Claude Sonnet 5 is Anthropic's fast workhorse model for coding, agents and everyday professional tasks. It offers a 1-million-token context window and up to 128,000 output tokens.

Anthropic originally announced $2 per million input tokens and $10 per million output tokens as an introductory rate. The company later decided to keep that price instead of moving to the planned $3/$15 rate.

For teams choosing within the Claude family, Sonnet sits between the low-cost Haiku tier and the more capable Opus and Fable models. The best choice depends on how often a harder model avoids retries or manual correction.

What this means

  • Sonnet 5 remains priced at $2 input and $10 output per million tokens.
  • It offers a 1M context window and 128K maximum output.
  • It is the balanced option in the current Claude lineup.

Read the announcement

We explained the update in plain English. Use the original source below for the full announcement and any later changes.

Read the original source