Model catalogue · Microsoft

Phi

Vendor: phi-4, as of 29 September 2026

Microsoft's small model line under an open licence, complemented by a vision variant and a reasoning tier. This is the class for the legwork on receipts: reading invoice data, checking mandatory details, capturing scans - economical to run, but too small for long pleadings. Because the weights are openly available, processing ends where the model runs. In dedicated operation on reserved hardware in a German data centre the chain is therefore closed; the party bound is then the data centre operator, via the undertaking under section 203(4) of the German Criminal Code. When running on your own hardware no third party participates at all, and the disclosure question under section 203 does not arise.

Available through us

Everything section 203 requires is settled, including the provider's confidentiality undertaking, and nothing is stored at the provider, apart from a technical cache of a few minutes for Claude (zero retention). You do not have to clarify anything further.

What it is good for

  • MIT licence - operation, modification and redistribution without asking the vendor
  • Small enough for a dedicated instance with low running costs
  • The vision variant reads scanned receipts without a separate OCR service

Where it stops

  • 14 to 15 billion parameters - too small for long pleadings and complex argument
  • No legal fine-tuning; references must be verified as a matter of principle
  • Short context window compared with the large models in this catalogue

Status through us

The same model, procured differently, is a different legal position. The status above refers to procurement through us; processing takes place in Germany.

Which route carries it, with which instrument and under which condition, we set out in full to the firm before it commissions us - section 203(4) requires that the chain can be checked, not that it is published. The full matrix, with the sources behind every route, can be requested in the German catalogue after confirming your e-mail address, and we go through it in the conversation.

Is Phi the right fit?

We go through your tasks and the route that carries them - and say plainly where it does not.

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