OpenAI, Anthropic and Google Gen AI SDKs

Official Python clients for hosted models (GPT, Claude, Gemini).

Easy

import anthropic
client = anthropic.Anthropic()          # reads ANTHROPIC_API_KEY
msg = client.messages.create(model="claude-sonnet-5-5", max_tokens=300,
        messages=[{"role": "user", "content": "Explain a Zener diode in one paragraph."}])
print(msg.content[0].text)

Keep API keys in environment variables, never in code.

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