diff --git a/java/com.sap.sailing.aiagent/src/com/sap/sailing/aiagent/impl/AIAgentImpl.java b/java/com.sap.sailing.aiagent/src/com/sap/sailing/aiagent/impl/AIAgentImpl.java
index 0820a4a8de2..884ad9719d5 100644
--- a/java/com.sap.sailing.aiagent/src/com/sap/sailing/aiagent/impl/AIAgentImpl.java
+++ b/java/com.sap.sailing.aiagent/src/com/sap/sailing/aiagent/impl/AIAgentImpl.java
@@ -46,7 +46,7 @@ import com.sap.sse.shared.util.WeakValueCache;
 public class AIAgentImpl implements AIAgent {
     private static final Logger logger = Logger.getLogger(AIAgentImpl.class.getName());
     
-    private static final String DEFAULT_MODEL_NAME = "gpt-5";
+    private static final String DEFAULT_MODEL_NAME = "o4-mini";
 
     private static final String SAP_AI_CORE_TAG = "SAP AI Core on %s";
     
diff --git a/java/com.sap.sailing.server/SailingServer (No Proxy).launch b/java/com.sap.sailing.server/SailingServer (No Proxy).launch
index 6db88a6bd62..1feb108547a 100755
--- a/java/com.sap.sailing.server/SailingServer (No Proxy).launch	
+++ b/java/com.sap.sailing.server/SailingServer (No Proxy).launch	
@@ -24,7 +24,7 @@
     <stringAttribute key="org.eclipse.jdt.launching.JRE_CONTAINER" value="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
     <stringAttribute key="org.eclipse.jdt.launching.PROGRAM_ARGUMENTS" value="-os ${target.os} -ws ${target.ws} -arch ${target.arch} -nl ${target.nl} -consoleLog -console 12001 -clean"/>
     <stringAttribute key="org.eclipse.jdt.launching.SOURCE_PATH_PROVIDER" value="org.eclipse.pde.ui.workbenchClasspathProvider"/>
-    <stringAttribute key="org.eclipse.jdt.launching.VM_ARGUMENTS" value="-ea -Declipse.ignoreApp=true -Dosgi.noShutdown=true -Dfile.encoding=cp1252 -Dexpedition.udp.port=5010 -Xmx6000m -XX:ThreadPriorityPolicy=2 -XX:+UseG1GC -Djetty.home=${project_loc:com.sap.sailing.server}/../target/configuration/jetty -Djava.util.logging.config.file=${project_loc:com.sap.sailing.server}/../target/configuration/logging_debug.properties -Dkiwo.results=${project_loc:com.sap.sailing.kiworesultimport.test}/resources -Dpersistentcompetitors.clear=false -Dpolardata.source.url=https://www.sapsailing.com -Dwindestimation.source.url=https://www.sapsailing.com -Drestore.tracked.races=true -Dorg.eclipse.jetty.server.Request.maxFormContentSize=50000000 -DAnniversaryRaceDeterminator.enabled=true -Djava.naming.factory.url.pkgs=org.eclipse.jetty.jndi -Djava.naming.factory.initial=org.eclipse.jetty.jndi.InitialContextFactory -Dorg.eclipse.jetty.annotations.maxWait=120 -Dchargebee.site=${CHARGEBEE_SITE} -Dchargebee.apikey=${CHARGEBEE_API_KEY} -Dmanage2sail.accesstoken=${MANAGE2SAIL_ACCESS_TOKEN} -Dsubscriptions.disableMailVerificationRequirement=true -Dgoogle.maps.authenticationparams=${GOOGLE_MAPS_AUTHENTICATION_PARAMS} -Dgwt.rpc.version=9  -Dwindestimation.source.bearertoken=${WIND_ESTIMATION_MODEL_BEARER_TOKEN} -Dpolardata.source.bearertoken=${POLAR_DATA_BEARER_TOKEN} -Dcom.sap.sse.debranding=false -Digtimi.riot.port=6000 -Digtimi.base.url=http://127.0.0.1:8888 -Dsap.aicore.credentials='${SAP_AICORE_CREDENTIALS}' -Dsap.sailing.aiagent.modelname=gpt-5 -Dgeonames.org.usernames=&quot;${GEONAMES_ORG_USERNAMES}&quot;"/>
+    <stringAttribute key="org.eclipse.jdt.launching.VM_ARGUMENTS" value="-ea -Declipse.ignoreApp=true -Dosgi.noShutdown=true -Dfile.encoding=cp1252 -Dexpedition.udp.port=5010 -Xmx6000m -XX:ThreadPriorityPolicy=2 -XX:+UseG1GC -Djetty.home=${project_loc:com.sap.sailing.server}/../target/configuration/jetty -Djava.util.logging.config.file=${project_loc:com.sap.sailing.server}/../target/configuration/logging_debug.properties -Dkiwo.results=${project_loc:com.sap.sailing.kiworesultimport.test}/resources -Dpersistentcompetitors.clear=false -Dpolardata.source.url=https://www.sapsailing.com -Dwindestimation.source.url=https://www.sapsailing.com -Drestore.tracked.races=true -Dorg.eclipse.jetty.server.Request.maxFormContentSize=50000000 -DAnniversaryRaceDeterminator.enabled=true -Djava.naming.factory.url.pkgs=org.eclipse.jetty.jndi -Djava.naming.factory.initial=org.eclipse.jetty.jndi.InitialContextFactory -Dorg.eclipse.jetty.annotations.maxWait=120 -Dchargebee.site=${CHARGEBEE_SITE} -Dchargebee.apikey=${CHARGEBEE_API_KEY} -Dmanage2sail.accesstoken=${MANAGE2SAIL_ACCESS_TOKEN} -Dsubscriptions.disableMailVerificationRequirement=true -Dgoogle.maps.authenticationparams=${GOOGLE_MAPS_AUTHENTICATION_PARAMS} -Dgwt.rpc.version=9  -Dwindestimation.source.bearertoken=${WIND_ESTIMATION_MODEL_BEARER_TOKEN} -Dpolardata.source.bearertoken=${POLAR_DATA_BEARER_TOKEN} -Dcom.sap.sse.debranding=false -Digtimi.riot.port=6000 -Digtimi.base.url=http://127.0.0.1:8888 -Dsap.aicore.credentials='${SAP_AICORE_CREDENTIALS}' -Dsap.sailing.aiagent.modelname=o4-mini -Dgeonames.org.usernames=&quot;${GEONAMES_ORG_USERNAMES}&quot;"/>
     <stringAttribute key="org.eclipse.jdt.launching.WORKING_DIRECTORY" value="${workspace_loc}"/>
     <stringAttribute key="pde.version" value="3.3"/>
     <stringAttribute key="profilingTraceType-ALLOCATION_TRACE" value="KEY_APPLICATION_FILTER%CTX_KEY%*%CTX_ENTRY%INCREASE_COUNT%CTX_KEY%8192%CTX_ENTRY%KEY_MIN_SIZE%CTX_KEY%32%CTX_ENTRY%KEY_MAX_SIZE%CTX_KEY%65536%CTX_ENTRY%KEY_INC_LINE_NRS%CTX_KEY%true%CTX_ENTRY%KEY_SESSION_FILTER%CTX_KEY%*%CTX_ENTRY%KEY_ENABLEMENT%CTX_KEY%false%CTX_ENTRY%CLASS_FILTER%CTX_KEY%*%CTX_ENTRY%KEY_USER_FILTER%CTX_KEY%*%CTX_ENTRY%KEY_REQUEST_FILTER%CTX_KEY%*%CTX_ENTRY%KEY_TENANT_FILTER%CTX_KEY%*%CTX_ENTRY%KEY_ADAPTIVE%CTX_KEY%false%CTX_ENTRY%"/>