GLM-5.3

by Z.ai
zai/glm-5.3
30% off

GLM-5.3 is a text-input model by Z.ai, available through the AgentSky API as zai/glm-5.3 at $0.98 per million input tokens and $3.08 per million output tokens, with a 1M context window.

The current GLM flagship for software engineering and agent workloads, with configurable reasoning effort.

Run GLM-5.3 with an agent

Each guide pairs this model with a compatible agent and opens the composer with both selected.

Pricing

USD per million tokens, using your plan when signed in.
MeterPer 1M tokens
InputOfficial price: $1.40Sale price: $0.98
OutputOfficial price: $4.40Sale price: $3.08
Cache readOfficial price: $0.26Sale price: $0.182
Cache writeOfficial price: $1.40Sale price: $0.98

Every response carries its own cost. Balance and per-call records: /v1/credits and /v1/generation.

Use it

Point your client at the gateway and pass this model id. Nothing else changes.
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://gateway.agentsky.dev/v1",
  apiKey: process.env.AGENTSKY_API_KEY, // ast_…
});

const completion = await client.chat.completions.create({
  model: "zai/glm-5.3",
  messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(completion.usage.cost); // USD, in the response

Questions