diff --git a/.opencode/agent/coder.md b/.opencode/agent/coder.md
index e83a8ac..7905083 100644
--- a/.opencode/agent/coder.md
+++ b/.opencode/agent/coder.md
@@ -1,7 +1,7 @@
 ---
 description: Implements bounded, well-specified coding slices for nocal. Owns an explicit file set, writes C++20 with deterministic tests, compiles with strict warnings, runs the relevant test binaries, and reports exact checks. Use for delegated implementation only — not for architecture decisions, cross-cutting changes, or review.
 mode: subagent
-model: openrouter/qwen/qwen3-coder-next
+model: openrouter/deepseek/deepseek-v4-flash
 permission:
   edit: allow
   bash: allow
diff --git a/AGENTS.md b/AGENTS.md
index 28424f2..7cd928e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -40,7 +40,7 @@ implementation value.
 ## Concrete delegation setup (nocal)
 
 A coding subagent is configured at `.opencode/agent/coder.md` with model
-`openrouter/qwen/qwen3-coder-next`. It owns bounded implementation slices assigned
+`openrouter/deepseek/deepseek-v4-flash`. It owns bounded implementation slices assigned
 by the lead; the lead retains shared contracts, integration, review, and final
 verification. After any config change, restart opencode to reload agents.