Claude Sonnet 4.5 Pricing Update

Anthropic updated the pricing for Claude Sonnet 4.5 and subsequent models, likely affecting costs for users.

Apr 22, 2026

At a glance

Decide impact, cost movement, and the next step before reading the full diff.

Affected

Anthropic · claude-sonnet-4

Pricing Change

Cost impact

High · 4/5

Estimated from pricing and window changes

Migration pressure

Low · 0/5

No explicit deadline yet

Next step

Keep monitoring the official rollout

Do this first, then review field-level details

Impact summary

Use explicit levels instead of abstract charts to judge this change.

Cost

High

Score 4/580%

Quality

Low

Score 0/50%

Migration

Low

Score 0/50%

Reliability

Low

Score 0/50%

Compliance

Low

Score 0/50%

The update specifically mentions Claude Sonnet 4.5 and all subsequent models, indicating a potential change in cost structure.

Changes

Review changed fields first, then decide whether you need full before/after values.

Before

self.__next_f.push([1,"69:I[612580163,[\"10369\",\"static/chunks/10369-4e9587210869c10e.js\",\"73317\",\"static/chunks/73317-013097c0e3ff56ba.js\",\"19664\",\"static/chunks/19664-990fc82cf8918a59.js\",\"62290\",\"static/chunks/62290-7015aec14b64a0f6.js\",\"27217\",\"static/chunks/27217-92bdf9ffecff327f.js\",\"66043\",\"static/chunks/66043-14bd8d3d77d575dd.js\",\"73698\",\"static/chunks/73698-9c681cc34734958e.js\",\"84127\",\"static/chunks/84127-38a9d6d618c93509.js\",\"25556\",\"static/chunks/25556-7cb4f4b11f852cd4.js\",\"63592\",\"static/chunks/63592-dabce480e169100b.js\",\"77298\",\"static/chunks/77298-7329305a7963b911.js\",\"55522\",\"static/chunks/55522-9eed04e71699bac6.js\",\"12549\",\"static/chunks/12549-cef4e4cc275ce847.js\",\"16439\",\"static/chunks/16439-96b0e186045695c0.js\",\"94882\",\"static/chunks/94882-f19dbfa736f1691b.js\",\"32536\",\"static/chunks/32536-6067233beeb0ea96.js\",\"13714\",\"static/chunks/13714-b7f28ddc893e08c6.js\",\"45312\",\"static/chunks/45312-481c204f83543c03.js\",\"20679\",\"static/chunks/20679-882c68cc3abed51d.js\",\"13429\",\"static/chunks/13429-5a6b55a257b039d9.js\",\"67098\",\"static/chunks/67098-a3c9f577a59f6a2f.js\",\"1589\",\"static/chunks/1589-d1a5cf73fe768a05.js\",\"63307\",\"static/chunks/63307-90cd256715243619.js\",\"97131\",\"static/chunks/97131-ef5781d02b2894f7.js\",\"91606\",\"static/chunks/91606-645164d9c334c549.js\",\"66015\",\"static/chunks/66015-d0a966065f1df486.js\",\"78126\",\"static/chunks/78126-5ffd33c066583c24.js\",\"1914\",\"static/chunks/1914-2edbb59186e81d60.js\",\"12263\",\"static/chunks/12263-50d4c0f314bae521.js\",\"92508\",\"static/chunks/92508-c402fd896496515d.js\",\"52308

After

self.__next_f.push([1,"49:[\"$\",\"$L5f\",null,{\"children\":[\"Starting with \",[\"$\",\"strong\",null,{\"className\":\"font-semibold\",\"children\":\"Claude Sonnet 4.5 and all subsequent models

Sources

Each source focuses on what it confirms, without repeating the whole article.

docs

Anthropic Models Docs

self.__next_f.push([1,"49:[\"$\",\"$L5f\",null,{\"children\":[\"Starting with \",[\"$\",\"strong\",null,{\"className\":\"font-semibold\",\"children\":\"Claude Sonnet 4.5 and all subsequent models

Open

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