← All models
Z.ai
GLM-5.3-Flash
Live · US + CAtextimagevideoMIT (reported)
The smaller, cheaper multimodal sibling of GLM-5.3, built for high-throughput agent work.
Price per 1M tokens
Input
$0.15
Cached input
$0.03
Output
$0.50
Priced per model · Same in US and CA · Free tier included · Pricing
AA Index
42
#4 of 14
open models we serve
Specs
- Model id
glm-5-3-flash- Weights released
- Aug 26, 2026
- Parameters
- 320B total · 18B active
- Architecture
- MoE
- Context
- 1M tokens (1,000,000)
- Input
- text, image, video
- License
- MIT (reported)
- Regions
- us, ca
- Weights
- zai-org/GLM-5.3-Flash ↗
Use it
Three lines of code, or zero.
OpenAI-compatible. Use the model id below, or auto to let the router decide when this model is worth it.
import os
from openai import OpenAI
client = OpenAI(base_url=os.environ["ST_BASE_URL"], api_key=os.environ["ST_API_KEY"])
resp = client.chat.completions.create(
model="glm-5-3-flash",
messages=[{"role": "user", "content": "Hello"}],
)