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DeepSeek v4 Pro vs GPT-5.5

DeepSeek v4 Pro is cheaper on output tokens, while GPT-5.5 offers a larger context window. Choose DeepSeek v4 Pro or GPT-5.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecDeepSeek v4 ProGPT-5.5
ProviderFrogBotFrogBot
Input / 1M tokens$1.74$2.50
Output / 1M tokens$3.48$15.00
Context window128K272K
Parameters1.6T
Open weightsNoNo
ReleasedApr 2026Mar 2026

FAQ

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