Making advanced intelligence more abundant and affordable is central to our mission to ensure AGI benefits all of humanity. With the help of…

Making advanced intelligence more abundant and affordable is central to our mission to ensure AGI benefits all of humanity. With the help of GPT-5.6 Sol, we have made leaps in efficiency. Today, we are passing those gains on in the API with lower prices for Luna and Terra, and providing faster performance to Sol. These updates help everyone get more useful work from every dollar and move faster when time matters. https://x.com/OpenAI/status/2082577277246972300 After deployment, we applied GPT-5.6 Sol to advance the frontier of efficiency by making itself more efficient to run. The results: - 20% lower serving costs from production GPU kernel improvements. - 15%+ better token-generation efficiency from improved speculative decoding.

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Source: OpenAI (X) | 2026-07-30