SE

Seed 2.1 Pro

Reasoning modelCoding model

Seed 2.1 Pro

Release date: 2026-06-23Updated: 2026-06-24 22:28:39.277256
Live demoGitHubHugging FaceCompare
Parameters
Not disclosed
Context length
No data
Chinese support
Supported
Reasoning ability

Seed 2.1 Pro(豆包大模型 2.1 Pro)是字节跳动于 2026 年 6 月 23 日火山引擎 FORCE 原动力大会正式发布的深度思考大模型,主打 Coding、Agent、VLM 三大能力,在 Terminal Bench 2.1、SWE-Pro、SciCode 等代码评测中进入第一梯队;官方称综合使用成本较 Claude Opus 4.6 降低近 80%,每百万 tokens 输入 6 元、输出 30 元、缓存命中 1.2 元。

Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology

Seed 2.1 Pro

Model basics

Reasoning traces
Supported
Thinking modes
Thinking Mode (Default)
Context length
No data
Max output length
No data
Model type
Reasoning model
Modality (in / out)
Text → Text
Release date
2026-06-23
Model file size
No data
MoE architecture
No
Total params / Active params
No data / N/A
Knowledge cutoff
No data
Seed 2.1 Pro

Open source & experience

Code license
不开源
Weights license
不开源
GitHub repo
GitHub link unavailable
Hugging Face
Hugging Face link unavailable
Seed 2.1 Pro

Official resources

DataLearnerAI blog
No blog post yet
Seed 2.1 Pro

API details

API speed
3/5
💡Default unit: $/1M tokens. If vendors use other units, follow their published pricing.
Standard
TypeConditionInputOutput
Text-¥6.00/ 1M¥30.00/ 1M
Cache PricingPrompt Cache
TypeTTLWriteRead
Text--¥1.20/ 1M
Seed 2.1 Pro

Benchmark Results

No benchmark data to show.

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Seed 2.1 Pro

Publisher

字节跳动Seed团队
View publisher details
Seed 2.1 Pro

Model Overview

Seed 2.1 Pro(豆包大模型 2.1 Pro)是字节跳动于 2026 年 6 月 23 日火山引擎 FORCE 原动力大会正式发布的深度思考大模型,主打 Coding、Agent、VLM 三大能力,在 Terminal Bench 2.1、SWE-Pro、SciCode 等代码评测中进入第一梯队;官方称综合使用成本较 Claude Opus 4.6 降低近 80%,每百万 tokens 输入 6 元、输出 30 元、缓存命中 1.2 元。

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