# Sieve 31B vs swanOne (blockbrain, Qwen3.8-Flash-Next NVFP4)

As of Oct 15, 2026, Sieve 31B leads swanOne (blockbrain, Qwen3.8-Flash-Next NVFP4) in 1 of 1 shared categories: Decision models.

Sieve 31B: price per 1M tokens is unset in the catalog.

swanOne (blockbrain, Qwen3.8-Flash-Next NVFP4): price per 1M tokens is unset in the catalog.

Sieve 31B: open weights.

swanOne (blockbrain, Qwen3.8-Flash-Next NVFP4): open weights.

- Which to pick, Decision models: As of Oct 15, 2026, Sieve 31B leads swanOne (blockbrain, Qwen3.8-Flash-Next NVFP4) in Decision models at #3 against #33.

As of Oct 15, 2026, Sieve 31B is near state of the art, rank #3 in Decision models (since Oct 15, 2026; sources Decision Index Full; methodology v1.0).

As of Oct 15, 2026, swanOne (blockbrain, Qwen3.8-Flash-Next NVFP4) is ranked #33 in Decision models (since Oct 15, 2026; sources JevBench; methodology v1.0).