Expired85% confidenceFactTime unknown
GPT-5.5 Instant reduced hallucination rates in the medical and legal domains by approximately half.
1
Sources
85%
Confidence
Medium-term (~90 days)
Relevance
5/31/2026
First Seen
Valid until: 8/29/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedGPT 5.5 Instant has roughly halved its hallucination rate in medical and legal domains compared to its predecessor.80% similarUnverifiedUnder high-difficulty synthetic adversarial attack scenarios, GPT-5.5's refusal rate for biosecurity-related content dropped by approximately half.77% similarUnverifiedCompared to GPT-5.5, GPT-5.6 consumes approximately one-third of the Tokens per PR, and the median completion time is nearly halved.74% similarUnverifiedThe perplexity of the GPT series of models on Wikipedia text has decreased from approximately 29 for GPT-2 to an even lower level for GPT-4.73% similarUnverifiedA large number of users have reported that GPT-5.5 suffers from degraded output quality.72% similar
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