Compare · ModelsLive · 2 picked · head to head

DeepSeek V4 Flash vs GPT-5 Mini

Side by side · benchmarks, pricing, and signals you can act on.

Winner summary

DeepSeek V4 Flash wins 8 of 11 shared benchmarks. Leads in general · reasoning · math.

Category leads
general·DeepSeek V4 Flashcoding·GPT-5 Minireasoning·DeepSeek V4 Flashlanguage·GPT-5 Minimath·DeepSeek V4 Flashknowledge·DeepSeek V4 Flash
Hype vs Reality
DeepSeek V4 Flash
#39 by perf·#6 by attention
DESERVED
GPT-5 Mini
#108 by perf·#4 by attention
DESERVED
Best value
2.1x better value than GPT-5 Mini
DeepSeek V4 Flash
94.4 pts/$
$0.65/M
GPT-5 Mini
45.8 pts/$
$1.13/M
Vendor risk
One or more vendors flagged
DeepSeek logo
DeepSeek
$3.4B·Tier 1
Higher risk
OpenAI logo
OpenAI
$840.0B·Tier 1
Medium risk
Head to head
DeepSeek V4 FlashGPT-5 Mini
Dtbench
DeepSeek V4 Flash leads by +9.8
DeepSeek V4 Flash
77.3
GPT-5 Mini
67.5
LiveBench · Agentic Coding
DeepSeek V4 Flash leads by +15.0
DeepSeek V4 Flash
50.0
GPT-5 Mini
35.0
LiveBench · Coding
GPT-5 Mini leads by +6.8
DeepSeek V4 Flash
69.2
GPT-5 Mini
76.1
LiveBench · Data Analysis
DeepSeek V4 Flash leads by +18.4
DeepSeek V4 Flash
68.0
GPT-5 Mini
49.6
LiveBench · If
GPT-5 Mini leads by +1.1
DeepSeek V4 Flash
63.1
GPT-5 Mini
64.2
LiveBench · Language
DeepSeek V4 Flash leads by +1.0
DeepSeek V4 Flash
70.1
GPT-5 Mini
69.2
LiveBench · Mathematics
DeepSeek V4 Flash leads by +5.3
DeepSeek V4 Flash
79.7
GPT-5 Mini
74.4
LiveBench · Overall
DeepSeek V4 Flash leads by +6.2
DeepSeek V4 Flash
67.3
GPT-5 Mini
61.0
LiveBench · Reasoning
DeepSeek V4 Flash leads by +11.9
DeepSeek V4 Flash
70.6
GPT-5 Mini
58.6
Lmca
DeepSeek V4 Flash leads by +2.0
DeepSeek V4 Flash
42.2
GPT-5 Mini
40.2
WeirdML
GPT-5 Mini leads by +7.0
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
DeepSeek V4 Flash
45.6
GPT-5 Mini
52.7
Full benchmark table
BenchmarkDeepSeek V4 FlashGPT-5 Mini
Dtbench
77.367.5
LiveBench · Agentic Coding
50.035.0
LiveBench · Coding
69.276.1
LiveBench · Data Analysis
68.049.6
LiveBench · If
63.164.2
LiveBench · Language
70.169.2
LiveBench · Mathematics
79.774.4
LiveBench · Overall
67.361.0
LiveBench · Reasoning
70.658.6
Lmca
42.240.2
WeirdML
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
45.652.7
Pricing · per 1M tokens · projected $/mo at 10M tokens
ModelInputOutputContextProjected $/mo
DeepSeek logoDeepSeek V4 Flash$0.03$1.281.0M tokens (~524 books)$3.39
OpenAI logoGPT-5 Mini$0.25$2.00400K tokens (~200 books)$6.88