The cost of using GPT-5 through API is $ 1.25 per million input coins and $ 10 for one million weekend, which can be compared with the prices of Google Gemini 2.5 Pro. At the same time, Openai is much cheaper than anthropics, starting from $ 15 for the entry and $ 75 for the output.
Developers who have previously tested the GPT-5 note a profitable price ratio. Some even call the new Openai policy “price killer .. This can provoke competitors to reduce prices.
Source: Ferra

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