Models/z-ai

glm-5.3· Released Aug 18, 2026

z-ai/glm-5.3

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...

Input
From$1.078/M
Output
From$3.388/M
Context
Up to 1M
Max output
Up to 131K
Modalities
TextText

Input and output show the lowest price across upstreams, for reference. Your actual prices are listed per upstream below.

Upstreams & pricing
UpstreamContextMax outputInput $/1MOutput $/1MCached input $/1M
NeuroSpark AIFrom price
1M131K
$1.078
$3.388
$0.2002
ScitiX
1M131K
$1.54
$4.84
$0.286
Paratera (CN)
1M131K
$1.5554
$4.8884
$0.28886

Routed in real time — you pay the listed price of whichever upstream serves your call.

How to call
curlrequest.sh
curl https://api.tkex.ai/v1/chat/completions \
  -H "Authorization: Bearer $TX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-5.3",
    "messages": [
      {"role": "user", "content": "Say hello in five words."}
    ]
  }'