Expired75% confidenceFactExact time

GPT-5.6 has improved the prompt caching mechanism by adding explicit cache breakpoints, with a minimum cache retention of 30 minutes and output speeds of up to hundreds of tokens per second.

5

Sources

75%

Confidence

Medium-term (~90 days)

Relevance

7/10/2026

First Seen

Valid until: 10/8/2026(expired)

Sources

GPT-5.6 Three-Model Benchmark: How Close Are Sol/Terra/Luna to Claude?

bilibili烟神殿副殿主7/9/2026

Related Claims

UnverifiedThe core upgrade of GPT-5.6 compared to its predecessor lies in higher information density per token, enabling accurate understanding of intent and stable output even when prompts are vague and open-ended.80% similar UnverifiedGPT-5.6's Ultra mode coordinates four agents working in parallel by default, trading more tokens for stronger results and shorter completion times.77% similar UnverifiedGPT-5.6's default context has been increased to 350K tokens, and paired with an improved compression algorithm, its resistance to context contamination has been enhanced.77% similar

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