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Anthropic: Claude Opus 4.8 vs DeepSeek: DeepSeek V4 Flash

Summary

Claude Opus 4.8 (medium) vs DeepSeek V4 Flash (high) benchmark comparison: Claude Opus 4.8 (medium) leads on average score with 8.8 vs 8.3. DeepSeek V4 Flash (high) has the lower benchmark cost at $0.027 vs $1.107. Claude Opus 4.8 (medium) is faster at 9.72s vs 45.85s, with pass rates of 84.1% vs 74.6%.

Recommended model: DeepSeek V4 Flash (high) - Its score stays close to the best score here (8.3 vs 8.8), while costing about 42.4x less than Claude Opus 4.8 (medium).

Last updated at: 2026-07-10

Metric Claude Opus 4.8 Claude Opus 4.8 medium Release: 2026-05-28 DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24
Score 8.8 8.3
Rank #15 #27
Reliability 10.0 10.0
Consistency 9.6 8.5
Tests Correct
Attempt pass rate 84.1% 74.6%
Flaky tests 1 4
Total Runs 63 63
Cost per result 6.512 0.299
Total Cost $1.107 $0.027
Input Price $5.000 / 1M $0.090 / 1M
Output Price $25.000 / 1M $0.180 / 1M
Total Input Tokens 61,007 39,745
Output Tokens 26,495 10,310
Reasoning Tokens 5,901 123,501
Response Time (avg) 9.72s 45.85s
Response Time (max) 38.03s 218.13s
Response Time (total) 204.19s 962.79s

Generation showcase

Hamster playing table tennis

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

#15 Claude Opus 4.8

medium
Cost
$0.057
Time
23.1s
Tokens
2,412 tok

#27 DeepSeek V4 Flash

high
Cost
$0.003
Time
93.1s
Tokens
7,926 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
Claude Opus 4.8 10.0 10.0 100.0% 0 3.95s 834 1,179 478
DeepSeek V4 Flash 8.3 10.0 75.0% 0 28.51s 540 140 7,770
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 15.33s 10,590 9,945 1,381
DeepSeek V4 Flash 7.8 10.0 66.7% 0 50.60s 7,279 395 34,862
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 9.8 10.0 100.0% 0 38.03s 23,561 5,260 1,588
DeepSeek V4 Flash 10.0 10.0 100.0% 0 76.57s 14,016 465 7,347
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 7.1 5.6 83.3% 1 12.29s 10,503 481 312
DeepSeek V4 Flash 10.0 10.0 100.0% 0 28.03s 7,290 201 1,179
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 10.0 33.3% 0 14.59s 975 7,477 900
DeepSeek V4 Flash 4.1 4.4 44.5% 2 100.31s 666 27 59,249
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 2.46s 708 237 0
DeepSeek V4 Flash 6.1 3.1 66.7% 1 25.15s 471 79 632
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.32s 909 373 320
DeepSeek V4 Flash 10.0 10.0 100.0% 0 15.36s 627 63 1,622
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.95s 894 791 483
DeepSeek V4 Flash 8.2 7.2 88.9% 1 26.11s 594 196 1,767
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 8.96s 11,775 301 225
DeepSeek V4 Flash 10.0 10.0 100.0% 0 74.73s 8,079 228 542
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 3.0 10.0 0.0% 0 6.14s 258 451 214
DeepSeek V4 Flash 3.0 10.0 0.0% 0 54.46s 183 8,516 8,531

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