OpenAIExact tokenizer

GPT-5 API price

OpenAI charges $1.25 per 1M input tokens and $10 per 1M output tokens. Context window 400,000 tokens. A 10k-in / 2k-out request is about $0.0325.

Input$1.25 / 1M
Output$10 / 1M
Blended$3.44 / 1M
Context400,000
10k + 2k$0.0325
100k + 8k$0.2050

Who uses GPT-5

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

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