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Mistral: Mistral Small 4 vs OpenAI: GPT-5.5

Summary

Mistral Small 4 vs GPT-5.5 benchmark comparison: GPT-5.5 leads on average score with 9.3 vs 5.1. Mistral Small 4 has the lower benchmark cost at $0.068 vs $0.907. Mistral Small 4 is faster at 9.40s vs 9.76s, with pass rates of 44.4% vs 85.7%.

Recommended model: GPT-5.5 - It has the strongest score in this comparison (9.3) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-06-12

Metric Mistral Small 4 Mistral Small 4 medium Release: 2026-03-16 GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score 5.1 9.3
Rank #138 #5
Reliability 10.0 10.0
Consistency 6.9 10.0
Tests Correct
Attempt pass rate 44.4% 85.7%
Flaky tests 8 0
Total Runs 63 63
Cost per result 1.344 5.035
Total Cost $0.068 $0.907
Input Price $0.150 / 1M $5.000 / 1M
Output Price $0.600 / 1M $30.000 / 1M
Total Input Tokens 42,576 34,209
Output Tokens 24,184 2,046
Reasoning Tokens 84,678 22,460
Response Time (avg) 9.40s 9.76s
Response Time (max) 59.15s 56.19s
Response Time (total) 197.39s 204.92s

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

#5 GPT-5.5

low
Cost
$0.068
Time
37.0s
Tokens
2,339 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
GPT-5.5 10.0 10.0 100.0% 0 4.41s 606 238 1,020
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
GPT-5.5 10.0 10.0 100.0% 0 15.04s 7,302 423 6,402
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
GPT-5.5 10.0 10.0 100.0% 0 9.56s 11,019 303 717
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
GPT-5.5 10.0 10.0 100.0% 0 3.28s 7,140 228 157
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
GPT-5.5 5.3 10.0 33.3% 0 28.05s 723 69 11,609
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
GPT-5.5 10.0 10.0 100.0% 0 5.17s 477 133 245
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
GPT-5.5 9.9 10.0 100.0% 0 3.74s 660 93 415
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
GPT-5.5 10.0 10.0 100.0% 0 4.74s 642 279 954
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
GPT-5.5 10.0 10.0 100.0% 0 4.96s 5,445 250 101
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
GPT-5.5 3.0 10.0 0.0% 0 10.06s 195 30 840

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