Benchmark Almanac

ZeroVideo

Only in system cards

Models answer real-world video reasoning questions that need high frame rate motion perception or multi-hop reasoning over long videos. Videos average 1,672 seconds.

In-house ByteDance Seed evaluation. The tasks are not public. It first appeared in the Seed1.8 model card with 101 questions, and the format and scoring are estimates.

Made by
ByteDance Seed
Released
December 2025
Kind
Long videos
Level
Expert
Scored
Checked automatically
Answers
Short answer
Tasks
Kept private
Last in a system card
March 2026
Last model added
March 2026
2
Models scored in lab cards
2
System cards report it, from 1 lab

Seed2.0 Pro leads with 14.5%

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.

  1. 1 Seed2.0 Pro 14.5%
  2. 2 Seed1.8 6.90%

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 Seed2.0 Pro 14.5% Feb 2026 Lab model card
2 Seed1.8 6.90% Mar 2026 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%) Seed2.0 Pro 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed2.0 Pro

Source: Labs’ model cards

Labs report it only in system cards

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.

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.

DateDocumentScoreAs the document writes itSection
Mar 21, 2026 Seed1.8 model card 6.9 ZeroVideo 6.9, 18.8 with the VideoCut tool (Table 6) Capabilities
Feb 14, 2026 Seed2.0 Pro model card 14.5 ZeroVideo 14.5, 27.9 with the VideoCut tool (Table 10) Capabilities

More in Audio and video

All 233 in Audio and video
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  • LVBench In use Hours-long video understanding with multiple-choice questions on reasoning, grounding and summarization. Gemini 4 Argon 91.7%
  • MMVU In use 3,000 expert-annotated questions on videos across 27 disciplines. Multiple-choice and open-ended accuracy. Qwen 3.8 Max 82.4%
  • MLVU In use Multi-task long video understanding (minutes to hours) with multiple-choice and generation tasks. Accuracy. Qwen 3.8 Max 90.8%
  • FLEURS In use Models transcribe read speech in 102 languages built from FLoRes-101 sentences. Model cards usually report word error rate, so lower scores are better. Phi-4-multimodal 4.00%
  • VoiceBench In use Spoken instructions with speaker, environment and content variation. Voice assistant responses scored by GPT judge or rules. Qwen3.5-Omni-Plus 93.1%