Benchmark Almanac

Customer Support Q&A (ByteDance Seed in-house)

Seed2.0 Pro 72.4% leads since Feb 2026 Fading

Models answer user questions from noisy enterprise knowledge base results, such as policy questions in e-commerce, government services and telecom.

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 Dec 2025 Customer service Tasks kept private Last in a launch post Dec 2025 , dropped before it saturated Last model added Mar 2026
Level
Everyday Most adults, without training
Scored
Graded by a model A language model scores each response, usually against a rubric.
Answers
Open-ended Free-form text, documents, designs or media judged as a whole.
2
Models scored in lab cards
1
Launch post lists it, from 1 lab
2
System cards report it, from 1 lab

Seed2.0 Pro leads with 72.4%

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 72.4%
  2. 2 Seed1.8 69%
#ModelScoreSettingDateSource
1 Seed2.0 Pro 72.4% Feb 2026 Model card
2 Seed1.8 69% Dec 2025 Model card

2 models have held number one since its release in Dec 2025

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

ByteDance Seed
Lab claims Not tested since Mar 2026
Seed2.0 Pro 72.4%

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 Best so far
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed2.0 Pro Seed1.8 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Seed2.0 Pro

Labs headline it less often now, last in Dec 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
18 Dec 2025 Seed1.8 69 Customer Support Q&A

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
21 Mar 2026 Seed1.8 model card 69 Customer Support Q&A (Table 1) Capabilities
14 Feb 2026 Seed2.0 Pro model card 72.4 ToB-Reference Q&A (Table 13), the Customer Support Q&A set of 3.4 Capabilities

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