AI MIDDLEWARE FOR FULL FLEXIBILITY

ONE to connect them all

izz.ONE provides a unified connector to thousands of LLMs with just one API. It includes a automatic LLM selector based on your custom LLM list.

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Consistent Quality through model changes

LLM switches or updates will not break your answers

Every model- and every silent provider update answers a little differently. ONE makes those differences visible before your users feel them, so a swap never becomes a regression.

→ A/B testing for prompts and workflows
→ Quality alerts
→ Central prompt library

Answer quality - same prompt

  • GPT-5
  • Claude Opus
  • Gemini 1.5

Quality dropped by 21 % after the last provider update. Switched to GPT-5 automatically.

The best model for the job

Stop burning tokens on large models for tiny jobs

Token spend - last 30 days

1.2 K classifications
  • Flagship LLM
  • izz.ONE LLM router

-75% token costs at the same output quality with the right strategy and tools

Teams often default to the biggest, most expensive model for everything, even a one-line classification. izz.ONE routes each task to the right model that still passes your quality bar, and shows savings in Euros.

→ Automatic LLM router for optimized model selections
→ Automatic datasource routing to avoid extra runs
→ Full cost transparency and monitoring

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