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DeepSeek V4.1 Flash vs GPT-5.4

DeepSeek V4.1 Flash is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose DeepSeek V4.1 Flash or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecDeepSeek V4.1 FlashGPT-5.4
ProviderCortecsCortecs
Input / 1M tokens$0.20$2.90
Output / 1M tokens$0.60$15.45
Context window1M1.1M
Parameters——
Open weightsYesNo
ReleasedSep 2026Mar 2026

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.