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Mercury 2.5 Preview (medium) vs Grok 4.6 (low)

Grok 4.6 (low) leads on average score with 6.9 vs 6.8. Mercury 2.5 Preview (medium) has the lower benchmark cost at $0.039 vs $0.781. Mercury 2.5 Preview (medium) is faster at 6.66s vs 16.44s, with pass rates of 66.7% vs 66.7%.

Last updated at: 2026-11-10

Compared models

Rank
#231
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.039
Rank
#218
Total Output Tokens
42,315
Response Time (avg)
16.44s
Total Cost
$0.781
Recommended model Mercury 2.5 Preview (medium)

Its score stays close to the best score here (6.8 vs 6.9), while costing about 20.3x less than Grok 4.6 (low).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02 Grok 4.6 Grok 4.6 low Release: 2026-08-12
Score 6.8 6.9
Rank #231 #218
Reliability 10.0 10.0
Consistency 9.6 9.6
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 66.7%
Flaky tests 1 1
Total Runs 69 69
Cost per result 0.244 5.205
Total Cost $0.039 $0.781
Input Price $0.040 / 1M $2.000 / 1M
Output Price $0.150 / 1M $6.000 / 1M
Cache Read Price N/A $0.500 / 1M
Cache Write Price N/A N/A
Total Input Tokens 397,291 263,427
Output Tokens 6,355 6,006
Reasoning Tokens 143,752 36,309
Response Time (avg) 6.66s 16.44s
Response Time (max) 74.63s 57.97s
Response Time (total) 153.29s 378.14s
Parameters ~100B ~1.7T total (~170B active)
Availability Closed 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.

#231 Mercury 2.5 Preview

medium
Cost
$0.001
Time
2.7s
Tokens
2,241 tok

#218 SpaceXAI: Grok 4.6

low
Cost
$0.011
Time
26.0s
Tokens
1,941 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
Mercury 2.5 Preview 7.8 10.0 66.7% 0 3.86s 7,839 552 22,126
Grok 4.6 5.5 7.1 44.4% 1 21.69s 9,579 349 7,740

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