Unverified50% confidenceFactExact time
v1.11.0 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.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/4/2026
First Seen
Valid until: 1/2/2027
Sources
Related Entities
Related Claims
UnverifiedSonnet 5 has switched to the tokenizer from Opus 4.7.76% similarUnverifiedAnthropic 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.75% similarUnverifiedA similar Sonnet 5 leak (codenamed Phoenix) appeared in February of this year, but the model that was ultimately officially released was Sonnet 4.6, not Sonnet 5.74% similarUnverifiedLeaked specifications show that Sonnet 5.5 has a 1 million token context window, a maximum output of 128,000 tokens, adaptive thinking enabled by default, and removal of forced tool calls.73% similarUnverifiedVersion v1.9.0 added support for the claude-sonnet-5-5 model.72% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/971377API
curl https://kongchang.com/api/v1/knowledge/claims/971377MCP
get_claim(id=971377)