GPT-6 Astra Model Routing

Use GPT-6 Astra for GPT work by default. GPT-6.1 Sol is an exception for very easy, deterministic bulk collection, transformation, or status-command execution that requires no semantic judgment. Ambiguous tasks stay on Astra.

This is the owner's operating policy, not a claim that Sol cannot perform more complex work. It applies to GPT workers under any lead, at every permitted delegation depth, and inside missions launched through codex-delegate. Anthropic choices remain with fable5-model-routing.

Routing Decision

Use Sol only when every condition holds:

1. The packet fixes the inputs, procedure, and output format.
2. No step requires choosing a source, interpreting meaning, diagnosing a cause, ranking importance, or deciding the next action.
3. A count, hash, schema, source comparison, or other explicit mechanical criterion checks the result.
4. An unexpected result returns to Astra with the raw evidence and completed actions.