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:

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

This model supports the following features:

Structured Outputs Reasoning Response Format Tools
Performance Summary

ByteDance Seed 1.6, a general-purpose multimodal model with a 256K context window, demonstrates exceptional reliability with a 100% success rate across all benchmarks, indicating minimal technical failures. However, its speed ranking suggests it tends to have longer response times, placing it in the 18th percentile. In terms of cost, Seed 1.6 offers moderate pricing, ranking in the 27th percentile. The model exhibits remarkable accuracy in specific areas. It achieved perfect scores in both Hallucinations (100.0% accuracy) and Reasoning (100.0% accuracy), notably being the most accurate model at its price point and speed for these categories. It also shows strong performance in Mathematics (96.0% accuracy, 94th percentile) and Coding (94.0% accuracy, 88th percentile), indicating robust analytical and problem-solving capabilities. Instruction Following is also a strength, with 82.0% accuracy (90th percentile). While its General Knowledge (99.5% accuracy, 71st percentile) and Email Classification (98.0% accuracy, 58th percentile) are solid, its Ethics performance (99.0% accuracy, 50th percentile) is more average compared to its other high-performing areas. The primary weakness lies in its speed, which is consistently below average across benchmarks.

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
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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