Short answer: for an OpenAI, Claude, or Gemini chatbot API comparison, choose Claude 3.5 Sonnet for quality or GPT-4o-mini for speed and budget; decide only after checking each tenant’s region, retention, deletion, and processor boundaries.

The boundary comes first.

Claude 3.5 Sonnet is the safest default when conversational quality decides the outcome; GPT-4o-mini is the practical choice for a budget-conscious tenant with acceptable quality. For a healthtech chatbot that helps score candidates against a job rubric, however, the model ranking is only half the architecture. Region, retention, deletion, and processor boundaries decide whether the comparison is safe to operate per tenant.

The useful design keeps candidate data inside an explicit tenant boundary, sends the smallest possible rubric-scoring context to a provider, and records cost and latency metadata beside the tenant request.…