Unverified50% confidenceFactExact time
Claude Code's performance update compresses conversation history with Gzip and pre-warms the session when the user starts typing, bringing local session response startup time down from about 4 seconds to 1.33 seconds (roughly a 3x improvement) and Claude sessions from nearly 17 seconds to 6 seconds (roughly a 2.8x improvement).
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/17/2026
First Seen
Valid until: 1/15/2027
Sources
Claude Fable 5.5 Leaked: Single Prompt Generates Interactive Worlds — Early Signs of AGI?
youtubeWorldofAI10/17/2026
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Related Claims
UnverifiedSending a message in co-work dropped from 1 second to 48 milliseconds, and Claude Code on desktop dropped from 250 milliseconds to 52 milliseconds72% similarUnverifiedClaude Code's fast cache is retained for only one hour, after which the entire conversation needs to be reprocessed67% similarVerifiedGPT-4o's response latency has been significantly reduced to approximately 320 milliseconds, approaching the natural reaction speed of human conversation.67% similar
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