Zhipu AI: GLM 5.3 FlashX

Coming soonQuick start

GLM 5.3 FlashX is Zhipu AI's high-speed variant of GLM-5.3-Flash, released 2026-09. Built on a hybrid sparse and linear attention architecture with 320B total parameters and 18B active, it delivers inference speeds up to 200 tokens per second. It is suited for efficient coding, visual understanding, and long-horizon agent tasks.

This model isn’t available on MirAPI yet, so the prices shown are the official list prices. Create an account to get notified when it goes live.

Modalities
inTextinImageinVideooutText
Price / 1M
$0.37 / $1.25
Context
1.049M
Released
Sep 18, 2026

Capabilities

ReasoningVisionTool useLong contextPrompt cachingStructured output

Parameters

Request parameters this model accepts through the API.

include_reasoningmax_tokensreasoningreasoning_effortresponse_formattemperaturetool_choicetoolstop_ktop_p

Showcase

Every chat model gets the same three fixed prompts. Outputs are archived verbatim, so you can copy a prompt and reproduce the result.

Task prompt · identical for all models
Build a single-file HTML page using three.js from a CDN: a low-poly planet with a tilted ring of ~200 orbiting particles, a soft key light plus rim light, slow auto-rotation, and drag-to-orbit controls. No build tools — one file only.
Archived output
Archive not published yet

Every model will run this exact prompt, and its output will appear here verbatim with token counts and the cost per run.

Quick start

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.mirapi.ai/v1",   # changed
    api_key=os.environ["MIRAPI_API_KEY"],   # changed
)

resp = client.chat.completions.create(
    model="",
    messages=[{"role": "user", "content": "Hello"}],
)
Wire GLM 5.3 FlashX into your product

1M free tokens to start, no card required. It’s OpenAI-compatible, so you only change the base URL.

Start free