Benchmark Almanac

Information Processing (ByteDance Seed in-house)

Seed1.8 53.9%
Fading

Models analyze large collections of user-generated content, for example summarizing viewpoints and judging overall sentiment.

One of six in-house application sets in the Seed1.8 model card. Scoring is a guess.

Made by
ByteDance Seed
Released
December 2025
Kind
Documents and spreadsheets
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
1
Model scored in lab cards
1
Launch post lists it, from 1 lab
1
System card reports it, from 1 lab

Seed1.8 leads with 53.9%

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. 1 Seed1.8 53.9%

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 Seed1.8 53.9% Dec 2025 Lab model card

Scores over time

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

Reported by the lab in its model card
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed1.8 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed1.8

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.

ByteDance Seed
DateLaunch postScoreAs the post writes it
Dec 18, 2025 Seed1.8 53.9 Information Processing

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.

DateDocumentScoreAs the document writes itSection
Mar 21, 2026 Seed1.8 model card 53.9 Information Processing (Table 1) Capabilities

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