grok-4.2-beta
Grok 4.20 Beta 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.
Context
2,000,000
Max output
2,000,000
Input / 1M
$2.00
Output / 1M
$6.00
Providers
1
01Profile
Profile
Released
2026-03-19
Last updated
2026-03-19
Knowledge cutoff
—
Weights
Closed
02Capabilities
Capabilities
Input
text · image
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
Attachments
Yes
Cache read
—
Cache write
—
03Pricing
Pricing across 1 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
5+ recent events since 2026-03-19
2026-08-27Price uprequestyinput / 1M$1.80→ $2.00
2026-08-27Price uprequestyoutput / 1M$5.40→ $6.00
2026-08-20Price cutrequestyinput / 1M$2.00→ $1.80
2026-08-20Price cutrequestyoutput / 1M$6.00→ $5.40
2026-08-18Addedrequestyoffering→ new