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StepFun: Step 3.7 Flash vs xAI: Grok 4.3

Summary

The average score is effectively tied at 7.7 vs 7.7. Step 3.7 Flash (low) has the lower benchmark cost at $0.341 vs $0.614. Step 3.7 Flash (low) is faster at 15.74s vs 47.51s, with pass rates of 68.3% vs 71.4%.

Recommended modelStep 3.7 Flash (low)It has the best score here (7.7), while costing about 1.8x less than Grok 4.3 (medium).

Last updated at: 2026-07-14

Metric Step 3.7 Flash Step 3.7 Flash low Release: 2026-05-29 Grok 4.3 Grok 4.3 medium Release: 2026-05-01
Score 7.7 7.7
Rank #51 #48
Reliability 10.0 10.0
Consistency 8.4 8.5
Tests Correct
Attempt pass rate 68.3% 71.4%
Flaky tests 4 4
Total Runs 63 63
Cost per result 2.840 4.724
Total Cost $0.341 $0.614
Input Price $0.200 / 1M $1.250 / 1M
Output Price $1.150 / 1M $2.500 / 1M
Total Input Tokens 40,101 44,472
Output Tokens 289,325 1,981
Reasoning Tokens 0 221,382
Response Time (avg) 15.74s 47.51s
Response Time (max) 124.75s 216.69s
Response Time (total) 330.63s 997.68s

Generation showcase

Hamster playing table tennis

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

#51 Step 3.7 Flash

low
Invalid SVG
Cost
$0.004
Time
25.3s
Tokens
3,072 tok

#48 xAI: Grok 4.3

medium
Cost
$0.009
Time
19.0s
Tokens
3,661 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
Step 3.7 Flash 8.2 7.2 88.9% 1 9.46s 7,437 18,685 0
Grok 4.3 5.9 7.7 44.4% 1 41.23s 8,340 1,028 31,226

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