Complex Workflow (ByteDance Seed in-house)
Seed2.0 Pro 64.7% leads since February 2026 Models carry out step-by-step tasks that follow a given standard operating procedure, such as multi-turn after-sales service in support, sales and healthcare.
One of six in-house application sets in the Seed1.8 and Seed2.0 model cards. Scoring is a guess.
- Made by
- ByteDance Seed
- Released
- December 2025
- Kind
- Following precise instructions
- Level
- Everyday
- Scored
- Graded by a model
- Answers
- Open-ended
- Tasks
- Kept private
- Last in a launch post
- December 2025, dropped before it saturated
- Last model added
- March 2026
Seed2.0 Pro leads with 64.7%
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
- 1 Seed2.0 Pro 64.7%
- 2 Seed1.8 54.6%
Source: Labs’ model cards
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Seed2.0 Pro | 64.7% | Feb 2026 | Lab model card | |
| 2 | Seed1.8 | 54.6% | Dec 2025 | Lab model card |
2 models have held number one in labs’ own numbers since its release in December 2025
Lab claims count from the day the card came out, independent runs from the model’s release.
Source: Labs’ model cards
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Source: Labs’ model cards
Labs headline it less often now, last in December 2025
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| Dec 18, 2025 | Seed1.8 | 54.6 | Complex Workflow |
2 system cards report it, from 1 lab
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| Mar 21, 2026 | Seed1.8 model card | 54.6 | Complex Workflow (Table 1) | Capabilities |
| Feb 14, 2026 | Seed2.0 Pro model card | 64.7 | ToB-Complex Workflows (Table 13) | Capabilities |
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