Advertise here
#403

Grok 4.20 Multi Agent Beta

X AI Release: 2026-03-12 Tested on: 2026-05-06 14:16 x-ai/grok-4.20-multi-agent-beta::medium
~1T total (~100B active)MoEClosedEstimated

Summary

Grok 4.20 Multi Agent Beta scores 3.9 on AI BENCHY and ranks #403. It has N/A reliability, a 46.4% pass rate, $5.599 total cost, and 9.69s average response time.

What makes Grok 4.20 Multi Agent Beta unique: It stands out most in Data parsing and extraction, where it ranks #1, while Agentic is its weakest area at #11.

Archived model: this model is no longer updated or tested on new tests.

Model facts

Researched on 2026-08-12

Estimated
Parameters
~1T total (~100B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. xAI does not disclose the architecture or count.

Parameter source Availability source

Score

3.9

Consistency

6.1

Reliability

N/A

Total Cost (Current Price)

$5.599 ↑ +11.2%

Tested at: $5.034

Total Output Tokens

600,042

Total Input Tokens

721,952

Input Price

$4.235 / 1M

Output Price

$4.235 / 1M

Cache Read Price

N/A

Cache Write Price

N/A

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 10

Attempt pass rate: 46.4%

Flaky tests

5

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

Response Time (avg)

9.69s

Response Time (max): 35.28s

Response Time (total): 155.07s

Wrong answer: 4 API error: 2 Extra formatting: 2 Did not follow instructions: 2

Hamster playing table tennis

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

#403 Grok 4.20 Multi Agent Beta

medium
Cost
$0.261
Time
123.4s
Tokens
199,344 tok

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-05-06 14:16 Re-test 3.9 N/A $5.599 ↑ Current run
2026-05-06 14:16 Re-test 4.8 N/A $5.599 ↑ Compare
2026-05-06 14:16 Re-test 6.6 N/A $5.599 ↑ Compare
2026-05-06 14:16 Re-test 6.6 N/A $5.074 Compare
2026-05-06 14:16 Suite changed 6.6 N/A $5.074 Compare
2026-04-11 01:19 First recorded run 6.4 N/A $5.074 Compare

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price Cache Read Price Cache Write Price
2026-06-04 15:40 $4.235 / 1M $4.235 / 1M N/A N/A

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

Category Breakdown

Category Score Consistency Tests Correct
Agentic 0.0 0.0
Anti-AI Tricks 6.9 5.8
Coding 3.3 3.3
Combined 1.5 5.0
Data parsing and extraction 10.0 10.0
Domain specific 2.9 7.2
General Intelligence 5.8 2.8
Instructions following 9.8 10.0
Puzzle Solving 6.7 7.9
Tool Calling 3.0 10.0
Trivia 0.0 0.0

Compared models