Claude Sonnet 4.5 API Pricing Calculator

Model Details

Released

Sep 29, 2025

Status

Legacysunset Nov 30, 2026

Context Length

200,000

Superseded By

Claude Sonnet 5.5

Where is Claude Sonnet 4.5 a perfect fit?

Claude Sonnet 4.5 is built for high reliability and balanced performance, offering near-Opus quality at lower cost. Ideal for:
- Production chatbots requiring consistent, high-quality responses
- Coding, debugging, and developer workflows with improved accuracy
- Content generation with better coherence and fewer errors
- Data extraction, transformation, and structured outputs
- Enterprise automation with reliability and scalability needs
- Applications needing strong reasoning without premium pricing

Quick Model Estimate

Tokens Characters Words

Model

Provider

Modality

Service Tier

Context Size

Input Tokens

(USD 3.0000 per 1M tokens)

Output Tokens

(USD 15.0000 per 1M tokens)

No. of API Calls

Your Claude Sonnet 4.5 Cost Estimate

💰 Total Cost

—

for 1000 input + 1000 output tokens

📥 Input (1000 × $3.000000) —

📤 Output (1000 × $15.000000) —

Cost Breakdown

📥 Input 📤 Output

Prices are watched for changes and checked against the provider's own page.

Pricing

Provider ↕	Modality ↕	Service Tier ↕	Input Price (per 1M tokens) ↕	Output Price (per 1M tokens) ↕	Cached Input (per 1M tokens) ↕	Cached Output (per 1M tokens) ↕	Context Size ↕	View
Anthropic	Text	Standard	$3.0000	$15.0000	$0.3000	$6.0000	200,000 tokens	→
Anthropic	Text	Batch	$1.5000	$7.5000	N/A	N/A	200,000 tokens	→

No longer offered by

The last prices each provider charged for Claude Sonnet 4.5 before it stopped offering it. These are no longer on offer. Each row links to that provider's price history.

Provider ↕	Ended ↕	Modality ↕	Service Tier ↕	Input Price (per 1M tokens) ↕	Output Price (per 1M tokens) ↕	Cached Input (per 1M tokens) ↕	Context Size ↕	View
Perplexity	17th Oct 2026Provider stopped offering it	Text	Standard	$3.0000	$15.0000	$0.3000	200,000 tokens	→

Recent changes

When Claude Sonnet 4.5 was newly listed on a provider, moved to legacy or deprecated, or retired.

17th Oct 2026 Discontinued
Perplexity stopped offering Anthropic's Claude Sonnet 4.5.
4th Oct 2026 Legacy
Anthropic moved Claude Sonnet 4.5 to legacy, retiring it on 30th Nov 2026, with Claude Sonnet 5.5 as the suggested replacement.

See all changes, new releases and retirements →

Other Models in the Claude 4.5 Family

Claude Haiku 4.5

Active

Multimodal · 200,000 context

Claude Opus 4.5

Active

Multimodal · 200,000 context

FAQs about Claude Sonnet 4.5

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

Claude Sonnet 4.5 costs between $1.50 and $3.00 per million input tokens, and between $7.50 and $15.00 per million output tokens. The range covers Standard and Batch pricing.

What does a typical workload cost with Claude Sonnet 4.5?

1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $6.75 with Claude Sonnet 4.5 at its lowest rates. Use the calculator on this page for your own volumes.

Where can I use Claude Sonnet 4.5?

Claude Sonnet 4.5 is available through Anthropic, from $1.50 per million input tokens.

Is there cheaper Claude Sonnet 4.5 pricing than the standard rate?

Yes. Batch pricing for Claude Sonnet 4.5 starts at $1.50 per million input tokens against $3.00 on the standard tier, about 50% lower.

What is Claude Sonnet 4.5's context window?

Claude Sonnet 4.5 has a context window of 200,000 tokens.

Is Claude Sonnet 4.5 still available?

Claude Sonnet 4.5 is a legacy model and is scheduled for retirement on 30 November 2026. The replacement is Claude Sonnet 5.5.