Grok 4.20 0309 (Reasoning)

Last updated: Recently

Model Type

Agent

Max Context

2000K

Max Output

Parameter Scale

Grok 4.20 is reasoning model from xAI with industry leading speed and agentic tool calling capabilities. 2,000,000 token context window.

Input Modality

text, image, file

Output Modality

text

Inference Speed

91.171 tokens/s

Latest Release Date

3/10/2026

SDK Ecosystem

artificial-analysismanufactureraa-bootstrap

Model Overview Fields

name

Grok 4.20 0309 (Reasoning)

Release date

3/10/2026

Performance

91.171 tokens/s

model_creator.name

xAI

AA Evaluation Scores

AA Intelligence Index

48.5

AA Coding Index

42.2

AA Math Index

MMLU Pro

GPQA

0.885

HLE

0.3

LiveCodeBench

SciCode

0.447

Math-500

AIME

AIME 2025

IFBench

0.829251700680272

LCR

0.59

TerminalBench Hard

0.409090909090909

TAU2

0.964912280701754

Output Speed (tokens/s)

91.171 tok/s

TTFT (s)

31.817s

First Answer Token (s)

31.817s

xAI

Grok 4.20 0309 (Reasoning)

$2.00/M$6.00/M

Grok 4.20 is reasoning model from xAI with industry leading speed and agentic tool calling capabilities. 2,000,000 token context window.

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