Claude Sonnet 4.5 API
About
Integrate multimodal vision capabilities using Claude Sonnet 4.5, designed to process both text and images seamlessly. This model delivers cost-effective pricing at $2.99/1M input and $14.99/1M output tokens, native tool calling support. Access Claude Sonnet 4.5 via the NanoGPT API with up to 64K output tokens.
Capabilities
Input Modalities
textimagepdf
Output Modalities
text
Reasoning
No
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
64K
Tokens
Pricing
Standard (per 1M tokens)
Input
$2.99
Output
$14.99
Frequently Asked Questions
Claude Sonnet 4.5 by NanoGPT costs $2.99 per 1M input tokens and $14.99 per 1M output tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NANO_GPT_API_KEY
API Base URL
https://nano-gpt.com/api/v1