[Claude Sonnet 5 Permanently Retains Launch Price, One-Third Cheaper Than Previous Version] According to monitoring by Beating, Anthropic has decided not to increase the API price of Claude Sonnet 5, making the launch price its long-term price. The cost remains $2 per million input tokens and $10 per million output tokens. The previously planned price hike to $3 and $15 on September 1 has been canceled. On a per-unit basis, Sonnet 5 is one-third cheaper than Sonnet 4.6 in the long term, and its price is only 40% of Opus 4.8. Anthropic stated that it has already matched Opus 4.8 in performance for certain high-intensity tasks. This low price was originally intended as a transitional measure. Sonnet 5 uses a new tokenizer (text segmentation rules), which can result in up to 35% more tokens for the same input. At the time, Anthropic claimed that the launch price would keep the upgraded costs roughly unchanged. Now, this pricing tier has been made permanent. [Original Article Link]