diff --git a/codex-rs/app-server/tests/common/models_cache.rs b/codex-rs/app-server/tests/common/models_cache.rs
index acc04e58d..b889f004b 100644
--- a/codex-rs/app-server/tests/common/models_cache.rs
+++ b/codex-rs/app-server/tests/common/models_cache.rs
@@ -1,7 +1,6 @@
 use chrono::DateTime;
 use chrono::Utc;
 use codex_core::models_manager::model_presets::all_model_presets;
-use codex_protocol::openai_models::ClientVersion;
 use codex_protocol::openai_models::ConfigShellToolType;
 use codex_protocol::openai_models::ModelInfo;
 use codex_protocol::openai_models::ModelPreset;
@@ -25,7 +24,6 @@ fn preset_to_info(preset: &ModelPreset, priority: i32) -> ModelInfo {
         } else {
             ModelVisibility::Hide
         },
-        minimal_client_version: ClientVersion(0, 1, 0),
         supported_in_api: true,
         priority,
         upgrade: preset.upgrade.as_ref().map(|u| u.id.clone()),
diff --git a/codex-rs/codex-api/tests/models_integration.rs b/codex-rs/codex-api/tests/models_integration.rs
index 93baffd35..115c5a829 100644
--- a/codex-rs/codex-api/tests/models_integration.rs
+++ b/codex-rs/codex-api/tests/models_integration.rs
@@ -4,7 +4,6 @@ use codex_api::provider::Provider;
 use codex_api::provider::RetryConfig;
 use codex_api::provider::WireApi;
 use codex_client::ReqwestTransport;
-use codex_protocol::openai_models::ClientVersion;
 use codex_protocol::openai_models::ConfigShellToolType;
 use codex_protocol::openai_models::ModelInfo;
 use codex_protocol::openai_models::ModelVisibility;
@@ -75,7 +74,6 @@ async fn models_client_hits_models_endpoint() {
             ],
             shell_type: ConfigShellToolType::ShellCommand,
             visibility: ModelVisibility::List,
-            minimal_client_version: ClientVersion(0, 1, 0),
             supported_in_api: true,
             priority: 1,
             upgrade: None,
diff --git a/codex-rs/core/src/models_manager/model_family.rs b/codex-rs/core/src/models_manager/model_family.rs
index 21e20bcc0..9e2fb9246 100644
--- a/codex-rs/core/src/models_manager/model_family.rs
+++ b/codex-rs/core/src/models_manager/model_family.rs
@@ -117,7 +117,6 @@ impl ModelFamily {
             supported_reasoning_levels: _,
             shell_type,
             visibility: _,
-            minimal_client_version: _,
             supported_in_api: _,
             priority: _,
             upgrade: _,
@@ -434,7 +433,6 @@ fn derive_default_model_family(model: &str) -> ModelFamily {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use codex_protocol::openai_models::ClientVersion;
     use codex_protocol::openai_models::ModelVisibility;
     use codex_protocol::openai_models::ReasoningEffortPreset;
     use codex_protocol::openai_models::TruncationPolicyConfig;
@@ -451,7 +449,6 @@ mod tests {
             }],
             shell_type: shell,
             visibility: ModelVisibility::List,
-            minimal_client_version: ClientVersion(0, 1, 0),
             supported_in_api: true,
             priority: 1,
             upgrade: None,
@@ -541,7 +538,6 @@ mod tests {
             }],
             shell_type: ConfigShellToolType::ShellCommand,
             visibility: ModelVisibility::List,
-            minimal_client_version: ClientVersion(0, 1, 0),
             supported_in_api: true,
             priority: 10,
             upgrade: None,
diff --git a/codex-rs/core/tests/suite/remote_models.rs b/codex-rs/core/tests/suite/remote_models.rs
index f4102df0d..15a786609 100644
--- a/codex-rs/core/tests/suite/remote_models.rs
+++ b/codex-rs/core/tests/suite/remote_models.rs
@@ -17,7 +17,6 @@ use codex_core::protocol::ExecCommandSource;
 use codex_core::protocol::Op;
 use codex_core::protocol::SandboxPolicy;
 use codex_protocol::config_types::ReasoningSummary;
-use codex_protocol::openai_models::ClientVersion;
 use codex_protocol::openai_models::ConfigShellToolType;
 use codex_protocol::openai_models::ModelInfo;
 use codex_protocol::openai_models::ModelPreset;
@@ -73,7 +72,6 @@ async fn remote_models_remote_model_uses_unified_exec() -> Result<()> {
         }],
         shell_type: ConfigShellToolType::UnifiedExec,
         visibility: ModelVisibility::List,
-        minimal_client_version: ClientVersion(0, 1, 0),
         supported_in_api: true,
         priority: 1,
         upgrade: None,
@@ -213,7 +211,6 @@ async fn remote_models_apply_remote_base_instructions() -> Result<()> {
         }],
         shell_type: ConfigShellToolType::ShellCommand,
         visibility: ModelVisibility::List,
-        minimal_client_version: ClientVersion(0, 1, 0),
         supported_in_api: true,
         priority: 1,
         upgrade: None,
@@ -478,7 +475,6 @@ fn test_remote_model(slug: &str, visibility: ModelVisibility, priority: i32) ->
         }],
         shell_type: ConfigShellToolType::ShellCommand,
         visibility,
-        minimal_client_version: ClientVersion(0, 1, 0),
         supported_in_api: true,
         priority,
         upgrade: None,
diff --git a/codex-rs/protocol/src/openai_models.rs b/codex-rs/protocol/src/openai_models.rs
index 28b25bb60..fc7f0b8ce 100644
--- a/codex-rs/protocol/src/openai_models.rs
+++ b/codex-rs/protocol/src/openai_models.rs
@@ -177,7 +177,6 @@ pub struct ModelInfo {
     pub supported_reasoning_levels: Vec<ReasoningEffortPreset>,
     pub shell_type: ConfigShellToolType,
     pub visibility: ModelVisibility,
-    pub minimal_client_version: ClientVersion,
     pub supported_in_api: bool,
     pub priority: i32,
     pub upgrade: Option<String>,