Yi Lightning

by 01.AI

Yi family

Parameters

—

Context window

16K tokens

Released

2024-10-16

Input price / 1M tok

$0.14

Output price / 1M tok

$0.14

Modality

tools

About Yi Lightning

01.AI's proprietary flagship. Kai-Fu Lee's Chinese frontier lab. Yi Lightning is the closed-source model behind their chat; the earlier Yi-34B open weights are still widely fine-tuned. Focused on cost-efficient bilingual chat.

Strengths

Very cheap
Bilingual
Backed by a Kai-Fu Lee lab
Yi-34B open variant available

Weaknesses

Short context (16K on Lightning)
No vision
Smaller ecosystem

Best for

Bilingual chatCost-sensitive production

Vendor page →HuggingFace →