Pricing change·Oct 5 → Oct 12, 2026·Oct 12, 2026·AI & Machine Learning

Anthropic API launches Haiku 5.5 at $0.10/$0.50 per MTok, Haiku 4.5 goes Legacy

Haiku 5.5 replaces Haiku 4.5 at lower rates ($0.10/$0.50 per MTok in/out, tiered at 100K prompts); Haiku 4.5 moved to Legacy. Sonnet 5.5 cache read $0.20 to $0.10 per MTok.

AnthropicPricingPrice decrease

What changed

Price decrease

Haiku 5.5 replaces Haiku 4.5 at lower rates ($0.10/$0.50 per MTok in/out, tiered at 100K prompts); Haiku 4.5 moved to Legacy. Sonnet 5.5 cache read $0.20 to $0.10 per MTok.

Before and after

Oct 5, 2026 vs Oct 12, 2026

Pulse.

100%

What changed

Haiku 5.5 replaces Haiku 4.5 at lower rates ($0.10/$0.50 per MTok in/out, tiered at 100K prompts); Haiku 4.5 moved to Legacy. Sonnet 5.5 cache read $0.20 to $0.10 per MTok.

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