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ByteDance Seed 2.0 Lite

Added Mar 10, 2026

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Use in the app

ByteDance Seed 2.0 Lite is a balanced long-context model for high-frequency enterprise workloads, tuned for unstructured information processing, text creation, search and recommendation, and stable structured outputs. Supports a 262k context window.

  • Vision
  • Structured output
  • Video input
Input
Text, Images, Video
Output
Text
Discovery tier
Efficient

Pricing

USD per 1M tokens
Input
$0.25
Output
$2.00

Reference prices as published by the model provider. API example

Specifications

Context window
262.1K
Max output
131.1K
Average output (7 days)
132 tokens
Longer than 13% of 468 models

Side by side

ByteDance Seed 2.0 Lite compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

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ByteDance Seed 2.0 LitedoubaoThis modelGemini 3.1 Flash LiteGoogleRemove
ProviderdoubaoGoogle
Discovery tierEfficientEfficient
AddedMar 10, 2026Mar 3, 2026
Limits
Context window262.14K1.05MBest
Max output131.07KBest65.54K
Average output132 tokens669 tokens
Pricing, USD per 1M tokens
Input$0.25$0.25
Output$2.00$1.50Best
Cache read—$0.025
Cache write—$0.0833
Performance
Throughput—461.8 tok/s
Time to first token—2.4 s
Request success (24h)—100.0%
Benchmark indexes
Intelligence Index—15.6
Coding Index—34.7
Capabilities
ReasoningNoYes
ToolsNoYes
VisionYesYes
Structured outputYesYes
PDF inputNoYes
Audio inputNoYes
Video inputYesYes
Reasoning effort—minimal, low, medium, high

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

  • ByteDance Seed 2.0 Lite
  • Gemini 3.1 Flash Lite

Intelligence Index

  • ByteDance Seed 2.0 Lite—
  • Gemini 3.1 Flash Lite15.6
3.8Catalog models by score55.1

Indexes

  • Coding Index

    Composite of the coding evaluations

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 34.7

Agentic work

  • AutomationBench-AA

    Workflow automation, penalized for guardrail violations

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 6.8%

  • AutomationBench-AA tasks completed

    Workflows finished end to end without a guardrail violation

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 0.5%

  • AA-Briefcasev1.1

    Agentic knowledge work, rated head to head

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 207 Elo

  • GDPval-AAv2.1

    Economically valuable occupational tasks, rated head to head

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 430 Elo

Document reasoning

  • GDP.pdf

    Professional reasoning over PDF documents, all-pass rate

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 7.8%

  • AA-LCRv1.1

    Reasoning across long documents

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 74.3%

  • MLCR-AA

    Long-context reasoning over medical records

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 5.0%

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 17.2%

  • GPQA Diamond

    Graduate-level science questions

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 82.2%

  • IFBench

    Following precise output instructions

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 77.2%

Coding

  • Terminal-Benchv4.0

    Practical software engineering in a terminal

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 0.5%

  • SciCode

    Scientific computing in Python

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 43.4%

Legacy evaluations

  • Terminal-Bench Hard

    Earlier terminal task suite

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 24.2%

  • τ²-Bench Telecom

    Tool use in a customer-support simulation

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 31.3%

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • ByteDance Seed 2.0 Lite: —
    • Gemini 3.1 Flash Lite: 74.3%

Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart
curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance-seed/seed-2.0-lite",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'
import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="bytedance-seed/seed-2.0-lite",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

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