Kimi K3.1 Pro and Kimi K3.1 Pro Highspeed are available now in AI Gateway
Source
vercel.com
Author
Zachary Chen
Date
Why it matters
Kimi K3.1 Pro (1M context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition →, image input) and a faster Highspeed variant can be called through the AI SDK, Chat Completions, Responses, Anthropic Messages APIs, or Claude Code and Codex. open weightsA model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.Full definition → are planned by November 4.
Terms in this piece · Glossary
token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
