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DeepSeek V3.1 vs GPT-5 mini

Same prompt, two tokenizers: see live token counts, cost per request, and token boundaries side by side.

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Counts include each model's own chat-template overhead.

128 chars

DeepSeek V3.1

DeepSeek · 131k context
…tokens

GPT-5 mini

OpenAI · 400k context
…tokens

At a glance

  • DeepSeek V3.1: 131k-token context, $0.28/1M input · $0.42/1M output.
  • GPT-5 mini: 400k-token context, $0.25/1M input · $2/1M output.
  • Token counts differ between models because each vendor trains its own tokenizer vocabulary — the same text can split into more or fewer pieces. Prices as of 2026-07-07.

DeepSeek V3.1 token counter →GPT-5 mini token counter →Compare all models →