ByteDance Seed: Seed 1.6

Text input Image input Video input Text output
Author's Description

Seed 1.6 is a general-purpose model released by the ByteDance Seed team. It incorporates multimodal capabilities and adaptive deep thinking with a 256K context window.

Key Specifications
Cost
$$$$$
Context
262K
Released
Dec 23, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Top P Reasoning Tool Choice Temperature Structured Outputs Response Format Max Tokens Tools Frequency Penalty Include Reasoning
Features

This model supports the following features:

Structured Outputs Response Format Reasoning Tools
Performance Summary

ByteDance Seed: Seed 1.6, a general-purpose multimodal model with a 256K context window, demonstrates exceptional reliability, achieving a 100% success rate across all benchmarks. While its speed ranking places it among models with longer response times (15th percentile), its pricing is moderate (24th percentile). The model exhibits outstanding performance in critical areas. It achieved perfect accuracy in both Hallucinations (Baseline) and Reasoning (Baseline) benchmarks, notably being the most accurate model at its price point and speed for these categories. Seed 1.6 also shows strong capabilities in Instruction Following (92nd percentile), Coding (89th percentile), and Mathematics (96th percentile), indicating robust problem-solving and technical proficiency. Its General Knowledge is solid at 99.5% accuracy, and it performs well in Email Classification (98.0%) and Ethics (99.0%). The primary weakness lies in its speed, consistently ranking in the lower percentiles for duration across all tests.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.25
Completion $2

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
Seed
Seed | bytedance-seed/seed-1.6-20250625 262K $0.25 / 1M tokens $2 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
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