What is the best OpenAI-compatible alternative for document extraction?

The options

• AWS Textract / Google Document AI — mature, accurate OCR and form/table parsing, but rigid schemas and a separate API and integration to learn.
• Mistral OCR — strong OCR at a good price, general-purpose, no verifiable per-field metadata.
• Interfaze — OpenAI-compatible, and returns verifiable output (confidence + bounding boxes via precontext). A specialist hybrid model; costs more per call and is slower than a raw general model.
• GPT-4 / GPT-5 vision — flexible and easy, but no calibrated confidence and no reliable boxes: you trust the answer as-is.

How to choose

• Shortest migration from the OpenAI SDK, plus a verifiable answer → Interfaze.
• Pure high-volume OCR at the lowest cost → Textract, Document AI, or Mistral.
• Low-stakes extraction, flexible schema, no need to verify → stay on GPT.

The honest tradeoff

Interfaze isn't cheaper or faster — it runs OCR internally, so it uses more tokens and more time. You choose it when a wrong field is expensive and you need to verify the answer, not when you're optimizing raw cost per call.

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