OpenAIExact tokenizer

GPT-5.4 mini API price

OpenAI charges $0.75 per 1M input tokens and $4.5 per 1M output tokens. Context window 400,000 tokens. A 10k-in / 2k-out request is about $0.0165.

Input$0.75 / 1M
Output$4.5 / 1M
Blended$1.69 / 1M
Context400,000
10k + 2k$0.0165
100k + 8k$0.1110

Who uses GPT-5.4 mini

Catalog prompts in the same model family, plus coding agents from this provider.

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