Pricing change·Oct 4 → Jan 1, 2026·Q4 2025·AI & Machine Learning

Anthropic API Cuts Flagship Opus Model Prices by 67% in Major Update to Version 4.5, Launching New Pricing Structure

AnthropicPricingPrice decreasePlan renamedPrice increasePlan removedNew plan

What changed

Price decrease

Flagship Opus model output price decreased from $75/MTok (v4.1) to $25/MTok (v4.5) - 67% reduction

Plan renamed

Haiku model upgraded from version 3.5 to version 4.5

Price decrease

Flagship Opus model input price decreased from $15/MTok (v4.1) to $5/MTok (v4.5) - 67% reduction

Price increase

Haiku output price increased from $4/MTok (v3.5) to $5/MTok (v4.5) - 25% increase

Plan removed

Opus 4.1 removed from latest models section and moved to legacy models

New plan

Opus 4.5 model launched as new flagship 'Most intelligent model for building agents and coding' with pricing of $5/MTok input and $25/MTok output

Price increase

Haiku input price increased from $0.80/MTok (v3.5) to $1/MTok (v4.5) - 25% increase

Oct 4, 2025 vs Jan 1, 2026

Pulse.

100%

Change 1 of 9 · price decreased

Flagship Opus model output price decreased from $75/MTok (v4.1) to $25/MTok (v4.5) - 67% reduction

See the before/after screenshots and every marked-up change.