Claude Opus 4 - AI Model Details | How the F AI

Model Capabilities

Text

Context Window: 200K Tokens

Text

Max Output: 32,000 Tokens

Function Calling / Tools

Function Calling

Large Context

Model Size: Unknown params

Architecture: Transformer

Input / 1M tk

$15.0000

Output / 1M tk

$75.0000

Est. cost in USD

**Be Specific & Clear:** Detail the desired outcome, format, tone, and constraints.
**Provide Context:** Explain the background, your role, or the purpose (e.g., "Act as a helpful architect...").
**Specify Format:** Request bullet points, JSON, markdown, code blocks, etc.
**Use Examples (Few-Shot):** Provide 1-3 examples of input/output for complex tasks.
**Iterate:** Refine prompts based on the model's responses. Don't expect perfection first try.

Function Calling Example

"Book a meeting room for 3 people tomorrow at 2 PM for 1 hour. Find available rooms first."

// Model should trigger 'find_rooms' then 'book_room'