Claude Sonnet 5 pricing deep dive for teams. Sections: Announcement recap (Sonnet 5 launch July 1, 'cost parity' claim, introductory pricing $2/$10 through Aug 31, standard pricing $3/$15 effective Sept 1). The tokenizer gotcha (Sonnet 5 produces 30% more tokens than Sonnet 4.6 for identical text, so token-price parity = real cost increase for teams). Real cost analysis (calculate: 1M input tokens = $2 intro vs $3 standard; 1M output = $10 intro vs $15 standard; then apply 30% token inflation to see actual impact). Performance justification (Sonnet 5 near-Opus capability, compare to Opus pricing $15/$75, calculate cost-per-capability ratio). Budget planning framework: stay with Sonnet 4.6 (lower token count wins), switch to Sonnet 5 (better performance, higher tokens), or migrate to Opus (maximum capability, highest cost). Real-world example: your team's current spend on Sonnet 4.6, projected spend on Sonnet 5, and ROI of the performance uplift.
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