Kimi K3.1 Pro

moonshotai/kimi-k3.1-pro is the first model in Moonshot AI's K3.1 series, a post-trained Kimi K3 (2.8T total, 104B active parameters) with a 1M-token context window and image input. Moonshot reports gains in game-engine coding, parametric 3D and CAD modeling, and financial research, with the claim-level hallucination rate on its Hard bench down from 23.4% to 8.3%. Thinking is always on; reasoning_effort takes low, high or max. Owner price: $2 input, $10 output, $0.20 cached per 1M tokens. On AnyRouter it runs through BYOK (Moonshot, Vercel AI Gateway, Requesty, AIHubMix keys); open weights are due by Nov 4, 2026.

import { createAnyRouter } from "@anyr/ai-sdk-provider"
import { generateText } from "ai"

const anyrouter = createAnyRouter()
const { text } = await generateText({
  model: anyrouter("moonshotai/kimi-k3.1-pro"),
  prompt: "Refactor this module into smaller functions and explain the changes.",
})
console.log(text)

anyr auth login
curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"moonshotai/kimi-k3.1-pro","messages":[{"role":"user","content":"Write a unit test for a rate limiter."}]}'

Playbooks: AI SDK, OpenAI SDK, Claude Code.