Anthropic › Claude Sonnet 4.5 › Pricing

Claude Sonnet 4.5 pricing

API list price by Anthropic · same on Amazon Bedrock, Azure, Claude Platform on AWS · checked Oct 26, 2026
Benchmarks and alternatives →
$3 / $15per 1M tokens in / out
$0.30cache read · −90%
$1.50 / $7.50batch · −50%
#63on OpenRouter by tokens · 239.4B / week

Price sheetper 1M tokens

Input$3list
Output$15
Cache read$0.30−90% vs input
Cache write · 5 min$3.75+25% vs input
Cache write · 1 h$6+100% vs input
Batch input$1.50−50%
Batch output$7.50−50%
Context · max output1M · 64Ktokens

Where to buy5 providers · per 1M tokens

ProviderInputOutputContext
Amazon Bedrock$3$151M
Anthropiclab$3$15—
Azure$3$15200K
Claude Platform on AWS$3$151M
Google$3$151M

In Anthropic's line-upper 1M in / out

Claude Haiku 5.5$0.10 / $0.50−97%
Claude Sonnet 5.5$2 / $10−33%
Claude Sonnet 4.5$3 / $15this model
Claude Opus 5.5$4 / $20+33%
Claude Fable 5.1$10 / $503.3×
Claude Mythos 5$10 / $503.3×
Claude Mythos 5.1$10 / $503.3×
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All Claude API prices →

Cheaper for the same workvs Sonnet 4.5

Claude Sonnet 5.5 max-33%score ×2.9$5.46
Gemini 4 Argon high-33%score ×2.7$1.62
GPT-6.1 Sol max-33%score ×2.7$0.72
GPT-6.1 Terra max-67%score ×2.5$0.40
Muse Spark 1.3 max-67%score ×2.5$3.69
All alternatives and what breaks when you switch →

Pricing questions

How much does Claude Sonnet 4.5 cost?›

$3 per 1M input tokens and $15 per 1M output tokens on Anthropic's API and Amazon Bedrock, Azure, Claude Platform on AWS. Cached input is $0.30. Batch requests cost $1.50 / $7.50.

Is Claude Sonnet 4.5 free to use?›

There is no free API tier.

How much does prompt caching save?›

Cache reads cost $0.30 per 1M, 90% below the input price. Writing to the cache costs $3.75 per 1M (5m TTL).

What is a cheaper alternative to Claude Sonnet 4.5?›

Claude Sonnet 5.5 at max effort costs -33% per task with a score ×2.9 on Humanity's Last Exam.