Anthropic followed Opus 4.6 with Sonnet 4.6 at the same price as Sonnet 4.5, featuring significantly improved coding, consistency, and instruction following.
Developers with early access preferred Sonnet 4.6 over its predecessor by a wide margin. It shares the 1M context window and extended thinking capabilities of Opus 4.6, making it one of the most capable models in its price tier.
Sonnet 4.6 is now the default model across Anthropic's products, replacing Sonnet 4.5. The pricing remains at $3/$15 per million tokens (input/output).
Visit the model page for full specifications and benchmark comparisons.