Raw data basis: large SPY/QQQ options history used to generate paper-aligned examples.
SFT seed set: 2,027 paper-exact examples.
Hardening set: 7,577 additional schema/threshold examples.
Held-out hardening eval: 134 cases.

Training

Held-Out Eval

Latest hardening eval summary:

Metric	Result
Rows	134
JSON parse OK	105 / 134
Regime label OK	31 / 54
Pattern schema responses	mixed; many outputs still include reasoning or miss exact schema

This checkpoint improved training loss but is not yet production-grade. Known weaknesses:

Can still emit <think> / reasoning before JSON.
Can generate invalid regime labels such as ambiguous aliases.
Can miss exact JSON schema on pattern-description tasks.
Needs a surgical schema-only hardening pass before being treated as the leading GEX model.

Research and experimentation with GEX pattern/regime classification prompts.