Unverified60% confidenceFactExact time
Harbor was originally a basic tool built with Sonnet 3.5.
2
Sources
60%
Confidence
Long-term
Relevance
9/15/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedAnthropic officially positions Sonnet 5.5 as an upgrade to Sonnet 5, with a 30% speed improvement and cost reductions of up to 30% for most workloads.60% similarUnverifiedSonnet 5.5 became the first Sonnet model to complete Pokémon Red solely by reading and operating through screenshots.59% similarPartially VerifiedSonnet 5.5 is on par with Opus 5.5 in offensive and defensive cybersecurity capabilities, making it the first model in the Sonnet series to adopt equivalent cybersecurity protection mechanisms.57% similarUnverifiedv1.11.0 marks the deprecation of Sonnet 4.5 in the Chores (routine maintenance) section, meaning Sonnet 4.5-related configurations have been deprecated at the client level.56% similar
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