GPT-5.6 Sol Ultrafast Reportedly Launching Soon

soumitrashukla9 · x · 2026-07-18

A post claims that **GPT-5.6 Sol Ultrafast** is "coming soon," accompanied by a comparison chart emphasizing that it is **6.7x faster** than the standard Sol in real-world tasks, approaching but not quite hitting **750 TPS**. The chart illustrates the **intelligence vs. single-task cost** trade-off across OpenAI's different model tiers (Sol / Terra / Luna). The main takeaway: the new version offers significant improvements in inference efficiency and cost-effectiveness while maintaining high intelligence. Another source notes that OpenAI previously stated the **Cerebras-powered version of Sol would roll out to select customers this month**.

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