AnthropicFastUltra

Claude 3.5 Sonnet

Anthropic's most intelligent model. Best-in-class for complex reasoning, nuanced understanding, and coding tasks with exceptional instruction following.

4 credits

per 1K tokens (avg)

200K context window

8K max output tokens

Vision capabilities

Computer use (beta)

Superior code generation

Exceptional instruction following

Model Specifications

Context Window

200K

tokens

Max Output

tokens

Training Cutoff

2024-04

Compatible SDK

Anthropic

Capabilities

Vision

Function Calling

Streaming

JSON Mode

System Prompt

Token Pricing (per 1M tokens)

Token Type	Credits	USD Equivalent
Input Tokens	3,000	$3.00
Output Tokens	15,000	$15.00
Cached Tokens	300	$0.30

* 1 credit ≈ $0.001 (actual charges may vary based on usage)

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{
  "model": "claude-3.5-sonnet",
  "input": {
    "model": "claude-3-5-sonnet-20241022",
    "max_tokens": 4000,
    "system": "You are an expert analyst. Provide detailed, structured analysis.",
    "messages": [
      {
        "role": "user",
        "content": "Analyze the key themes and implications of this research paper: [paper text]"
      }
    ]
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`messages`	array	Yes	-	Array of message objects with role and content
`model`	string	Yes	claude-3-5-sonnet-20241022	Model identifier
`max_tokens`	integer	Yes	-	Maximum tokens in response (required, up to 8192)
`system`	string	No	-	System prompt for setting behavior
`temperature`	float	No	1.0	Sampling temperature (0-1)
`stream`	boolean	No	false	Enable streaming responses
`tools`	array	No	-	List of tools the model can use

Examples

Document Analysis

Analyze complex documents

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{
  "model": "claude-3.5-sonnet",
  "input": {
    "model": "claude-3-5-sonnet-20241022",
    "max_tokens": 4000,
    "system": "You are an expert analyst. Provide detailed, structured analysis.",
    "messages": [
      {
        "role": "user",
        "content": "Analyze the key themes and implications of this research paper: [paper text]"
      }
    ]
  }
}'

Code Generation

Generate production-quality code

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{
  "model": "claude-3.5-sonnet",
  "input": {
    "model": "claude-3-5-sonnet-20241022",
    "max_tokens": 4000,
    "messages": [
      {
        "role": "user",
        "content": "Create a TypeScript React component for a data table with sorting, filtering, and pagination. Use modern best practices."
      }
    ],
    "temperature": 0.3
  }
}'

Tool Use

Use tools/functions with Claude

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{
  "model": "claude-3.5-sonnet",
  "input": {
    "model": "claude-3-5-sonnet-20241022",
    "max_tokens": 1000,
    "messages": [
      {
        "role": "user",
        "content": "Look up the current stock price of Apple."
      }
    ],
    "tools": [
      {
        "name": "get_stock_price",
        "description": "Get the current stock price for a given symbol",
        "input_schema": {
          "type": "object",
          "properties": {
            "symbol": {
              "type": "string",
              "description": "Stock ticker symbol"
            }
          },
          "required": [
            "symbol"
          ]
        }
      }
    ]
  }
}'