Prose routes
These are the checked-in defaults and complexity overrides. An operator’s explicit stage override takes precedence.
Complexity is computed from declared output length, output type, template category, and style/readability settings. It is a routing signal rather than a measured assessment of draft quality. Choosing Premium does not mean every request runs on Opus.
Supporting stages
Call Writer retains the Sonnet 5 tier default. Conditional stages run only when the workflow requires them. Gemini complexity overrides remain in the routing configuration; they have not been removed from the system. Haiku is no longer a tier-level generation default.
Structured planning and research use a schema-constrained protocol. Sonnet 5 remains available for that protocol; the prose routes use Sonnet 5.5 and Opus 5.5 without assigning those models to incompatible forced-tool calls.
Output budgets
The writer fits its word range to the smaller of the tier ceiling and the selected model’s output limit. Its token budget also includes formatting headroom and, when enabled, thinking tokens. The prompt is rebuilt if that fitting changes the requested word range. Claude Opus 5.5 and Sonnet 5.5 writer requests use adaptive thinking with medium effort. The writer reserves room for that thinking before budgeting prose; it does not disable a thinking mode the model requires. Thinking text is excluded from the saved draft. See Generation Tiers for policy ceilings and workflow timeouts. Those limits describe capacity, not a promise that every request will produce that many tokens or words.Authorized recovery
An unavailable provider can trigger a fallback only to a model and provider authorized for that stage and tier. The system does not improvise an arbitrary cheaper model. If no authorized route can complete the stage, the generation stops with a diagnostic and follows the failed-generation refund path. Some stages also have a failover-only route that is never their first choice. The planner fails over to OpenAIgpt-6.1-sol when its tier route and the remaining providers are unusable, for example when one provider rejects the model and another account is out of credits.
Invalid structured output is classified separately from provider access or outages. A planner schema error does not, by itself, mean a provider’s credentials are unhealthy.