diff --git a/include/fastgltf/parser.hpp b/include/fastgltf/parser.hpp
index e331858a1..ddbb23bd6 100644
--- a/include/fastgltf/parser.hpp
+++ b/include/fastgltf/parser.hpp
@@ -597,7 +597,9 @@ namespace fastgltf {
          * Returns the size, in bytes,
          * @return
          */
-        [[nodiscard]] inline std::size_t getBufferSize() const noexcept;
+        [[nodiscard]] inline std::size_t getBufferSize() const noexcept {
+			return dataSize;
+		}
 
         [[nodiscard]] explicit operator span<std::byte>() {
             return span<std::byte>(bufferPointer, dataSize);
diff --git a/src/fastgltf.cpp b/src/fastgltf.cpp
index 6224beefe..31c6d1cc9 100644
--- a/src/fastgltf.cpp
+++ b/src/fastgltf.cpp
@@ -3212,10 +3212,6 @@ bool fg::GltfDataBuffer::loadFromFile(const fs::path& path, std::uint64_t byteOf
     std::memset(bufferPointer + dataSize, 0, allocatedSize - dataSize);
     return true;
 }
-
-std::size_t fg::GltfDataBuffer::getBufferSize() const noexcept {
-    return dataSize;
-}
 #pragma endregion
 
 #pragma region AndroidGltfDataBuffer
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 5131a4eb8..a7d541afa 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -48,4 +48,16 @@ if (FASTGLTF_ENABLE_GLTF_RS AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/gltf-rs/src/
     target_compile_definitions(fastgltf_tests PRIVATE HAS_GLTFRS=1)
 endif()
 
+if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/gltf_loaders/assimp")
+    message(STATUS "fastgltf: Found assimp")
+    # Only enable glTF importer
+    set(ASSIMP_NO_EXPORT ON CACHE BOOL "")
+    set(ASSIMP_BUILD_TESTS OFF CACHE BOOL "")
+    set(ASSIMP_BUILD_ALL_IMPORTERS_BY_DEFAULT OFF CACHE BOOL "")
+    set(ASSIMP_BUILD_GLTF_IMPORTER ON CACHE BOOL "")
+    add_subdirectory(gltf_loaders/assimp)
+    target_link_libraries(fastgltf_tests PRIVATE assimp::assimp)
+    target_compile_definitions(fastgltf_tests PRIVATE HAS_ASSIMP=1)
+endif()
+
 add_source_directory(TARGET fastgltf_tests FOLDER ".")
diff --git a/tests/benchmarks.cpp b/tests/benchmarks.cpp
index 90b47d4cb..7fbfd0653 100644
--- a/tests/benchmarks.cpp
+++ b/tests/benchmarks.cpp
@@ -70,6 +70,12 @@ void setTinyGLTFCallbacks(tinygltf::TinyGLTF& gltf) {
 #include "gltf-rs-bridge/lib.h"
 #endif
 
+#ifdef HAS_ASSIMP
+#include <assimp/cimport.h>
+#include <assimp/scene.h>
+#include <assimp/Base64.hpp>
+#endif
+
 std::vector<uint8_t> readFileAsBytes(std::filesystem::path path) {
     std::ifstream file(path, std::ios::ate | std::ios::binary);
     if (!file.is_open())
@@ -129,6 +135,12 @@ TEST_CASE("Benchmark loading of NewSponza", "[gltf-benchmark]") {
 		return rust::gltf::run(slice);
 	};
 #endif
+
+#ifdef HAS_ASSIMP
+	BENCHMARK("Parse NewSponza with assimp") {
+		return aiImportFileFromMemory(reinterpret_cast<const char*>(bytes.data()), jsonData->getBufferSize(), 0, nullptr);
+	};
+#endif
 }
 
 TEST_CASE("Benchmark base64 decoding from glTF file", "[gltf-benchmark]") {
@@ -175,6 +187,14 @@ TEST_CASE("Benchmark base64 decoding from glTF file", "[gltf-benchmark]") {
 		return rust::gltf::run(slice);
 	};
 #endif
+
+#ifdef HAS_ASSIMP
+	BENCHMARK("2CylinderEngine with assimp") {
+		const auto* scene = aiImportFileFromMemory(reinterpret_cast<const char*>(bytes.data()), jsonData->getBufferSize(), 0, nullptr);
+		REQUIRE(scene != nullptr);
+		return scene;
+	};
+#endif
 }
 
 TEST_CASE("Benchmark raw JSON parsing", "[gltf-benchmark]") {
@@ -220,6 +240,12 @@ TEST_CASE("Benchmark raw JSON parsing", "[gltf-benchmark]") {
 		return rust::gltf::run(slice);
 	};
 #endif
+
+#ifdef HAS_ASSIMP
+	BENCHMARK("Parse Buggy.gltf with assimp") {
+		return aiImportFileFromMemory(reinterpret_cast<const char*>(bytes.data()), jsonData->getBufferSize(), 0, nullptr);
+	};
+#endif
 }
 
 TEST_CASE("Benchmark massive gltf file", "[gltf-benchmark]") {
@@ -269,6 +295,12 @@ TEST_CASE("Benchmark massive gltf file", "[gltf-benchmark]") {
 		return rust::gltf::run(slice);
 	};
 #endif
+
+#ifdef HAS_ASSIMP
+	BENCHMARK("Parse Bistro with assimp") {
+		return aiImportFileFromMemory(reinterpret_cast<const char*>(bytes.data()), jsonData->getBufferSize(), 0, nullptr);
+	};
+#endif
 }
 
 TEST_CASE("Compare parsing performance with minified documents", "[gltf-benchmark]") {
@@ -357,6 +389,12 @@ TEST_CASE("Compare base64 decoding performance", "[gltf-benchmark]") {
 	};
 #endif
 
+#ifdef HAS_ASSIMP
+	BENCHMARK("Run Assimp's base64 decoder") {
+		return Assimp::Base64::Decode(generatedData);
+	};
+#endif
+
 	BENCHMARK("Run fastgltf's fallback base64 decoder") {
 		return fastgltf::base64::fallback_decode(generatedData);
 	};