GLM-5.3 Flash is Z AI's language model with a 1.3M context window, starting at $0.15 / 1M input and $0.5 / 1M output. A natively multimodal large language model with a large total parameter count but a small fraction activated per token, delivering efficient performance for coding and long-horizon agent tasks.
Specifications
Canonical IDz-ai-glm-5-3-flash
TypeLanguage
StatusActive
CreatorZ AI
Providers
Context Window1.3M tokens
Input ModalitiesImageText
Output ModalitiesText
Reasoning Effortsdefault

Capabilities

Input2/5
Text
Image
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning
Adaptive Reasoning·
Function Calling
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Cloudflare Workers AI logo
Cloudflare Workers AI
@cf/zai-org/glm-5.3-flash
$0.15$0.5$0.03

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GLM-5.3 Flash1.3M$0.075$0.250Available
GLM-5.31.3M$1.40$4.40Available
GLM-5.2 Fast1.0M$2.10$6.60Available
GLM-5.21.0M$0.610$1.98Available
GLM-5V Turbo205K$1.20$4.00Available
GLM-5 Turbo203K$1.20$4.00Available
GLM-5.1 Non-ReasoningAvailable
GLM-5 Non-ReasoningAvailable
GLM-5 Code200K$1.20$5.00Available
GLM-5.1 Fast203K$2.80$8.80Available
GLM-5.3 Flash1.3M$0.150$0.500Current

Model IDs

@cf/zai-org/glm-5.3-flash
z-ai-glm-5-3-flash