How much does Z.AI: GLM 5.1 cost?

Input costs start at $1.4 / 1M tokens and output costs start at $4.4 / 1M tokens. Provider-level prices vary by service tier.

What is the context length of Z.AI: GLM 5.1?

Z.AI: GLM 5.1 supports a 200,000 token context window and up to 128,000 output tokens.

What capabilities does Z.AI: GLM 5.1 support?

Z.AI: GLM 5.1 supports Streaming, Function calling, Vision, JSON mode, Playground.

Which providers offer Z.AI: GLM 5.1?

Z.AI: GLM 5.1 is available from Alibaba Cloud Int.(CN), Lilac, Alibaba Cloud Int.(EU), Alibaba Cloud Int.(US), GMICloud, Chutes, Wafer, DeepInfra, SiliconFlow, AtlasCloud, Novita, Fireworks, Friendli, Parasail, Together, Z.ai.

How do providers handle data privacy for Z.AI: GLM 5.1?

16 of 16 providers report that customer data is not used for training, and 8 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.

Z.AI: GLM 5.1

Name: Z.AI: GLM 5.1
Price: 0.825 USD

z-ai/glm-5.1

GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on a single task for more than 8 hours, autonomously planning, executing, and improving itself throughout the process, ultimately delivering complete, engineering-grade results.

Model specifications

Input: text
Output: text
Context: 200,000 tokens
Max output: 128,000 tokens
Input price: .4 / 1M tokens
Output price: $4.4 / 1M tokens
Released: 2026-04-08

Capabilities

Streaming
Function calling
Vision
JSON mode
Playground

Provider pricing, discounts and data privacy

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

Flex service tier

2 available providers · tier input average $0.8625 / 1M tokens · tier output average $3.1505 / 1M tokens

Alibaba Cloud Int.(CN)

Tier: Flex · Region: CN

Pricing

Input: $0.825 / 1M tokens
Output: $3.301 / 1M tokens
Cache read: $0.165 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: CN
Zero data retention: No
Data retention: 60-day retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: Yes
HIPAA compliant: No
SOC 2 certified: Yes
BYOK supported: Yes

Lilac

Tier: Flex

Pricing

Input: $0.9 / 1M tokens
Output: $3 / 1M tokens
Cache read: $0.27 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: Yes
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Standard service tier

14 available providers · tier input average .177786 / 1M tokens · tier output average $3.825857 / 1M tokens

Alibaba Cloud Int.(EU)

Tier: Standard · Region: EU

Pricing

Input: $0.825 / 1M tokens
Output: $3.301 / 1M tokens
Cache read: $0.165 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: EU
Zero data retention: No
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: No

Alibaba Cloud Int.(US)

Tier: Standard · Region: US

Pricing

Input: $0.825 / 1M tokens
Output: $3.301 / 1M tokens
Cache read: $0.165 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: No
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: No

GMICloud

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: $0.979 / 1M tokens
Output: $3.08 / 1M tokens
Cache read: $0.182 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: No
Data retention: Unknown retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: Yes
BYOK supported: No

Chutes

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: $0.98 / 1M tokens
Output: $3.08 / 1M tokens
Cache read: $0.49 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: No
Data retention: Unknown retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Wafer

Tier: Standard

Pricing

Input: / 1M tokens
Output: $3.2 / 1M tokens
Cache read: $0.1 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

DeepInfra

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: .05 / 1M tokens
Output: $3.5 / 1M tokens
Cache read: $0.205 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: Yes
HIPAA compliant: No
SOC 2 certified: Yes
BYOK supported: Yes

SiliconFlow

Tier: Standard · Region: SG

Pricing

Input: .19 / 1M tokens
Output: $3.74 / 1M tokens
Cache read: $0.6 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: SG
Zero data retention: No
Data retention: Unknown retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

AtlasCloud

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: .26 / 1M tokens
Output: $3.96 / 1M tokens
Cache read: $0.234 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: No
Data retention: 7-day retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Novita

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: .38 / 1M tokens
Output: $4.4 / 1M tokens
Cache read: $0.26 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Fireworks

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: .4 / 1M tokens
Output: $4.4 / 1M tokens
Cache read: $0.26 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Friendli

Tier: Standard · Region: US

Pricing

Input: .4 / 1M tokens
Output: $4.4 / 1M tokens
Cache read: $0.26 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Parasail

Tier: Standard · Region: US · Quantization: fp8

Pricing

Input: .4 / 1M tokens
Output: $4.4 / 1M tokens
Cache read: $0.26 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Together

Tier: Standard · Region: US · Quantization: fp4

Pricing

Input: .4 / 1M tokens
Output: $4.4 / 1M tokens
Cache read: $0.26 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: US
Zero data retention: No
Data retention: Unknown retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Z.ai

Tier: Standard · Region: SG

Pricing

Input: .4 / 1M tokens
Output: $4.4 / 1M tokens
Cache read: $0.26 / 1M tokens

No provider discount is currently published.

Data privacy and compliance

Region: SG
Zero data retention: Yes
Data retention: Zero retention
Used for training: No
Data collection
Moderated: No
GDPR compliant: No
HIPAA compliant: No
SOC 2 certified: No
BYOK supported: No

Frequently asked questions

What is Z.AI: GLM 5.1?: GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on a single task for more than 8 hours, autonomously planning, executing, and improving itself throughout the process, ultimately delivering complete, engineering-grade results.
How much does Z.AI: GLM 5.1 cost?: Input costs start at .4 / 1M tokens and output costs start at $4.4 / 1M tokens. Provider-level prices vary by service tier.
What is the context length of Z.AI: GLM 5.1?: Z.AI: GLM 5.1 supports a 200,000 token context window and up to 128,000 output tokens.
What capabilities does Z.AI: GLM 5.1 support?: Z.AI: GLM 5.1 supports Streaming, Function calling, Vision, JSON mode, Playground.
Which providers offer Z.AI: GLM 5.1?: Z.AI: GLM 5.1 is available from Alibaba Cloud Int.(CN), Lilac, Alibaba Cloud Int.(EU), Alibaba Cloud Int.(US), GMICloud, Chutes, Wafer, DeepInfra, SiliconFlow, AtlasCloud, Novita, Fireworks, Friendli, Parasail, Together, Z.ai.
How do providers handle data privacy for Z.AI: GLM 5.1?: 16 of 16 providers report that customer data is not used for training, and 8 offer zero-data-retention routing. Retention, compliance, and privacy-policy links are listed per provider.

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