Unverified50% confidenceDecision RuleExact time
Anthropic officially recommends: use Sonnet for everyday coding, bug fixing, high-throughput routine development, and polishing documents/slides/spreadsheets; use Opus for tasks requiring complex judgment, long-chain agentic coding, knowledge work, or the toughest problems.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/12/2026
First Seen
Valid until: 1/10/2027
Sources
Related Entities
Related Claims
UnverifiedThe criterion proposed by the creator: if a task has a clear definition of done, try Sonnet first; if it requires creativity or needs the model to help define "what counts as done," use Opus.68% similarUnverifiedClaude 3.5 Sonnet 以精确的指令遵循和较低的幻觉率著称，适合准确性要求极高的文档分析和合规审查类任务67% similarUnverifiedIn the demo, the system classified the planning task difficulty as moderate and subsequently selected Claude Sonnet to handle it.65% similarUnverifiedAnthropic simultaneously released Opus 5.5 and Sonnet 5.5, and official benchmarks show that the two score very close to each other on agentic coding tasks.63% similarUnverifiedClaude Sonnet 5.5 has improved efficiency on coding tasks and agentic use cases compared to its predecessor Sonnet 5.63% similar
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