DeepSeekDeepSeek V4 FlashVSOpenAIGPT-5.4 Pro
Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing DeepSeek V4 Flash and GPT-5.4 Pro directly in their respective provider playgrounds to see which fits your specific prompt styles best.
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Benchmarks & Scores
Coding (swe-bench-pro)
49.1%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+12.4%)
80%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$0.17Input: $0.14 | Output: $0.28Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
N/Acomplex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
67.6%graduate-level science QA
Cost & Context
Cost (per 1M tokens)1.3x cheaper
$0.14Input: $0.05 | Output: $0.40Context Window
400k tokensFrequently Asked Questions about DeepSeek V4 Flash vs GPT-5.4 Pro
GPT-5.4 Pro is cheaper than DeepSeek V4 Flash. GPT-5.4 Pro has a blended cost of $0.14/1M tokens, which is about 1.3x cheaper than DeepSeek V4 Flash at $0.17/1M tokens.
Related Matchups
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