Anthropic
Claude Sonnet 4.5
Developed by Anthropic, Claude Sonnet 4.5 is a premier large language model that excels in multi-step reasoning, complex coding, computer use, and specialized domains such as finance.
Pricing
| Billing unit | UniRoute | Market |
|---|---|---|
| Input | $0.85 | $3.00 |
| Output | $4.275 | $15.00 |
per 1M tokens
About this model
UniRoute offers Claude Sonnet 4.5 pricing significantly lower than official rates. By replacing complex monthly commitments with a flexible credit-based, pay-as-you-go system, developers can deploy claude-sonnet-4-5 at scale while maintaining predictable cost control over every million tokens.
Deep dive
Cost-Effective Claude Sonnet 4.5 API Pricing
UniRoute offers Claude Sonnet 4.5 pricing significantly lower than official rates. By replacing complex monthly commitments with a flexible credit-based, pay-as-you-go system, developers can deploy claude-sonnet-4-5 at scale while maintaining predictable cost control over every million tokens.
Detailed API Documentation and Technical Support
The Claude Sonnet 4.5 API documentation provides a streamlined guide for rapid integration, featuring precise request parameters, exhaustive field descriptions, and structured response formats. A dedicated support team is available to assist with troubleshooting and performance optimization for production environments.
Stable Infrastructure with High-Concurrency Support
Engineered for stable task execution, the Claude 4.5 Sonnet API infrastructure ensures consistent response speeds and 99.9% uptime. The architecture effectively manages parallel operations, making Claude Sonnet 4.5 API a dependable choice for automated workflows and complex agentic loops.
Call it with one request
Works with the OpenAI SDK — just change the base URL.
curl https://api.uniroute.dev/v1/chat/completions \
-H "Authorization: Bearer $UNIROUTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5",
"messages": [{ "role": "user", "content": "Hello!" }],
"stream": true
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