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Claude Sonnet 5 vs DeepSeek V4.1 Flash 1017

Claude Sonnet 5 leads on average score with 5.9 vs 5.8. DeepSeek V4.1 Flash 1017 has the lower benchmark cost at $0.055 vs $1.095. DeepSeek V4.1 Flash 1017 is faster at 3.46s vs 8.60s, with pass rates of 40.6% vs 36.2%.

Last updated at: 2026-10-19

Compared models

Rank
#292
Total Output Tokens
30,777
Response Time (avg)
8.60s
Total Cost
$1.095
Rank
#296
Total Output Tokens
16,806
Response Time (avg)
3.46s
Total Cost
$0.055
Recommended model DeepSeek V4.1 Flash 1017

Its score stays close to the best score here (5.8 vs 5.9), while costing about 20.2x less than Claude Sonnet 5.

Detailed comparison

Metric Claude Sonnet 5 Claude Sonnet 5 none Release: 2026-06-30 DeepSeek V4.1 Flash 1017 DeepSeek V4.1 Flash 1017 none Release: 2026-10-18
Score 5.9 5.8
Rank #292 #296
Reliability 10.0 10.0
Consistency 8.4 9.7
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 40.6% 36.2%
Flaky tests 5 1
Total Runs 69 69
Cost per result 15.642 0.678
Total Cost $1.095 $0.055
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 393,560 293,927
Output Tokens 30,466 16,806
Reasoning Tokens 311 0
Response Time (avg) 8.60s 3.46s
Response Time (max) 64.73s 43.95s
Response Time (total) 197.73s 79.48s
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.

#292 Claude Sonnet 5

none
Cost
$0.061
Time
53.7s
Tokens
6,172 tok

#296 DeepSeek V4.1 Flash 1017

none
Cost
$0.001
Time
7.1s
Tokens
2,012 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 4.6 7.9 22.2% 1 3.67s 10,590 1,864 0
DeepSeek V4.1 Flash 1017 5.6 9.9 33.3% 0 2.38s 7,284 3,922 0

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