diff --git a/ci/build.linux.gitlab-ci.yml b/ci/build.linux.gitlab-ci.yml
index 4f5413ccb..0b8d5b314 100644
--- a/ci/build.linux.gitlab-ci.yml
+++ b/ci/build.linux.gitlab-ci.yml
@@ -36,6 +36,16 @@ build:linux:cross:x86-64:gcc-10:default:
     EIGEN_CI_CROSS_C_COMPILER: x86_64-linux-gnu-gcc-10
     EIGEN_CI_CROSS_CXX_COMPILER: x86_64-linux-gnu-g++-10
 
+# GCC-13 (strict support for _Float16)
+build:linux:cross:x86-64:gcc-13:default:
+  extends: .build:linux:cross:x86-64
+  variables:
+    EIGEN_CI_C_COMPILER: gcc-13
+    EIGEN_CI_CXX_COMPILER: g++-13
+    EIGEN_CI_CROSS_INSTALL: g++-13-x86-64-linux-gnu
+    EIGEN_CI_CROSS_C_COMPILER: x86_64-linux-gnu-gcc-13
+    EIGEN_CI_CROSS_CXX_COMPILER: x86_64-linux-gnu-g++-13
+
 build:linux:cross:x86-64:gcc-10:avx:
   extends: build:linux:cross:x86-64:gcc-10:default
   variables:
@@ -51,6 +61,11 @@ build:linux:cross:x86-64:gcc-10:avx512dq:
   variables:
     EIGEN_CI_ADDITIONAL_ARGS: "-DEIGEN_TEST_AVX512DQ=on"
 
+build:linux:cross:x86-64:gcc-13:avx512fp16:
+  extends: build:linux:cross:x86-64:gcc-13:default
+  variables:
+    EIGEN_CI_ADDITIONAL_ARGS: "-DEIGEN_TEST_AVX512FP16=on -DEIGEN_TEST_AVX512DQ=on -DEIGEN_TEST_F16C=on"
+
 # Clang-14 (stable recent version)
 build:linux:cross:x86-64:clang-14:default:
   extends: .build:linux:cross:x86-64
diff --git a/ci/test.linux.gitlab-ci.yml b/ci/test.linux.gitlab-ci.yml
index 06e08fded..84754ecf9 100644
--- a/ci/test.linux.gitlab-ci.yml
+++ b/ci/test.linux.gitlab-ci.yml
@@ -91,6 +91,32 @@ test:linux:x86-64:gcc-10:avx512dq:unsupported:
   variables:
     EIGEN_CI_CTEST_LABEL: Unsupported
 
+# GCC-13 (strict support for _Float16)
+.test:linux:x86-64:gcc-13:default:
+  extends: .test:linux:x86-64
+  needs: [ build:linux:cross:x86-64:gcc-13:default ]
+  variables:
+    EIGEN_CI_INSTALL: g++-13
+
+.test:linux:x86-64:gcc-13:avx512fp16:
+  extends: .test:linux:x86-64:gcc-13:default
+  needs: [ build:linux:cross:x86-64:gcc-13:avx512fp16 ]
+  tags:
+    - eigen-runner
+    - linux
+    - x86-64
+    - avx512
+
+test:linux:x86-64:gcc-13:avx512fp16:official:
+  extends: .test:linux:x86-64:gcc-13:avx512fp16
+  variables:
+    EIGEN_CI_TEST_LABEL: Official
+
+test:linux:x86-64:gcc-13:avx512fp16:unsupported:
+  extends: .test:linux:x86-64:gcc-13:avx512fp16
+  variables:
+    EIGEN_CI_TEST_LABEL: Unsupported
+
 # Clang-14 (modern stable)
 .test:linux:x86-64:clang-14:default:
   extends: .test:linux:x86-64