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Span-02 (default) vs Grok 4.20

Grok 4.20 leads on average score with 3.4 vs 2.8. Span-02 (default) has the lower benchmark cost at $0.001 vs $0.057. Grok 4.20 is faster at 1.11s vs 1.36s, with pass rates of 26.1% vs 26.1%.

Last updated at: 2026-10-17

Compared models

Rank
#419
Total Output Tokens
0
Response Time (avg)
1.36s
Total Cost
$0.001
Rank
#407
Total Output Tokens
1,923
Response Time (avg)
1.11s
Total Cost
$0.057
Recommended model Grok 4.20

It has the strongest score in this comparison (3.4) and the best overall balance of cost and response time across 2 models.

Detailed comparison

Metric Span-02 Span-02 default Release: 2026-10-17 Grok 4.20 Grok 4.20 none Release: 2026-03-31
Score 2.8 3.4
Rank #419 #407
Reliability 10.0 N/A
Consistency 5.2 7.8
Attempts 36/69 54/69
Tests Correct
Attempt pass rate 26.1% 26.1%
Flaky tests 0 0
Total Runs 36 54
Cost per result 0.012 1.570
Total Cost $0.001 $0.057
Input Price $0.010 / 1M $1.250 / 1M
Output Price $0.000 / 1M $2.500 / 1M
Cache Read Price N/A $0.200 / 1M
Cache Write Price N/A N/A
Total Input Tokens 70,626 41,313
Output Tokens 0 1,923
Reasoning Tokens 0 0
Response Time (avg) 1.36s 1.11s
Response Time (max) 5.71s 6.04s
Response Time (total) 16.37s 19.96s
Parameters 26B total (4B active) ~1T total (~100B active)
Availability Open source Closed

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

Model generation showcase

Hamster playing table tennis

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

#419 Span-02

default
No showcase result has been generated for this model yet.
Cost
N/A
Time
-
Tokens
0 tok

#407 xAI: Grok 4.20

none
Cost
$0.004
Time
6.5s
Tokens
1,367 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Span-02 4.9 6.7 33.3% 0 544ms 32,136 0 0
Grok 4.20 1.1 3.1 0.0% 0 1.22s 1,074 312 0

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