zai
GLM 5.3 FlashX
GLM-5.3-FlashX is the high-speed serving option for Z.ai’s native multimodal coding model, featuring 320B total parameters, 18B activated parameters, and a 1M-token context window. Its efficient hybrid attention architecture supports visual coding, tool use, and end-to-end professional workflows across code, browsers, documents, and graphical interfaces.
reasoningtool useimplicit cachingvisionstructured outputtextimage
Overview
- Type
- language
- Context
- 1M
- Max output
- 131K
- Input / output
- text, image / text
API
Model identifier
zai/glm-5.3-flashxProviders and live performance
Rolling Gateway metrics. Latency is time to first token; throughput is output tokens per second.
| Provider | Status | Latency | Throughput | Uptime 15m / 1h / 1d | Input | Output | Cache read / write | Discount | Regions | ZDR | No training |
|---|---|---|---|---|---|---|---|---|---|---|---|
| zai | Operational | 2.56s / 8.22s | 167.5 / 276.0 tok/s | 99.11% / 99.82% / 99.93% | $0.37/M | $1.25/M | $0.07/M / — | — | — | — | No |
Pricing
input
0.00000037
output
0.00000125
input cache read
0.000000075
Capabilities
reasoningtool useimplicit cachingvisionstructured outputtextimage
Supported parameters
max tokens
Yes
temperature
Yes
stop
Yes
tools
Yes
tool choice
Yes
reasoning
Yes
include reasoning
Yes
response format
Yes
structured outputs
Yes
Reasoning options
options
{
"type": "effort",
"values": [
"low",
"high",
"max"
]
}
Metadata
type
language
context window
1M
max output
131K
released
Sep 18, 2026
temperature control
Yes
zero data retention
none
no training
none
api specifications
v2, v3, v4