GPT-5.5 vs Grok 4.1 Fast benchmark comparison: GPT-5.5 leads on average score with 9.3 vs 4.0. Grok 4.1 Fast has the lower benchmark cost at $0.008 vs $0.907. Grok 4.1 Fast is faster at 1.62s vs 9.76s, with pass rates of 85.7% vs 20.6%.
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.
Grok 4.1 FastGrok 4.1 FastnoneArchived model: this model is no longer updated or tested on new tests.Release: 2025-11-19
Score
9.3Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
4.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
Rank
#4
#166
Reliability
10.0First-attempt success score: 10.0 means no retryable target API or rate-limit failures before successful calls; tracked failures lower the score.…
10.0First-attempt success score: 10.0 means no retryable target API or rate-limit failures before successful calls; tracked failures lower the score.…
Consistency
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
7.9Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
Tests Correct
A test is fully passed only if every run passed for that test.Wrong answer: 3Response Time (avg)9.76sResponse Time (max)56.19sResponse Time (total)204.92sA test is fully passed only if every run passed for that test.…
A test is fully passed only if every run passed for that test.Wrong answer: 13Did not follow instructions: 3Response Time (avg)1.62sResponse Time (max)5.51sResponse Time (total)19.48sA test is fully passed only if every run passed for that test.…
Attempt pass rate
85.7%Attempt pass rate = passed attempts / total attempts across runs.…
20.6%Attempt pass rate = passed attempts / total attempts across runs.…
Flaky tests
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
3Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
Total Runs
63Total Runs…
57Total Runs…
Cost per result
5.035Shows the average cost per correct benchmark answer in cents (lower is better).…
0.273Shows the average cost per correct benchmark answer in cents (lower is better).…
Total Cost
$0.907Total Cost (Current Price)…
$0.008Total Cost (Current Price)…
Input Price
$5.000 / 1MInput Price…
$0.202 / 1MInput Price…
Output Price
$30.000 / 1MOutput Price…
$0.202 / 1MOutput Price…
Total Input Tokens
34,209Total Input Tokens…
36,608Total Input Tokens…
Output Tokens
2,046Output Tokens…
1,723Output Tokens…
Reasoning Tokens
22,460Reasoning Tokens…
0Reasoning Tokens…
Response Time (avg)
9.76sResponse Time (avg)…
1.62sResponse Time (avg)…
Response Time (max)
56.19sResponse Time (max)…
5.51sResponse Time (max)…
Response Time (total)
204.92sResponse Time (total)…
19.48sResponse Time (total)…
Generation showcase
Hamster playing table tennis
Prompt: Create a detailed SVG illustration of a hamster playing table tennis.
#4 GPT-5.5
low
Cost
$0.068
Time
37.0s
Tokens
2,339 tok
#166 Grok 4.1 Fast
none
Grok 4.1 Fast is deprecated. xAI recommends switching to Grok 4.3 (https://openrouter.ai/x-ai/grok-4.3)
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)4.41sResponse Time (max)6.32sResponse Time (total)17.64sA test is fully passed only if every run passed for that test.…
4.41sResponse Time (avg)…
606Total Input Tokens…
238Output Tokens…
1,020Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
3.2Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 3Did not follow instructions: 1Response Time (avg)1.07sResponse Time (max)1.73sResponse Time (total)2.15sA test is fully passed only if every run passed for that test.…
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)15.04sResponse Time (max)21.06sResponse Time (total)45.11sA test is fully passed only if every run passed for that test.…
15.04sResponse Time (avg)…
7,302Total Input Tokens…
423Output Tokens…
6,402Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
1.8Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
1.1Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
11.1%Attempt pass rate = passed attempts / total attempts across runs.…
1Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 1Response Time (avg)1.79sResponse Time (max)1.79sResponse Time (total)1.79sA test is fully passed only if every run passed for that test.…
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)9.56sResponse Time (max)9.56sResponse Time (total)9.56sA test is fully passed only if every run passed for that test.…
9.56sResponse Time (avg)…
11,019Total Input Tokens…
303Output Tokens…
717Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
3.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 1Response Time (avg)3.33sResponse Time (max)3.33sResponse Time (total)3.33sA test is fully passed only if every run passed for that test.…
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)3.28sResponse Time (max)5.13sResponse Time (total)6.56sA test is fully passed only if every run passed for that test.…
3.28sResponse Time (avg)…
7,140Total Input Tokens…
228Output Tokens…
157Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)943msResponse Time (max)943msResponse Time (total)943msA test is fully passed only if every run passed for that test.…
5.3Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
33.3%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 2Response Time (avg)28.05sResponse Time (max)56.19sResponse Time (total)84.16sA test is fully passed only if every run passed for that test.…
28.05sResponse Time (avg)…
723Total Input Tokens…
69Output Tokens…
11,609Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
5.9Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
7.2Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
55.6%Attempt pass rate = passed attempts / total attempts across runs.…
1Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 2Response Time (avg)1.06sResponse Time (max)1.06sResponse Time (total)1.06sA test is fully passed only if every run passed for that test.…
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)5.17sResponse Time (max)5.17sResponse Time (total)5.17sA test is fully passed only if every run passed for that test.…
5.17sResponse Time (avg)…
477Total Input Tokens…
133Output Tokens…
245Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
4.4Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
9.9Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Did not follow instructions: 1Response Time (avg)1.08sResponse Time (max)1.08sResponse Time (total)1.08sA test is fully passed only if every run passed for that test.…
9.9Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)3.74sResponse Time (max)3.99sResponse Time (total)7.48sA test is fully passed only if every run passed for that test.…
3.74sResponse Time (avg)…
660Total Input Tokens…
93Output Tokens…
415Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
3.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Did not follow instructions: 1Wrong answer: 1Response Time (avg)685msResponse Time (max)685msResponse Time (total)685msA test is fully passed only if every run passed for that test.…
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)4.74sResponse Time (max)5.61sResponse Time (total)14.21sA test is fully passed only if every run passed for that test.…
4.74sResponse Time (avg)…
642Total Input Tokens…
279Output Tokens…
954Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
3.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 3Response Time (avg)1.10sResponse Time (max)1.36sResponse Time (total)2.21sA test is fully passed only if every run passed for that test.…
10.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
100.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.No failed answers.Response Time (avg)4.96sResponse Time (max)4.96sResponse Time (total)4.96sA test is fully passed only if every run passed for that test.…
4.96sResponse Time (avg)…
5,445Total Input Tokens…
250Output Tokens…
101Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
2.8Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
1.6Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
33.3%Attempt pass rate = passed attempts / total attempts across runs.…
1Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 1Response Time (avg)5.51sResponse Time (max)5.51sResponse Time (total)5.51sA test is fully passed only if every run passed for that test.…
3.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 1Response Time (avg)10.06sResponse Time (max)10.06sResponse Time (total)10.06sA test is fully passed only if every run passed for that test.…
10.06sResponse Time (avg)…
195Total Input Tokens…
30Output Tokens…
840Reasoning Tokens…
Grok 4.1 FastArchived model: this model is no longer updated or tested on new tests.
3.0Summarizes broad quality across our full private benchmark suite, so ranking reflects consistent performance.…
10.0Consistency score reflects run-to-run stability (10 = very consistent, even if consistently wrong).…
0.0%Attempt pass rate = passed attempts / total attempts across runs.…
0Flaky tests had mixed outcomes across runs (at least one pass and one fail).…
A test is fully passed only if every run passed for that test.Wrong answer: 1Response Time (avg)731msResponse Time (max)731msResponse Time (total)731msA test is fully passed only if every run passed for that test.…