model-economics

Model Economics — tier map & cost rules

SSOT for which model tier each role runs on, and the cost rules that govern tier and effort choices. The dispatch routing decision — which agent handles which work shape — lives in ${POLICY_BUNDLE_ROOT}/rules/execution-policy.md §Implementation dispatch; this file owns the cost lens over that routing and does not restate its work-shape rows. Native-vs-external candidate selection follows the shared Native dispatch baseline in execution-policy.md; model economics ranks an already-valid candidate and never enables cross-provider probing. Resource-layer markdown, opt-in — referenced from execution-policy.md §Agent dispatch (model-tier + configured-role paragraphs).

Reviewers keep a sonnet floor — no downward tiering. reviewer_target is the only public reviewer entry. Runtime-tunable via userConfig: the four <role>_target keys (worker_target, reasoner_target, planner_target, reviewer_target, format <agent>/<model>[:<effort>]) carry model and effort for every Role, including the CLI-backed codex-worker, codex-reasoner, codex-reviewer, and agy-worker (their model and effort come from the matching <role>_target when its target Agent is that CLI; agy bakes effort into the model name). The former *_model / *_effort keys (fast_worker_*, deep_reasoner_*, codex_fast_worker_*, codex_deep_reasoner_*, agy_fast_worker_model, and the rest) are removed keys, reported BLOCKED and not applied; see the configuration guide's "Removed in 0.69.0" section. Only timeouts stay role-specific: codex_worker_timeout_secs, codex_reasoner_timeout_secs, codex_reviewer_timeout_secs, with the shared codex_timeout_secs; budgets are integer seconds, 0 is an intentional dispatcher-attested no-deadline request, and malformed values fail closed. The portable runner, never a shell timeout backstop, enforces an attested nonzero deadline. The rest of the map is documentation for humans, not a runtime dial.