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#14

Grok 4.20 Beta

X AI Release: 2026-03-12 Tested on: 2026-05-06 14:15 x-ai/grok-4.20-beta::medium
(medium) (none)

Summary

Grok 4.20 Beta scores 8.5 on AI BENCHY and ranks #14. It has N/A reliability, a 81.5% pass rate, $0.750 total cost, and 9.75s average response time.

Archived model: this model is no longer updated or tested on new tests.

Identity note

Grok 4.20 Beta was the preview version of xAI: Grok 4.20.

Score

8.5

Consistency

9.5

Reliability

N/A

Total Cost (Current Price)

$0.750 ↑ +18.9%

Tested at: $0.631

Total Output Tokens

93,212

Total Input Tokens

35,955

Input Price

$5.805 / 1M

Output Price

$5.805 / 1M

Tests Correct

Wrong Tests: 4

Attempt pass rate: 81.5%

Flaky tests

1

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

9.75s

Response Time (max): 31.36s

Response Time (total): 175.48s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#14 Grok 4.20 Beta

medium
Cost
$0.034
Time
91.0s
Tokens
13,523 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-05-06 14:15 Re-test 8.5 N/A $0.750 Current run
2026-05-06 14:15 Re-test 8.2 N/A $0.633 Compare
2026-05-06 14:15 Re-test 8.2 N/A $0.633 Compare
2026-05-06 14:15 Suite changed 8.2 N/A $0.633 Compare
2026-04-11 01:19 First recorded run 8.0 N/A $0.633 Compare

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price
2026-06-04 15:40 $5.805 / 1M $5.805 / 1M

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 8.7 7.9
Coding 10.0 10.0
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 5.3 10.0
General Intelligence 10.0 10.0
Instructions following 9.8 10.0
Puzzle Solving 10.0 10.0
Tool Calling 3.0 10.0

Compared models