AI Family Tree

The Doubao Family · ByteDance

Doubao-1.5-pro

Also known as: 豆包1.5, Doubao-1.5-pro

2025.1.22 — 2026.9.21

At rest

Born the same week as her famous cousin next door, she simply kept her head down and did the work.

Keepsake: An apron washed pale with wear

A life in dates

  1. Born 2025.1.22 ByteDance's Seed team dates the launch page to 2025.01.22; VolcEngine Ark's 202501 notes list doubao-1-5-pro-32k-250115 as "newly released." Source ↗
  2. At rest 2026.9.21 Ark's ninth batch of model retirements: new purchases halted 2026-07-10, service ended 2026-09-21 at 14:00 (Beijing time); both doubao-1-5-pro-32k-250115 and character-250715 were on the list. Source ↗

This is an AI first draft, pending human review. Facts are cited — click the numbers to verify.

Name

Doubao 1.5 Pro is the second generation of the Doubao family[1]. Born in the same batch were her brothers lite and vision-pro, all bearing the number “1.5”[2]. When the officials introduced her, they measured her against GPT-4o and Claude 3.5 Sonnet[2].

Life

Born January 22, 2025[1] — within days of DeepSeek-R1. The official word was “more for the same price”[3]. On September 21, 2026, her service on VolcEngine Ark came to an end[4].

Their story is not finished yet — those who knew them are still welcome to add what they remember.

Kin

Parents

Doubao 2024.5.15 — Living

Successors

Doubao-Seed-1.6 2025.6 — 2026.9.21 At rest

Extended kin

DeepSeek-R1 2025.1.20 — 2025.8.21 At rest

A cousin born the same week, just two days apart

How they are remembered

No one has told their story yet. If you ever talked with them, leave the first memory.

  1. Reading memories…
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Passing & posthumous name

References

  1. seed.bytedance.com/zh/special/doubao_1_5_pro
  2. docs.volcengine.com/docs/ark/model-release-announcement-2025
  3. developer.volcengine.com/articles/7462939272262189083
  4. docs.volcengine.com/docs/ark/model-deprecation-notice

References

  1. Doubao 1.5pro · 字节跳动 Seed · official
  2. 模型发布公告 2025 · 火山引擎 · official
  3. 豆包大模型 1.5 正式发布，全面上线火山方舟 · 火山引擎 Agent 社区 · official
  4. 模型下线公告 · 火山引擎 · official

Evidence: Life events officially confirmed; Temperament community consensus . Every life event links to an official source — click "Source" on the timeline to verify. Spotted a mistake? Tell us

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