Aion 3.5

aion-labs/aion-3.5 is Aion Labs' reasoning model built on the GLM family. Several specialized models contribute to each answer, which Aion says gives stronger narrative structure, tension and conflict, so it suits fiction writing. It has a 262,144-token context, up to 32,768 output tokens, tool calls and reasoning effort low, high or max. Aion 3.5 Mini is the cheaper sibling.

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

const anyrouter = createAnyRouter()
const { text } = await generateText({
  model: anyrouter("aion-labs/aion-3.5"),
  prompt: "Write the opening scene of a mystery set in a lighthouse, in 150 words.",
})
console.log(text)

curl -fsSL https://anyrouter.dev/setup.sh | bash
anyr login
anyr claude --model "aion-labs/aion-3.5"

All routes are BYOK-only. Add a key for Aion Labs, Nous Portal, Infron, AI/ML API or OpenRouter under Dashboard → BYOK; the provider bills you at its own rates and AnyRouter charges nothing for a BYOK route.

Playbooks: AI SDK, OpenAI SDK, playground.