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Claude Sonnet 5.5 (max) vs DeepSeek V4.1 Flash 1017 (low)

The average score is effectively tied at 9.2 vs 9.2. DeepSeek V4.1 Flash 1017 (low) has the lower benchmark cost at $0.355 vs $8.557. DeepSeek V4.1 Flash 1017 (low) is faster at 32.55s vs 84.26s, with pass rates of 82.6% vs 78.3%.

Last updated at: 2026-10-19

Compared models

Rank
#34
Total Output Tokens
758,707
Response Time (avg)
84.26s
Total Cost
$8.557
Rank
#36
Total Output Tokens
523,482
Response Time (avg)
32.55s
Total Cost
$0.355
Recommended model DeepSeek V4.1 Flash 1017 (low)

It has the best score here (9.2), while costing about 24.2x less than Claude Sonnet 5.5 (max).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 max Release: 2026-09-29 DeepSeek V4.1 Flash 1017 DeepSeek V4.1 Flash 1017 low Release: 2026-10-18
Score 9.2 9.2
Rank #34 #36
Reliability 10.0 10.0
Consistency 9.4 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 82.6% 78.3%
Flaky tests 2 3
Total Runs 69 69
Cost per result 47.536 2.214
Total Cost $8.557 $0.355
Input Price $2.000 / 1M $0.150 / 1M
Output Price $10.000 / 1M $0.600 / 1M
Cache Read Price $0.200 / 1M $0.003 / 1M
Cache Write Price $2.500 / 1M N/A
Total Input Tokens 484,627 267,122
Output Tokens 11,026 7,369
Reasoning Tokens 747,681 516,113
Response Time (avg) 84.26s 32.55s
Response Time (max) 488.39s 443.63s
Response Time (total) 1937.91s 748.62s
Parameters ~1T total (~100B active) ~748B total (~16B active)
Availability Closed Open source

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#34 Claude Sonnet 5.5

max
OpenRouter returned no showcase content (finish_reason: length).
Cost
$0.000
Time
571.7s
Tokens
0 tok

#36 DeepSeek V4.1 Flash 1017

low
Cost
$0.006
Time
63.8s
Tokens
11,236 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 Sonnet 5.5 10.0 10.0 100.0% 0 55.26s 10,608 580 70,730
DeepSeek V4.1 Flash 1017 10.0 10.0 100.0% 0 27.01s 7,509 323 45,628

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