Anthropic deprecated claude-opus-4 and claude-sonnet-4 on April 14 with retirement set for June 15 Both models get replaced by their 4.6 versions with 1M context, adaptive thinking, and higher output limits Opus 4.6 supports 128K max output tokens versus Opus 4's 32K, and 1M context is included at standard pricing Sonnet 4.6 scores 79.6% on SWE-bench Verified, nearly matching Opus at 80.8% for most coding tasks The biggest API change is adaptive…
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