Loading page
Claude Sonnet 4.5 API pricing on OpenRouter
Every OpenRouter Claude Sonnet 4.5 rate we track, compared against 6 providers serving the same model.
Input from /1M
$1.50
Output /1M
$7.50
Price rank
#2 of 6
Last updated
September 18, 2026
The cheapest Claude Sonnet 4.5 input price we currently track is $1.20/1M on Velokey.
OpenRouter Claude Sonnet 4.5 rates
Prices per 1M tokens. Batch and cached-input rates are shown where the provider publishes them.
| Mode | Input | Output |
|---|---|---|
| Batch | $1.50/1M | $7.50/1M |
| Standard | $3.00/1M | $15.00/1M |
About Claude Sonnet 4.5
- Creator
- Anthropic
- Context
- 200K
- Modalities
- text, image
- Knowledge cutoff
- Jan 2025
- Tool calling
- Yes
Claude Sonnet 4.5 on other providers
About OpenRouter
OpenRouter provides a unified API for accessing hundreds of AI models from multiple providers. It aggregates models from OpenAI, Anthropic, Google, Meta, Mistral, and many others, offering a single endpoint with automatic fallback routing and provider optimization.
Frequently Asked Questions
How much does Claude Sonnet 4.5 cost on OpenRouter?
OpenRouter serves Claude Sonnet 4.5 from $1.50 per 1M input tokens, across 2 tracked pricing modes. Prices are collected daily — see the table above for current input, output, and cached-input rates.
Is OpenRouter the cheapest way to run Claude Sonnet 4.5?
OpenRouter ranks #2 of 6 providers we track serving Claude Sonnet 4.5. The cheapest input price right now is on Velokey. Price is only one factor — throughput, latency, and context limits differ between providers.
Does OpenRouter offer batch or cached pricing for Claude Sonnet 4.5?
We track 2 Claude Sonnet 4.5 offerings from OpenRouter. Batch and cached-input rates appear in the table above when the provider publishes them; blank cells mean we have no current figure for that mode.