQ

Seed 1.6 Flash — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, Seed 1.6 Flash costs roughly $18 per month. Input is $0.07 /1M tokens and output is $0.30 /1M tokens.
Seed 1.6 Flash has a 262,144-token context window (large memory — an entire book or large codebase). That means you can fit about 49,152 words of input and history in a single call.
Beyond text generation, Seed 1.6 Flash supports understanding images, deep step-by-step reasoning, calling functions / tools, strict JSON output. It streams replies by default.
Seed 1.6 Flash was released in November 2025, with training data cut off around August 2025.
Models in a similar class include Seed-2.0-Mini, Seed 1.6, Seed-2.0-Lite. The "Similar models" section below this FAQ links into each.

Still unsure?

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