Tool tag: Closed Weights

Muse Spark 1.3

Meta's frontier reasoning model, shipped September 2, 2026: a 1M-token multimodal agent model at $1.25/$4.25 per million tokens.

Qwen-Image 3.0

Alibaba's third-generation image model, announced July 21, 2026: 4,500-token prompts, 10px text, 12 languages — and a second flagship with no weights.

Seed 2.1 (Doubao)

ByteDance's flagship Seed 2.1: Pro for deep-thinking agent work, Turbo for scale, plus the weekly-updated Doubao-Seed-Evolving. Closed weights.

ERNIE 5.1

Baidu's closed-weight flagship, released May 9, 2026. A sparse Mixture-of-Experts model with a 128K context — the first ERNIE whose weights stay unpublished.