Claude Sonnet 5 Pricing Made Permanent
The launch price for Sonnet 5, $2 per million input tokens and $10 per million output tokens, stays instead of rising after August 31.

Details
- Sonnet 5 stays at $2 per million input tokens and $10 per million output tokens, the rate it launched at in June
- That rate was set to end August 31 and move to standard Sonnet pricing of $3 per million input and $15 per million output
- Nothing about the model changes. This is a price commitment, not a new version
Best for
Budgeting high-volume agent and automation work that runs on Sonnet 5 through the API.
When to use it
You held off building on Sonnet 5 because the cheap rate was scheduled to expire.
Who benefits
Developers and teams running large token volumes through the Sonnet 5 API.
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