Zhipu AI: GLM 5.3 Prime

Coming soonQuick start

GLM 5.3 Prime is Zhipu AI's high-throughput variant of GLM 5.3, released 2026-09, delivering 1.5–2× the output speed through inference acceleration. It targets coding and agentic workloads, with support for up to 128K output tokens and long-horizon multi-turn orchestration. Reasoning is always on and cannot be disabled.

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
inTextoutText
Price / 1M
$2.80 / $8.80
Context
1M
Released
Sep 23, 2026

Capabilities

ReasoningTool useLong contextPrompt cachingStructured output

Parameters

Request parameters this model accepts through the API.

frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstoptemperaturetool_choicetoolstop_ktop_logprobstop_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 Prime into your product

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

Start free