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Packaging change·Dec 29 → Mar 30, 2026·Q1 2026·AI & Machine Learning

Anthropic API Drops Tiered Pricing for Sonnet 4.6, Goes Flat Rate

AnthropicPackagingPackage change

What changed

Package change

Sonnet 4.6 drops the 200K-token tiered pricing used by Sonnet 4.5. Flat $3/$15 MTok replaces tiers of $3/$6 input and $15/$22.50 output. Extended caching tiers ($7.50/$0.60) also removed.

Before and after

Dec 29, 2025 vs Mar 30, 2026
Pulse.
100%
What changed

Sonnet 4.6 drops the 200K-token tiered pricing used by Sonnet 4.5. Flat $3/$15 MTok replaces tiers of $3/$6 input and $15/$22.50 output. Extended caching tiers ($7.50/$0.60) also removed.

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Week 12, 2026 · Anthropic API simplifies pricing, removes volume-based tiersAnthropic API launches Managed Agents at $0.08 per session-hour of runtime · Week 17, 2026

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