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ModelCap

Model decision surface

Compare AI models

Start with Seed 2.1 Turbo and LongCat 2.0, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.

Current public data

Seed 2.1 Turbo vs LongCat 2.0

Live dataset updated 9/10/2026, 6:20:44 AM UTC

Open 1200×630 evidence receipt
Factual comparison of Seed 2.1 Turbo and LongCat 2.0
Field
Seed 2.1 Turbo

ByteDance Seed

ModelCap position#18#10
Index score76.879.2
EvidenceEstimatedglobal-corpus-prior over 185 held-out anchors (12%); launch card against 2 resolved peers on 3 rows (88%); exceeds every named peer on 1 of 3 rows; no cross-lab optimism probe available; shrunk 3.1 toward the measured corpusEstimatedglobal-corpus-prior over 185 held-out anchors (7%); launch card against 4 resolved peers on 6 rows (93%); no cross-lab optimism probe available; shrunk 1.9 toward the measured corpus
Input / 1M$0.50$0.30
Output / 1M$2.50$1.20
Pricing statusfreshfresh
Context262K1M
Providers11
Weight accessAPI onlyOpen weights

Decision facts

  • Seed 2.1 Turbo is #18; LongCat 2.0 is #10 on the same current language board.
  • Index scores are 76.8 for Seed 2.1 Turbo and 79.2 for LongCat 2.0. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
  • Both positions use Estimated evidence.
  • Listed output price per 1M tokens is $2.50 for Seed 2.1 Turbo and $1.20 for LongCat 2.0. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $2.25 for Seed 2.1 Turbo versus $1.20 for LongCat 2.0. LongCat 2.0 costs 46.7% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.
  • Published context is 262,144 tokens for Seed 2.1 Turbo and 1,048,756 for LongCat 2.0.
  • Weight access differs: Seed 2.1 Turbo is none; LongCat 2.0 is open.

These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.

Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.