diff --git a/crates/op-host-services/src/chat_agent_context.rs b/crates/op-host-services/src/chat_agent_context.rs
index 3be9466ee..5ad07af52 100644
--- a/crates/op-host-services/src/chat_agent_context.rs
+++ b/crates/op-host-services/src/chat_agent_context.rs
@@ -292,7 +292,7 @@ mod tests {
     fn screenshot_budget_uses_model_tier_and_never_returns_invalid_truncation() {
         assert!(
             inline_screenshot_char_budget("claude-opus-4.8", 6_144)
-                > inline_screenshot_char_budget("minimax-m3", 6_144)
+                > inline_screenshot_char_budget("minimax-m2.7", 6_144)
         );
         let tiny = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg==";
         assert_eq!(
diff --git a/crates/op-orchestrator/src/model_profile.rs b/crates/op-orchestrator/src/model_profile.rs
index af95edc6c..987e9ae08 100644
--- a/crates/op-orchestrator/src/model_profile.rs
+++ b/crates/op-orchestrator/src/model_profile.rs
@@ -148,6 +148,12 @@ const MODEL_PROFILES: &[Entry] = &[
     // Standard。与 GLM 同理是推理模型,关思考防烧 content;时长无实测数据,先 ×1,
     // 慢再调。未来 K4 等更高代际届时各加一条 matcher。
     e(Match::Sub("kimi-k3"), ModelTier::Full, true, "Kimi K3"),
+    // MiniMax M3（及以后）—— 2026-07-18 3×2 A/B 实测（mobile 多屏/dashboard/
+    // landing）：Full 档几何 issue 5→1、总耗时快 30%、调用数更少、完整性更优，
+    // 全维度非边际胜出 → 升 Full。仅 M3 起算强（老 M 系/abab 落后面的泛 minimax
+    // Basic 条目）。thinking 由 ChatProviderLlmClient 的 m3_keeps_thinking 特判
+    // 保留（Adaptive），此处 thinking_disabled 对 M3 实际不生效，仅作族内一致。
+    e(Match::Sub("minimax-m3"), ModelTier::Full, true, "MiniMax M3"),
     e(
         Match::Sub("deepseek-v4-flash"),
         ModelTier::Standard,
@@ -253,6 +259,12 @@ mod tests {
             resolve_model_profile("kimi-k2.5").tier,
             ModelTier::Standard
         );
+        // M3 measured full-tier (2026-07-18 A/B); older MiniMax stays Basic.
+        assert_eq!(resolve_model_profile("MiniMax-M3").tier, ModelTier::Full);
+        assert_eq!(
+            resolve_model_profile("MiniMax-M2.7").tier,
+            ModelTier::Basic
+        );
         assert_eq!(
             resolve_model_profile("claude-opus-4-1").tier,
             ModelTier::Full
diff --git a/crates/op-orchestrator/src/prompt_tests.rs b/crates/op-orchestrator/src/prompt_tests.rs
index fd7dbfe06..d6fa9b3ac 100644
--- a/crates/op-orchestrator/src/prompt_tests.rs
+++ b/crates/op-orchestrator/src/prompt_tests.rs
@@ -1473,14 +1473,14 @@ fn components_manifest_instruction_matches_active_protocol() {
 /// `ALLOWED` allow-set (DropReason::TierFiltered) even with budget room
 /// (`budget_used < budget_max`) — so a weak model saw the component list with
 /// no instruction on how to emit a `ref` node and built everything from
-/// scratch (0 component instances). Reproduces the real smoke path: a MiniMax
-/// (Basic-tier) mobile screen, whose 9200-token budget has room to spare.
+/// scratch (0 component instances). Reproduces the real smoke path: a Basic-tier
+/// MiniMax (M2.x; M3 is Full since 2026-07-18) mobile screen, whose 9200-token budget has room to spare.
 #[test]
 fn basic_tier_components_prompt_keeps_both_manifest_and_teaching() {
     // Sanity: the model classifies as Basic, the path that drops non-allowed
     // skills via the allow-set (the bug surface).
     assert_eq!(
-        resolve_model_profile("minimax-m3").tier,
+        resolve_model_profile("minimax-m2.7").tier,
         ModelTier::Basic,
         "test fixture must exercise the Basic tier"
     );
@@ -1492,7 +1492,7 @@ fn basic_tier_components_prompt_keeps_both_manifest_and_teaching() {
         prompt: "Design a 402x874 mobile shop home screen with product cards, \
                  search, and bottom navigation using the available components"
             .into(),
-        model: Some("minimax-m3".into()),
+        model: Some("minimax-m2.7".into()),
         ..req()
     };
     let mut mobile_plan = plan();
@@ -1597,7 +1597,7 @@ fn tight_budget_dashboard_keeps_component_composition() {
     // Basic tier is the path that overrides the budget down to 5200 when the
     // plan is NOT a mobile full screen (the bug surface).
     assert_eq!(
-        resolve_model_profile("minimax-m3").tier,
+        resolve_model_profile("minimax-m2.7").tier,
         ModelTier::Basic,
         "fixture must exercise the Basic tier (5200 budget on non-mobile)"
     );
@@ -1608,7 +1608,7 @@ fn tight_budget_dashboard_keeps_component_composition() {
         prompt: "Design a 1280x800 analytics dashboard with metric cards, \
                  a chart panel, and a data table using the available components"
             .into(),
-        model: Some("minimax-m3".into()),
+        model: Some("minimax-m2.7".into()),
         ..req()
     };
     let mut dash_plan = plan();
@@ -1709,7 +1709,7 @@ fn tight_budget_dashboard_without_library_does_not_pin_component_composition() {
         prompt: "Design a 1280x800 analytics dashboard with metric cards, \
                  a chart panel, and a data table"
             .into(),
-        model: Some("minimax-m3".into()),
+        model: Some("minimax-m2.7".into()),
         ..req()
     };
     let mut dash_plan = plan();