Claude Haiku Free API — Fastest Claude Model, Starter pack

Free Access to Claude Haiku 4.5

Claude Haiku 4.5 is available for free with ClaudeStore's Starter pack. Haiku is Anthropic's fastest and most affordable model — ideal for high-volume applications, quick code edits, classification, and tasks where speed matters more than maximum reasoning depth.

Haiku 4.5 Performance

Quick Start

import anthropic

client = anthropic.Anthropic(
    api_key="YOUR_FREE_KEY",
    base_url="https://api2.claudestore.store"
)

# Fast classification with Haiku
message = client.messages.create(
    model="claude-haiku-4.5",
    max_tokens=100,
    messages=[
        {"role": "user", "content": "Classify this support ticket as bug/feature/question: 'The login button doesn't work on mobile'"}
    ]
)
print(message.content[0].text)  # "bug"

export ANTHROPIC_API_KEY="YOUR_FREE_KEY"
export ANTHROPIC_BASE_URL="https://api2.claudestore.store"
claude --model claude-haiku-4.5

Best Use Cases for Haiku 4.5

• High-volume processing — batch analysis, data extraction, log parsing
• Classification & tagging — sentiment analysis, ticket routing, content moderation
• Quick code edits — small fixes, test generation, simple refactoring
• Chatbots & assistants — low-latency conversational interfaces
• Prototyping — rapid iteration during development

FAQ