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model routing: Sonnet 5.5 by default for every agent, the orchestrator included; Opus only on evidence (Closes #10921) - #10929
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…r included; Opus only on evidence (Closes #10921) Owner directive 2026-10-19 (translated): "set Sonnet as the default model for all agents -- it is cheaper with the same result". model_route.t27: base_tier() is Sonnet for every role; route() raises any role to Opus only after ESCALATE_AFTER failed attempts or on the owner's flag; is_waste() flags Opus without that evidence for every role. The header keeps the 2026-10-18 directive it replaces. t27b 6/6, test-report 0 vacuous, a mutant restoring Opus for orchestration fails 3 of 6; seal re-saved. trinity.md -> model: sonnet; CLAUDE.md and the model-routing skill point to the new rule. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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October 19, 2026 07:08
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Closes #10921.
Owner directive 2026-10-19 (translated): "set Sonnet as the default model for all agents -- it is cheaper with the same result". It replaces the 2026-10-18 rule (#10493: orchestration on Opus 5.5, sub-tasks on Sonnet 5.5).
The law --
specs/claw/model_route.t27base_tier()returns Sonnet for every role, orchestration included.route()raises any role to Opus only afterESCALATE_AFTER(2) failed attempts on the same task, or on the owner's flag.is_waste()flags Opus without that evidence for every role (it exempted orchestration before).Evidence:
t27b test6/6 and the invariant holds;t27c test-report0 vacuous of 6; negative control -- a copy that restores Opus for orchestration fails 3 of 6 tests; seal re-saved,--verifyMATCH.Pointers
.claude/agents/trinity.md(the Queen/orchestrator):model: opus->model: sonnet; every agent in.claude/agents/now says sonnet..claude/settings.jsonalready setsCLAUDE_CODE_SUBAGENT_MODEL=claude-sonnet-5-5.CLAUDE.md"Model routing" and.claude/skills/model-routing/SKILL.md: the new rule; the main session picks Sonnet 5.5 in the app's model menu.tools/check_documented_commands_exist.py: ok.🤖 Generated with Claude Code