xAI: Grok 4.2 Reasoning

x-ai/grok-4.2-reasoning

Grok 4.20 is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.

Model specifications

Input
text
Output
text
Context
2,000,000 tokens
Max output
2,000,000 tokens
Input price
.25 / 1M tokens
Output price
$2.5 / 1M tokens
Released
2026-04-02

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.

Standard service tier

1 available provider · tier input average .25 / 1M tokens · tier output average $2.5 / 1M tokens

xAI

Tier: Standard · Region: US

Pricing
Input
.25 / 1M tokens
Output
$2.5 / 1M tokens
Cache read
$0.2 / 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
Yes
SOC 2 certified
Yes
BYOK supported
No

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

Frequently asked questions

What is xAI: Grok 4.2 Reasoning?
Grok 4.20 is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.
How much does xAI: Grok 4.2 Reasoning cost?
Input costs start at .25 / 1M tokens and output costs start at $2.5 / 1M tokens. Provider-level prices vary by service tier.
What is the context length of xAI: Grok 4.2 Reasoning?
xAI: Grok 4.2 Reasoning supports a 2,000,000 token context window and up to 2,000,000 output tokens.
What capabilities does xAI: Grok 4.2 Reasoning support?
xAI: Grok 4.2 Reasoning supports Streaming, Function calling, Vision, JSON mode, Playground.
Which providers offer xAI: Grok 4.2 Reasoning?
xAI: Grok 4.2 Reasoning is available from xAI.
How do providers handle data privacy for xAI: Grok 4.2 Reasoning?
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.

Browse all AI models