Model Cost Profile

Anthropic: Claude Sonnet 4.5

Developer: anthropic

Pricing updated Mar 11, 2026

Input rank: #303Output rank: #310

Live Pricing

Input: $3.00

Output: $15.00

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Pricing via OpenRouter API · Last synced Mar 11, 2026

Anthropic's Claude Sonnet 4.5 features an extensive context window of 1,000,000 tokens, making it ideal for applications requiring detailed document analysis and long-form content generation. With an input price of $3.00 per million tokens and an output price of $15.00 per million tokens, teams can effectively budget for projects that involve large-scale data processing and complex conversational AI tasks. This model is particularly suited for enterprises needing to handle intricate workflows, such as legal document review or comprehensive customer support interactions.

👁 Vision🔧 Tool Calling📋 Structured Output🧠 Reasoning

Context Window

1,000,000

Tokens

Input Price / 1M

$3.00

Prompt tokens

Output Price / 1M

$15.00

Completion tokens

Intelligence (MMLU)

Benchmark Pending

Massive Multitask Language Understanding

Side-by-Side Pricing Table

Usage Type	Price / 1M Tokens
Input (Prompt)	$3.00
Output (Completion)	$15.00

Compare with Anthropic: Claude 3.7 Sonnet Compare with Anthropic: Claude 3.7 Sonnet (thinking)Compare with Anthropic: Claude Sonnet 4

Price History

Anthropic: Claude Sonnet 4.5 Pricing Trend

Input / 1M tokens0.0%Output / 1M tokens0.0%

Mar 7 — Mar 11

Current Input / 1M

$3.00

Current Output / 1M

$15.00

Cost Calculator

Estimate monthly spend for Anthropic: Claude Sonnet 4.5 based on your workload.

Input tokens / month

01.0B

Output tokens / month

0500M

Estimated Monthly Cost

$255

25M input + 12M output tokens

Same Workload on Other Models

Arcee AI: Trinity Large Preview (free)$0.00−$255 Arcee AI: Trinity Mini (free)$0.00−$255 Google: Gemma 3 12B (free)$0.00−$255 Google: Gemma 3 27B (free)$0.00−$255

Cheaper Alternatives to Compare

Quick links for cost-down decisions before production rollout.

Anthropic: Claude Sonnet 4.5 vs Arcee AI: Trinity Large Preview (free)Anthropic: Claude Sonnet 4.5 vs Arcee AI: Trinity Mini (free)Anthropic: Claude Sonnet 4.5 vs Google: Gemma 3 12B (free)Anthropic: Claude Sonnet 4.5 vs Google: Gemma 3 27B (free)

FAQ

Common pricing and benchmark questions for Anthropic: Claude Sonnet 4.5.

How much does Anthropic: Claude Sonnet 4.5 cost per 1M input tokens?

Anthropic: Claude Sonnet 4.5 input pricing is $3.00 per 1M tokens based on the latest synced provider data.

How much does Anthropic: Claude Sonnet 4.5 cost per 1M output tokens?

Anthropic: Claude Sonnet 4.5 output pricing is $15.00 per 1M tokens based on the latest synced provider data.

What context window does Anthropic: Claude Sonnet 4.5 support?

Anthropic: Claude Sonnet 4.5 supports a context window of 1,000,000 tokens.

How can I compare Anthropic: Claude Sonnet 4.5 with cheaper alternatives?

Use the comparison links on this page to open direct model-vs-model pricing and benchmark pages, then evaluate monthly spend projections for your workload.