Unverified50% confidenceFactExact time
Using OpenAI's GPT-5 Mini for conversations, billed by usage via API key, a 5 USD top-up can support a large number of conversations, with each reply costing less than one cent.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/13/2026
First Seen
Valid until: 10/27/2026
Sources
Related Entities
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UnverifiedThe inference cost of a single long conversation with a GPT-4-level model can reach several cents.72% similarUnverifiedAfter GPT-6 lands, ChatGPT free users and the Go tier ($8/month) can both call GPT-6 Luna in Chat conversations, with a very small gap in experience between the two, and Go's added value mainly shows up in a higher usage quota rather than in the model itself.72% similarUnverifiedTaking OpenAI's GPT series as an example, the system prompt that merely defines tool-calling specifications alone may consume 2,000 to 5,000 tokens.70% similar
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