Claude 4.5 Opus Thinking API
About
Build advanced reasoning agents with Claude 4.5 Opus Thinking, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $5.00/1M input and $25.01/1M output tokens, native tool calling support. Access Claude 4.5 Opus Thinking via the NanoGPT API with up to 32K output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Limits
Context Window
200K
Tokens
Input Limit
200K
Tokens
Max Output
32K
Tokens
Pricing
Standard (per 1M tokens)
Input
$5.00
Output
$25.01
Frequently Asked Questions
Claude 4.5 Opus Thinking by NanoGPT costs $5.00 per 1M input tokens and $25.01 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