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xAI

Grok 4.20 Beta

grok-4.20-beta

Pricing

~50%

Input: $0.625 / 1,000,000 tokens
Output: $1.25 / 1,000,000 tokens
Cache read: $0.1 / 1,000,000 tokens
Cache write: $0.625 / 1,000,000 tokens

How pricing works

Discount history

50%Nov 8, 03:56 AM UTC

Nov 7, 11:57 PMNov 8, 03:56 AM UTC

Model details

Input: text
Output: text
Context window: 2,000,000 tokens
Maximum output: 128,000 tokens
Availability: $7.6KUncapped capacity
Updated: 11/8/2026, 3:58:06 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingTool callingVisionReasoning

Supported parameters

include_reasoninglogprobsmax_tokensreasoningresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_logprobstop_p