GPT-6.1 Sol cached input at $0.10/M: the line that sets your agent bill
victor_explore · x · 2026-10-01
OpenAI's new GPT-6.1 Sol charges $0.10 per million tokens for cached context an agent has already sent—95% below the normal input price. Developer victorexplore (of agent company aitape) points out that long-running agents re-read the same files all day, so this cache line—not the headline price—determines your bill. Sam Altman says the model is nearly as smart as GPT-6 Astra at a fifth of the price, and much cheaper on long tasks.
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