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Mistral: Mistral Small 4 vs xAI: Grok 4.20

Summary

Mistral Small 4 vs Grok 4.20 benchmark comparison: Mistral Small 4 leads on average score with 5.1 vs 4.4. Grok 4.20 has the lower benchmark cost at $0.057 vs $0.068. Grok 4.20 is faster at 1.11s vs 9.40s, with pass rates of 44.4% vs 28.6%.

Recommended model: Mistral Small 4 - It has the strongest score in this comparison (5.1) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-02

Metric Mistral Small 4 Mistral Small 4 medium Release: 2026-03-16 Grok 4.20 Grok 4.20 none Release: 2026-03-31
Score 5.1 4.4
Rank #138 #160
Reliability 10.0 N/A
Consistency 6.9 8.5
Tests Correct
Attempt pass rate 44.4% 28.6%
Flaky tests 8 0
Total Runs 63 54
Cost per result 1.344 1.570
Total Cost $0.068 $0.057
Input Price $0.150 / 1M $1.250 / 1M
Output Price $0.600 / 1M $2.500 / 1M
Total Input Tokens 42,576 41,313
Output Tokens 24,184 1,923
Reasoning Tokens 84,678 0
Response Time (avg) 9.40s 1.11s
Response Time (max) 59.15s 6.04s
Response Time (total) 197.39s 19.96s

Generation showcase

Hamster playing table tennis

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

#138 Mistral Small 4

medium
Cost
$0.006
Time
47.9s
Tokens
9,857 tok

#160 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 5.6 3.8 66.7% 3 2.67s 708 4,055 4,778
Grok 4.20 4.8 10.0 25.0% 0 501ms 1,986 267 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 4.4 5.1 33.3% 2 39.98s 7,636 11,635 54,715
Grok 4.20 1.1 3.1 0.0% 0 1.22s 1,074 312 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 3.0 10.0 0.0% 0 25.25s 18,706 2,612 10,700
Grok 4.20 3.0 10.0 0.0% 0 6.04s 17,673 282 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 7.3 5.9 83.3% 1 1.23s 6,171 335 723
Grok 4.20 10.0 10.0 100.0% 0 522ms 7,749 207 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 5.3 7.2 44.4% 1 6.11s 742 2,621 6,904
Grok 4.20 3.0 10.0 0.0% 0 687ms 1,746 325 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 4.8 10.0 0.0% 0 2.05s 519 821 828
Grok 4.20 4.8 10.0 0.0% 0 659ms 819 83 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 7.3 5.8 83.3% 1 1.38s 729 540 1,031
Grok 4.20 6.3 10.0 50.0% 0 445ms 1,350 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 3.4 9.7 0.0% 0 2.17s 735 1,226 2,632
Grok 4.20 5.3 10.0 33.3% 0 473ms 1,671 198 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 10.0 10.0 100.0% 0 3.50s 6,420 321 810
Grok 4.20 10.0 10.0 100.0% 0 4.63s 7,245 189 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mistral Small 4 3.0 10.0 0.0% 0 5.92s 210 18 1,557
Grok 4.20 0.0 0.0 0.0% 0 0ms 0 0 0

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