CreativeWork

Seed2.1 Pro 42.5%

Seed2.1 Pro 42.5% leads since June 2026

In use

Labs’ own numbers All independent runs

Agents complete productivity tasks in Notion, Canva and Figma by mixing GUI actions with MCP tool calls.

In-house Seed benchmark. The card does not describe the grader, so the scoring field is a guess.

Made by: ByteDance Seed
Released: June 2026
Kind: Desktop apps
Level: Everyday
Scored: Checked automatically
Answers: Agent task
Tasks: Kept private

Strongest model tested: GPT-5.5 #20 on the capability index
Last in a launch post: June 2026
Last model added: June 2026
Scores refreshed: November 12th, 2026

Paper lf3-static.bytednsdoc.com

Model scored in lab cards

Launch post lists it, from 1 lab

System card reports it, from 1 lab

Seed2.1 Pro leads with 42.5%

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.

Seed2.1 Pro leads with 42.5% across all independent runs

Best score per model across the official leaderboard, Epoch AI’s own runs and any board Epoch AI copied. Each bar and row names its source.

Bars Table

42.5 Seed2.1 Pro

1 Seed2.1 Pro 42.5%

Source: Labs’ model cards

1 Seed2.1 Pro 42.5%
2 GPT-5.5 30.5%
3 Claude Opus 4.7 28.3%
4 Gemini 3.1 Pro 27.4%

Source: Official CreativeWork leaderboard

#	Model	Score	Setting	Date	Source
1	Seed2.1 Pro	42.5%		Jun 2026	Lab model card

#	Model	Score	Date	Source
1	Seed2.1 Pro	42.5%	Jun 2026	Official leaderboard
2	GPT-5.5	30.5%	Apr 2026	Official leaderboard
3	Claude Opus 4.7	28.3%	Apr 2026	Official leaderboard
4	Gemini 3.1 Pro	27.4%	Feb 2026	Official leaderboard

The benchmark's own leaderboard has 5 entries, 4 of them models we track. Switch the scores above to rank them together.

Number one over time 2 models have held number one across all independent runs since its release in June 2026

Lab claims count from the day the card came out, independent runs from the model’s release.

OpenAI ByteDance Seed

Own leaderboard Not tested since Jun 2026

Seed2.1 Pro 42.5%

Source: Official CreativeWork leaderboard

Scores over time

All the scores we have, one dot each, so a model tested at several settings appears more than once.

On the benchmark’s own leaderboard Reported by the lab in its model card Best so far

Sources: Official CreativeWork leaderboard and labs’ model cards

One lab put it in a launch post in the last six months

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.

ByteDance Seed

Date	Launch post	Score	As the post writes it
Jun 23, 2026	Seed2.1 Pro	42.5	CreativeWork

One system card reports it

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
Jun 23, 2026	Seed2.1 Pro model card	42.5	CreativeWork (Table 4)	Capabilities

One lab claim next to the leaderboard

Each score a lab reported for its own model, beside the same model's best score on the leaderboard. Gaps mostly come from different harnesses, effort levels and task subsets. 1 of them match, which usually means one side copied the other. Every benchmark.

Model	Lab says	Board says	Gap
Seed2.1 Pro	42.5% CreativeWork	42.5% Leaderboard	Same