Z.AI: GLM 5.2 Fast

z-ai/glm-5.2-fast

GLM-5.2-Fast-Preview is the high-speed version of Zhipu AI’s flagship model, GLM-5.2. It supports an ultra-long context window of 1 million tokens and matches the capabilities of the standard GLM-5.2 edition, excelling in logical reasoning, long-text comprehension, and code generation. Through inference acceleration optimizations, its output throughput (TPS) reaches 1.5 to 2 times that of the standard version, significantly boosting output speed. It is ideally suited for scenarios where speed is critical, such as real-time conversations, multi-turn agent interactions, and streaming code generation.

Model specifications

Input
text
Output
text
Context
1,000,000 tokens
Max output
128,000 tokens
Input price
.4 / 1M tokens
Output price
$4.4 / 1M tokens
Released
2026-07-20

Capabilities

  • Streaming
  • Function calling
  • Vision
  • JSON mode

Provider pricing, discounts and data privacy

Compare effective provider prices, published discounts, regions, retention policies, training use, compliance, and privacy links by service tier.

Standard service tier

1 available provider · discounts up to 50% · tier input average .4 / 1M tokens · tier output average $4.4 / 1M tokens

Alibaba Cloud Int.(SG)

Tier: Standard · Region: SG

Pricing
Input
.4 / 1M tokens
Output
$4.4 / 1M tokens
Cache read
$0.28 / 1M tokens
Discounts
  • Input: 50% off — list $2.8 / 1M tokens, discounted .4 / 1M tokens, effective .4 / 1M tokens
  • Cache read: 50% off — list $0.56 / 1M tokens, discounted $0.28 / 1M tokens, effective $0.28 / 1M tokens
  • Output: 50% off — list $8.8 / 1M tokens, discounted $4.4 / 1M tokens, effective $4.4 / 1M tokens
Data privacy and compliance
Region
SG
Zero data retention
Yes
Data retention
30-day retention
Used for training
No
Data collection
Moderated
No
GDPR compliant
Yes
HIPAA compliant
No
SOC 2 certified
Yes
BYOK supported
Yes

Privacy policy · Terms · Official website · Documentation · Status · Support

Frequently asked questions

What is Z.AI: GLM 5.2 Fast?
GLM-5.2-Fast-Preview is the high-speed version of Zhipu AI’s flagship model, GLM-5.2. It supports an ultra-long context window of 1 million tokens and matches the capabilities of the standard GLM-5.2 edition, excelling in logical reasoning, long-text comprehension, and code generation. Through inference acceleration optimizations, its output throughput (TPS) reaches 1.5 to 2 times that of the standard version, significantly boosting output speed. It is ideally suited for scenarios where speed is critical, such as real-time conversations, multi-turn agent interactions, and streaming code generation.
How much does Z.AI: GLM 5.2 Fast cost?
Input costs start at .4 / 1M tokens and output costs start at $4.4 / 1M tokens. Provider-level prices vary by service tier.
Are provider discounts available for Z.AI: GLM 5.2 Fast?
Yes. Current provider offers include discounts of up to 50% from list price. The provider table shows list, discounted, and effective prices.
What is the context length of Z.AI: GLM 5.2 Fast?
Z.AI: GLM 5.2 Fast supports a 1,000,000 token context window and up to 128,000 output tokens.
What capabilities does Z.AI: GLM 5.2 Fast support?
Z.AI: GLM 5.2 Fast supports Streaming, Function calling, Vision, JSON mode.
Which providers offer Z.AI: GLM 5.2 Fast?
Z.AI: GLM 5.2 Fast is available from Alibaba Cloud Int.(SG).
How do providers handle data privacy for Z.AI: GLM 5.2 Fast?
1 of 1 providers report that customer data is not used for training, and 1 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.

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