GLM 5.3 Flash (Cloudflare) API

Cloudflare · serves glm-5.3-flash

Pricing

Input / 1M	$0.15
Output / 1M	$0.50
Blended / 1M	$0.65
Cached input / 1M	$0.03
Context window	1,310,720 tokens
Max output	1,179,648 tokens
License	Open weights · MIT permissive
Knowledge cutoff	January 2026 · source
Intelligence index	57.5 Artificial Analysis Intelligence Index · source

textvisionfunction-calling

Price verified 2026-09-05 (0 days ago) · sourcecorroborated

Sources

Source	Input / 1M	Output / 1M	Verified
OpenRouter	$0.15	$0.50	2026-09-05
LiteLLM	$0.15	$0.50	2026-09-03
models.dev	$0.15	$0.50	2026-09-04

Two independent sources agree within 20%.

Cheaper providers for glm-5.3-flash

Provider	Blended / 1M	Endpoint
Relace	$0.309	view →
GMICloud	$0.325	view →
Novita AI	$0.325	view →

Compare all 19 providers serving glm-5.3-flash →

Call it

Served via OpenRouter, pinned to Cloudflare — the provider these prices are resolved from. Set OPENROUTER_API_KEY. Provider page.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-5.3-flash",
    "messages": [{"role": "user", "content": "Hello"}],
    "provider": {"only": ["Cloudflare"], "allow_fallbacks": false}
  }'

from openai import OpenAI  # pip install openai

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="...",  # OPENROUTER_API_KEY
)
resp = client.chat.completions.create(
    model="z-ai/glm-5.3-flash",
    messages=[{"role": "user", "content": "Hello"}],
    extra_body={"provider": {"only": ["Cloudflare"], "allow_fallbacks": false}},
)
print(resp.choices[0].message.content)

Price unchanged since 2026-09-03 — 1 point on record.

Use this data

Raw JSON for this page: glm-5.3-flash.json. Free to reuse under CC BY 4.0 with attribution to apipriceindex.com.