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Claude Opus 4.8 (medium) vs Grok 4.5 (high)

Grok 4.5 (high) leads on average score with 9.0 vs 8.8. Claude Opus 4.8 (medium) has the lower benchmark cost at $1.983 vs $2.252. Claude Opus 4.8 (medium) is faster at 12.97s vs 72.30s, with pass rates of 83.3% vs 86.4%.

Last updated at: 2026-08-29

Rank
#26
Total Output Tokens
51,927
Response Time (avg)
12.97s
Total Cost
$1.983
Rank
#21
Total Output Tokens
324,462
Response Time (avg)
72.30s
Total Cost
$2.252
Recommended model Claude Opus 4.8 (medium)

Its score stays close to the best score here (8.8 vs 9.0), while responding about 5.6x faster than Grok 4.5 (high).

Detailed comparison

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 8.8 9.0
Rank #26 #21
Reliability 10.0 10.0
Consistency 9.2 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 83.3% 86.4%
Flaky tests 2 3
Total Runs 66 66
Cost per result 11.662 12.565
Total Cost $1.983 $2.252
Input Price $5.000 / 1M $2.000 / 1M
Output Price $25.000 / 1M $6.000 / 1M
Total Input Tokens 138,448 152,175
Output Tokens 40,765 5,655
Reasoning Tokens 11,162 318,807
Response Time (avg) 12.97s 72.30s
Response Time (max) 70.54s 676.83s
Response Time (total) 285.29s 1590.56s
Parameters ~5T total (~500B active) ~1.7T total (~170B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#26 Claude Opus 4.8

medium
Cost
$0.057
Time
23.1s
Tokens
2,412 tok

#21 SpaceXAI: Grok 4.5

high
Cost
$0.015
Time
29.7s
Tokens
2,737 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
Claude Opus 4.8 10.0 10.0 100.0% 0 15.33s 10,590 9,945 1,381
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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