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AnthropicMediumUltra

Claude Opus 4.5

Anthropic's most powerful model for highly complex tasks. Exceptional at research, analysis, and creative projects requiring deep expertise.

5 credits
per 1K tokens (avg)
200K context window
32K max output tokens
Vision capabilities
Deepest reasoning
Expert-level analysis
Creative excellence

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txt

Model Specifications

Context Window
200K
tokens
Max Output
33K
tokens
Training Cutoff
2025-04
Compatible SDK
Anthropic

Capabilities

Vision
Function Calling
Streaming
JSON Mode
System Prompt

Token Pricing (per 1M tokens)

Token TypeCreditsUSD Equivalent
Input Tokens5,000$5.00
Output Tokens25,000$25.00
Cached Tokens500$0.50

* 1 credit โ‰ˆ $0.001 (actual charges may vary based on usage)

Quick Start

curl -X POST "https://api.core.today/llm/anthropic/v1/messages" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer cdt_your_api_key" \
  -d '{
  "model": "claude-opus-4-5",
  "max_tokens": 4000,
  "system": "You are a world-class researcher with deep expertise across multiple domains.",
  "messages": [
    {
      "role": "user",
      "content": "Provide a comprehensive analysis of recent advances in quantum error correction, including implications for practical quantum computing."
    }
  ]
}'

Parameters

ParameterTypeRequiredDefaultDescription
messagesarrayYes-Array of message objects
max_tokensintegerYes-Maximum tokens in response (up to 32768)
systemstringNo-System prompt
temperaturefloatNo1.0Sampling temperature (0-1)

Examples

Research Analysis

Deep research analysis

curl -X POST "https://api.core.today/llm/anthropic/v1/messages" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer cdt_your_api_key" \
  -d '{
  "model": "claude-opus-4-5",
  "max_tokens": 4000,
  "system": "You are a world-class researcher with deep expertise across multiple domains.",
  "messages": [
    {
      "role": "user",
      "content": "Provide a comprehensive analysis of recent advances in quantum error correction, including implications for practical quantum computing."
    }
  ]
}'

Tips & Best Practices

1Best for tasks requiring deepest reasoning
2Use for high-stakes, complex decisions
3More expensive but highest quality
4Consider Claude Sonnet 4.5 for most tasks first

Use Cases

Advanced research
Expert-level writing
Complex strategy
Deep analysis
Creative projects
High-stakes decisions

Model Info

ProviderAnthropic
Version20251101
CategoryLLM
Price5 credits

API Endpoint

POST /llm/anthropic/v1/messages
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