Introducing Sonnet 4.6
- Source
- anthropic.com
- Author
- Anthropic News
- Date
Sonnet 4.6 reportedly matches or beats the larger Opus 4.5 in real coding workflows while staying at the same $3/$15 per-million- price point, making it a strong default choice for agentic coding and long- tasks without the Opus price tag.
- context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
- AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
- token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
“Performance that would have previously required reaching for an Opus-class model—including on real-world, economically valuable office tasks —is now available with Sonnet 4.6.”
“In Claude Code, our early testing found that users preferred Sonnet 4.6 over Sonnet 4.5 roughly 70% of the time.”
“Users even preferred Sonnet 4.6 to Opus 4.5, our frontier model from November, 59% of the time.”
“It approaches Opus-level intelligence at a price point that makes it more practical for far more tasks.”
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