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doubao · Balanced

Doubao 1.5 Pro 256k

Added Mar 12, 2025

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Use in the app

Doubao's (Bytedance) flagship model with a 256k token context window. ⚠️ Note: This model routes through ByteDance, a Chinese entity - privacy and logging guarantees may be limited.

Input
Text
Output
Text
Discovery tier
Balanced

Pricing

USD per 1M tokens
Input
$0.80
Output
$1.45

Reference prices as published by the model provider. API example

Specifications

Context window
256K
Max output
16.4K

Side by side

Doubao 1.5 Pro 256k compared

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

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Doubao 1.5 Pro 256kdoubaoThis modelAmazon Nova Pro 1.0amazonRemove
Providerdoubaoamazon
Discovery tierBalancedBalanced
AddedMar 12, 2025Dec 3, 2024
Limits
Context window256K300KBest
Max output16.38K32KBest
Average output—56 tokens
Pricing, USD per 1M tokens
Input$0.80$0.80
Output$1.45Best$3.20
Benchmark indexes
Intelligence Index—7.0
Math Index—7.0
Capabilities
Reasoning effort——

Public evaluations

Benchmarks

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

  • Doubao 1.5 Pro 256k
  • Amazon Nova Pro 1.0

Intelligence Index

  • Doubao 1.5 Pro 256k—
  • Amazon Nova Pro 1.07.0
3.8Catalog models by score55.1

Indexes

  • Math Index

    Composite of the math evaluations

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 7.0

Document reasoning

  • AA-LCRv1.1

    Reasoning across long documents

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 21.0%

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 3.2%

  • GPQA Diamond

    Graduate-level science questions

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 49.9%

  • MMLU-Pro

    Multi-subject knowledge and reasoning

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 69.1%

  • IFBench

    Following precise output instructions

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 38.1%

Coding

  • LiveCodeBench

    Recent competitive programming problems

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 23.3%

Math

  • AIME 2025

    Competition mathematics, 2025 problems

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 7.0%

  • AIME

    Competition mathematics

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 10.7%

  • MATH-500

    Competition math problems

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 78.6%

Legacy evaluations

  • Terminal-Bench Hard

    Earlier terminal task suite

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 6.1%

  • τ²-Bench Telecom

    Tool use in a customer-support simulation

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 14.0%

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • Doubao 1.5 Pro 256k: —
    • Amazon Nova Pro 1.0: 21.0%

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": "doubao-1.5-pro-256k",
    "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="doubao-1.5-pro-256k",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

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