Self-Hosting LLMs vs API: A $500, 3-Month Cost and Performance Comparison

Short summary

A developer recounts spending $500 and three months trying to self-host LLMs, only to find APIs cheaper, faster, and more reliable for typical use cases. Self-hosting requires ongoing maintenance for model updates, security patches, and scaling, while APIs like GPT-4o-mini cost fractions of a cent per request. Self-hosting remains valid for strict privacy needs, massive scale, or heavy fine-tuning, but most developers building chatbots or internal tools are better served by APIs.

• •Self-hosting LLMs cost $500+ over 3 months with unreliable results vs <$1/month API costs
• •APIs offer 100+ tokens/sec vs ~20 tokens/sec on a 3090, plus better reasoning quality
• •Self-hosting justified only for strict privacy, massive scale, or heavy fine-tuning needs

Generated with AI, which can make mistakes.