GLM-5.3 Flash

Name: GLM-5.3 Flash
Brand: zai
SKU: zai/glm-5.3-flash
Price: 0.158 USD
Availability: InStock

zai/glm-5.3-flash

text, image, video in · text out · 1,000,000 context · 128,000 max output

toolsschemavisionreasoningcacheno-trainShow prices also in

Effective cost per 1k requestsInput tokens 2,000Output tokens 500Cached share 50%

cost = p_in·(input − cached) + p_cache_read·cached + p_out·output + p_req; cached tokens are the prefix a sticky endpoint already holds (part2b §9.3), which is why the cheapest list price is not always the cheapest request.

Provider	Region · quant	Context / max out	Input / M	Output / M	Cache read / write	Markup	Per 1k req	Uptime 30 d	TTFT p50 / p95	Throughput	Last 24 h	Fidelity	Data	Capabilities	Status
OpenRouter	global · unknown	1,048,575 / 943,717	$0.158	$0.525	$0.032 / —	+5.0%	$0.453	—	—	—	no traffic	—	no-train 30 d	model default	active
Z.ai (GLM)	sg · none	1,000,000 / 128,000	$0.150	$0.500	$0.030 / —	pass-through	$0.430	—	—	—	no traffic	—	no-train	13 differ	active

Quick start

curl https://api.ai.ml/v1/chat/completions \
  -H "Authorization: Bearer $AIML_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"zai/glm-5.3-flash","messages":[{"role":"user","content":"Say hello"}]}'

Get a key in the console

Changelog

new_model endpoint ep_openrouter_glm-5.3-flash_global (z-ai/glm-5.3-flash) added as active; price input 0.158 output 0.525 USD/M 10/5/2026