Eikos-4B — single-pass typed decisions

Interactive demo for caiovicentino1/Eikos-4B, an open typed-decision model fine-tuned from Qwen3.5-4B. Give it a state (the evidence) and a typed question — noul / boolean (yes-no), choice (one of N options), or score (ordinal levels) — and it answers in a single forward pass with a calibrated probability distribution over the options plus a confidence value you can use to abstain. No text is generated at decision time: the readout takes the next-token logits over the option labels and applies a softmax with the shipped calibration (T = 1).

This Space reproduces the authors' reference readout (SemIf prompt, label logits, calib.json calibration, serve v1.2) with transformers, as documented on the model card. Option labels run A–Z, then AA, AB, … (588 single-token labels), so the 4B reads up to 100 options in one pass (max_one_pass in decision_config.json); longer lists run a short tournament. Up to 26 options the prompt is the same as in v1.0/v1.1.

Larger model: caiovicentino1/Eikos-27B. Code and server: github.com/caiovicentino/eikos. Demo originally built by @multimodalart at Hugging Face.

Focus: global finance, trading and trade finance — apply a stated rule, policy or rulebook to a case (order limits, margin, payments limits, KYC/AML, documentary credits, VAT/GST …), entity-level financial sentiment, answer verification. Scope limit: it applies the rules it is given; it does not predict prices. Trained in English and Portuguese (Spanish held out as zero-shot). Not legal, tax or investment advice.