Unverified50% confidenceReleaseExact time
Claude Opus 5.5 was launched on September 22, 2026, reaching the level of Claude Fable 5.1 on most work while costing 40% less to run than Opus 5.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/19/2026
First Seen
Valid until: 11/2/2026
Sources
Related Entities
Related Claims
UnverifiedClaude Opus 5.5 is positioned as the price-performance workhorse of the Claude 5.5 series.80% similarUnverifiedClaude Opus 5.5 is available today on all platforms.76% similarUnverifiedClaude Opus 5.5 represents the largest iteration since Opus went from 4.5 to 4.6.74% similarUnverifiedClaude Fable 5 was released only 11 days after the previous generation Opus 4.8.73% similarUnverifiedAnthropic released Claude Opus 5.5 on September 22, priced at approximately 40% of GPT-6 Astra (the $4 tier).73% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1066090API
curl https://kongchang.com/api/v1/knowledge/claims/1066090MCP
get_claim(id=1066090)