diff --git a/codex-rs/core/src/agent/role.rs b/codex-rs/core/src/agent/role.rs
index 1dcf8b679..f498b232b 100644
--- a/codex-rs/core/src/agent/role.rs
+++ b/codex-rs/core/src/agent/role.rs
@@ -8,7 +8,7 @@ use serde::Serialize;
 const ORCHESTRATOR_PROMPT: &str = include_str!("../../templates/agents/orchestrator.md");
 /// Default model override used.
 // TODO(jif) update when we have something smarter.
-const EXPLORER_MODEL: &str = "gpt-5.1-codex-mini";
+const EXPLORER_MODEL: &str = "gpt-5.3-codex-spark";
 
 /// Enumerated list of all supported agent roles.
 const ALL_ROLES: [AgentRole; 3] = [
diff --git a/codex-rs/core/src/codex.rs b/codex-rs/core/src/codex.rs
index 87ae68f2d..d21ad0d0a 100644
--- a/codex-rs/core/src/codex.rs
+++ b/codex-rs/core/src/codex.rs
@@ -4360,7 +4360,7 @@ pub(crate) async fn run_turn(
                 let estimated_token_count =
                     sess.get_estimated_token_count(turn_context.as_ref()).await;
 
-                info!(
+                trace!(
                     turn_id = %turn_context.sub_id,
                     total_usage_tokens,
                     estimated_token_count = ?estimated_token_count,