GLM 5.3 Flash API: Pricing and Specs

GLM 5.3 Flash API

GLM 5.3 Flash is a large language model by Z.ai, available on the Venice API as z-ai-glm-5-3-flash. Private and end-to-end encrypted variants are available.GLM-5.3 Flash is a reasoning model designed for coding, sustained agentic work, and production workloads. It is suited for long-horizon software engineering, complex reasoning, and workflows that combine text with visual context.

GLM 5.3 Flash API pricing

Model ID	Variant	Privacy	Price
`z-ai-glm-5-3-flash`	Standard	Private	$0.15 / $0.50 per 1M
`e2ee-glm-5-3-flash`	E2EE	E2EE	$0.16 / $0.54 per 1M

GLM 5.3 Flash specifications

Spec	Value
Provider	Z.ai
Released	Aug 21, 2026
Privacy	Private, E2EE
Status	Stable
Open weights	Yes
Context window	1M tokens
Max output	128K tokens
Reasoning effort	Not adjustable

How to use the GLM 5.3 Flash API

Send requests to POST https://api.venice.ai/api/v1/chat/completions with "model": "z-ai-glm-5-3-flash" and your API key.

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai-glm-5-3-flash",
    "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }]
  }'

Related models

Qwen 3.8 Flash API: $0.14 / $0.49 per 1M
MiMo-V2.6-Flash API: $0.175 / $0.35 per 1M
GPT-6 Luna API: $0.10 / $0.50 per 1M
Gemma 4 Uncensored API: $0.1625 / $0.50 per 1M

Explore

By modality

GLM 5.3 Flash API