Unverified50% confidenceBenchmarkExact time
According to actual test data, the Harness framework doubles the overall response speed, and applying it to the previous-generation GPT-5.1 model also improves speed by approximately 60%.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/11/2026
First Seen
Valid until: 12/10/2026
Sources
Related Entities
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UnverifiedGPT-4o achieves approximately a 2x improvement in inference speed compared to GPT-4 Turbo.72% similarUnverifiedGPT-5.6 introduced an 'UltraFast' mode with inference speed improved by 2 to 3 times72% similarUnverifiedGPT-5.6 introduces Max reasoning intensity and Ultra mode, and expands the context window from 1 million to 1.5 million tokens, a 43% increase.72% similar
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