Developer builds unified Python abstraction to swap AI providers without code rewrites

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A developer grew frustrated after spending an entire weekend refactoring code just to switch from OpenAI's GPT-4 to Anthropic's Claude 3, due to incompatible SDKs, authentication methods, and response formats. The core problem was that each provider returns data differently — for example, OpenAI uses response.choices[0].message.content while Anthropic uses response.content[0].text. To solve this, the developer designed a thin abstraction layer in Python using an abstract base class that defines a single unified interface for sending prompts and receiving responses. Separate provider-specific classes handle the underlying SDK differences, while the rest of the application only interacts with the shared interface. The approach allows developers to swap AI providers by changing a single configuration, without touching the broader codebase.

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