ModelBeat
Models/Grok 4.20
All models
X

xAI: Grok 4.20

x-ai/grok-4.20

Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities.

Context
2M
Input
$1.25 / 1M
Output
$2.50 / 1M
Released
Feb 17, 2026
Modalities
textimagefiletext

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Grok 4.20 lands among all models tracked on Model Beat.

63.0
Intelligence Index
Epoch AI
63rd percentile of tracked models
57.0
Coding Index
Epoch AI
57th percentile of tracked models
65.0
Agentic Index
Epoch AI
65th percentile of tracked models

Reasoning

3 evals
ARC-AGI89.5%

Abstract visual reasoning

ARC-AGI-265.1%

Harder abstract reasoning

WeirdML52.3%

Novel ML problem-solving

Coding

1 evals
WebDev Arena1395

Human-rated web development

Agentic & Tools

1 evals
Terminal-Bench57.3%

Command-line agentic tasks

Model & benchmark data from Epoch AI (CC BY); pricing, specs & descriptions from OpenRouter.