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Data checked September 25, 2026
Data checked September 25, 2026
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Data checked September 25, 2026 · Every number links to its sourceRSS · Source on GitHub
Leaderboard/ByteDance
ByteDance

ByteDance · Seed 1.x

Doubao Seed Code

Closed weightsSupersededproprietary

ByteDance's late-2025 coding model; still listed (not deprecated) on Artificial Analysis but superseded by Seed 2.0 Code and Seed 2.1.

AA Intelligence
16.9#73 of 142
Price
—
Output speed
—
Context window
256K tokens

Composite indexes

  • Artificial Analysis Intelligence Index#73 of 142
    17independentv4.3.2 (AA estimate; independent evaluation forthcoming)Artificial Analysis: Doubao Seed Code ↗

    Leader: Claude Opus 5.5 at 58

Coding

  • LiveCodeBench#14 of 56
    76.6%independentAAArtificial Analysis: Doubao Seed Code ↗

    Leader: Fugu at 92.9%

Agents and tool use

  • τ²-Bench#42 of 88
    58.2%independentAA, telecomArtificial Analysis: Doubao Seed Code ↗

    Leader: GLM-5.2 at 99.1%

Reasoning and knowledge

  • Humanity’s Last Exam#81 of 147
    14.1%independentAA, no toolsArtificial Analysis: Doubao Seed Code ↗

    Leader: Claude Opus 5.5 at 61.4%

  • GPQA Diamond#81 of 142
    76.4%independentAAArtificial Analysis: Doubao Seed Code ↗

    Leader: GPT-6 Astra at 96.1%

  • CritPt#79 of 139
    0.3%independentAAArtificial Analysis: Doubao Seed Code ↗

    Leader: GPT-5.6 Sol at 32.3%

Vision and long context

  • AA Long Context Reasoning#70 of 139
    71.7%independentAAArtificial Analysis: Doubao Seed Code ↗

    Leader: Kimi K3 at 88.7%

  • MMMU-Pro#46 of 72
    68.1%independentAAArtificial Analysis: Doubao Seed Code ↗

    Leader: Claude Opus 5.5 at 87.7%

Other published results

ResultScoreReported bySource
aime-2025 · AA, AIME 202579.3%independentArtificial Analysis: Doubao Seed Code ↗
Terminal-Bench Hard (AA) · AA26.5%independentArtificial Analysis: Doubao Seed Code ↗
IFBench (AA) · AA51.4%independentArtificial Analysis: Doubao Seed Code ↗
AA-Omniscience Index · AA-35.2 index (-100..100)independentArtificial Analysis: Doubao Seed Code ↗

Specs

Released
November 11, 2025
Parameters
Undisclosed
Size class
Undisclosed
Input
text, image
Output
text
Context
256K tokens
Max output
Not published

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