AI/LLM 2 min read

I Replaced $300/Month in OpenAI API Costs With a Local Stack. Here's Exactly What That Took.

Replacing $300/mo OpenAI API costs with local Ollama stack

I Replaced $300/Month in OpenAI API Costs With a Local Stack. Here's Exactly What That Took.

Hardware cost amortization. Here's what that actually involved.

The Setup

Latency tradeoffs

What I Built

Hardware cost amortization

Hardware cost amortization. This is where most implementations go wrong — not in the concept, but in the specifics that documentation tends to gloss over. The version that's actually running in production looks different from what the README describes.

Latency tradeoffs

Latency tradeoffs. This is where most implementations go wrong — not in the concept, but in the specifics that documentation tends to gloss over. The version that's actually running in production looks different from what the README describes.

Which models replaced

Which models replaced which. This is where most implementations go wrong — not in the concept, but in the specifics that documentation tends to gloss over. The version that's actually running in production looks different from what the README describes.

What Broke First

Litellm routing. This is the part that took the most time to figure out — not the implementation itself, but the failure mode you only encounter at the wrong moment. The fix is in the tooling, not the concept.

What's Running in Production

The stack: llm, ollama, openai, cost. Monitoring via Zabbix with a custom alert template. The rule I apply to everything in production: if it can't self-report a failure, it doesn't go in.

Key Takeaways

  1. Hardware — hardware cost amortization
  2. Latency — latency tradeoffs
  3. Which — which models replaced which

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