seed-2.1-pro-preview: benchmark scores, price and ranking

seed-2.1-pro-preview from ByteDance ranks #454 of 743 LLMs on the LLMs Tiger aggregate benchmark score (47.2), based on 1 benchmark results captured up to 2026-10-13.

Organisation
ByteDance
Type
Preview release
Open weights
No
Aggregate rank
#454 of 743 (score 47.2)

Across the 1 benchmark where at least ten models are scored, seed-2.1-pro-preview is in the top 10% on 0 and in the top half on 0.

seed-2.1-pro-preview benchmark results

seed-2.1-pro-preview benchmark scores, ranked against all models measured on each benchmark
BenchmarkScoreRankSourceCaptured
LMArena Code Elo1,517#28 of 30LMArena2026-10-06

About seed-2.1-pro-preview

seed-2.1-pro-preview is a preview release from ByteDance. No API price is listed for it yet. We hold 1 benchmark result for it across 1 area, and none is in the top tenth of its board.

Where seed-2.1-pro-preview stands

On our aggregate score, seed-2.1-pro-preview is #454 of 743 ranked models, in the lower half. Its score is 47.2; the scale is centred on 50, so it sits 2.8 points below the typical model. That beats 39% of the ranked field.

seed-2.1-pro-preview, benchmark by benchmark

LMArena Code Elo is a weak spot. seed-2.1-pro-preview scores 1,517, #28 of 30, behind 90% of the models measured. The leader, Claude Opus 5.5 (max), reaches 1,814. It covers crowd-voted coding answers. The board median is 1,622, so seed-2.1-pro-preview is 104 points below it. Source: LMArena, captured 2026-10-06.

Reading these numbers

The 1 score on this page comes from 1 source: LMArena (1). No official leaderboard supplied any of them, so treat them as third-party measurements. With 1 results the aggregate rank can move a lot when one new score arrives.

Models ranked nearby

Compare it on the live leaderboard → · How the aggregate score works