Claude Opus 4.5 (latest) API
About
Build advanced reasoning agents with Claude Opus 4.5 (latest), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $5.31/1M input and $26.57/1M output tokens, native tool calling support. Access Claude Opus 4.5 (latest) via the Cortecs API with up to 200K output tokens.
Capabilities
Input Modalities
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Output Modalities
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Limits
Context Window
200K
Tokens
Input Limit
200K
Tokens
Max Output
200K
Tokens
Pricing
Standard (per 1M tokens)
Input
$5.31
Output
$26.57
Caching (per 1M tokens)
Read
$0.53
Write
$6.64
Frequently Asked Questions
Claude Opus 4.5 (latest) by Cortecs costs $5.31 per 1M input tokens and $26.57 per 1M output tokens. Cached reads cost $0.53 per 1M tokens. Cache writes cost $6.64 per 1M tokens.
Model Details
ID
claude-opus4-5
Provider
CortecsFamily
claude-opus
Release Date
Nov 24, 2025
Knowledge Cutoff
May 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
CORTECS_API_KEY
API Base URL
https://api.cortecs.ai/v1