Anthropic API Pricing at a Glance (2026) Quick answer: Anthropic API pricing in 2026 is per million tokens (MTok), billed separately for input and output. Claude Opus 4.8 (launched May 28, 2026) costs $5.00/$25.00 per MTok — same rate as Opus 4.7, with Fast Mode now at $10/$50 per MTok (down from $30/$150 on Opus 4.7). Claude Sonnet 4.6 costs $3.00/$15.00.
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