diff --git a/Makefile b/Makefile
index fe1350d5f5..472661d6e4 100644
--- a/Makefile
+++ b/Makefile
@@ -142,7 +142,7 @@ export UNSTRUCTURED_INCLUDE_DEBUG_METADATA ?= false
 .PHONY: test
 test:
 	PYTHONPATH=. CI=$(CI) \
-	UNSTRUCTURED_INCLUDE_DEBUG_METADATA=$(UNSTRUCTURED_INCLUDE_DEBUG_METADATA) ${PYTHON} -m pytest test_${PACKAGE_NAME} --cov=${PACKAGE_NAME} --cov-report term-missing --durations=40
+	UNSTRUCTURED_INCLUDE_DEBUG_METADATA=$(UNSTRUCTURED_INCLUDE_DEBUG_METADATA) ${PYTHON} -m pytest -n auto test_${PACKAGE_NAME} --cov=${PACKAGE_NAME} --cov-report term-missing --durations=40
 
 .PHONY: test-unstructured-api-unit
 test-unstructured-api-unit:
@@ -151,7 +151,7 @@ test-unstructured-api-unit:
 .PHONY: test-no-extras
 test-no-extras:
 	PYTHONPATH=. CI=$(CI) \
-		UNSTRUCTURED_INCLUDE_DEBUG_METADATA=$(UNSTRUCTURED_INCLUDE_DEBUG_METADATA) ${PYTHON} -m pytest \
+		UNSTRUCTURED_INCLUDE_DEBUG_METADATA=$(UNSTRUCTURED_INCLUDE_DEBUG_METADATA) ${PYTHON} -m pytest -n auto \
 		test_${PACKAGE_NAME}/partition/test_text.py \
 		test_${PACKAGE_NAME}/partition/test_email.py \
 		test_${PACKAGE_NAME}/partition/html/test_partition.py \
@@ -159,52 +159,52 @@ test-no-extras:
 
 .PHONY: test-extra-csv
 test-extra-csv:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest \
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto \
 		test_unstructured/partition/test_csv.py \
 		test_unstructured/partition/test_tsv.py
 
 .PHONY: test-extra-docx
 test-extra-docx:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest \
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n audo \
 		test_unstructured/partition/test_doc.py \
 		test_unstructured/partition/test_docx.py
 
 .PHONY: test-extra-epub
 test-extra-epub:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest test_unstructured/partition/test_epub.py
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n autotest_unstructured/partition/test_epub.py
 
 .PHONY: test-extra-markdown
 test-extra-markdown:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest test_unstructured/partition/test_md.py
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto test_unstructured/partition/test_md.py
 
 .PHONY: test-extra-odt
 test-extra-odt:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest test_unstructured/partition/test_odt.py
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto test_unstructured/partition/test_odt.py
 
 .PHONY: test-extra-pdf-image
 test-extra-pdf-image:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest test_unstructured/partition/pdf_image
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto test_unstructured/partition/pdf_image
 
 .PHONY: test-extra-pptx
 test-extra-pptx:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest \
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto \
 		test_unstructured/partition/test_ppt.py \
 		test_unstructured/partition/test_pptx.py
 
 .PHONY: test-extra-pypandoc
 test-extra-pypandoc:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest \
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto \
 		test_unstructured/partition/test_org.py \
 		test_unstructured/partition/test_rst.py \
 		test_unstructured/partition/test_rtf.py
 
 .PHONY: test-extra-xlsx
 test-extra-xlsx:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest test_unstructured/partition/test_xlsx.py
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto test_unstructured/partition/test_xlsx.py
 
 .PHONY: test-text-extraction-evaluate
 test-text-extraction-evaluate:
-	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest test_unstructured/metrics/test_text_extraction.py
+	PYTHONPATH=. CI=$(CI) ${PYTHON} -m pytest -n auto test_unstructured/metrics/test_text_extraction.py
 
 ## check:                   runs linters (includes tests)
 .PHONY: check
diff --git a/requirements/test.in b/requirements/test.in
index e9b8fadbf8..3bf9c5edf3 100644
--- a/requirements/test.in
+++ b/requirements/test.in
@@ -10,6 +10,7 @@ mypy
 pydantic
 pytest-cov
 pytest-mock
+pytest-xdist
 ruff
 types-Markdown
 types-requests
diff --git a/requirements/test.txt b/requirements/test.txt
index 7aba185049..03eb310eb6 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -2,56 +2,202 @@
 # This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile ./test.in
+#    pip-compile --output-file=requirements/test.txt requirements/base.txt requirements/test.in
 #
 annotated-types==0.7.0
     # via pydantic
+anyio==4.9.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   httpx
 autoflake==2.3.1
-    # via -r ./test.in
+    # via -r requirements/test.in
+backoff==2.2.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+beautifulsoup4==4.13.4
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
 black==25.1.0
-    # via -r ./test.in
+    # via -r requirements/test.in
+certifi==2025.4.26
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   httpcore
+    #   httpx
+    #   requests
+    #   unstructured-client
+cffi==1.17.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   cryptography
+chardet==5.2.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+charset-normalizer==3.4.2
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   requests
+    #   unstructured-client
 click==8.2.1
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
     #   black
+    #   nltk
+    #   python-oxmsg
 coverage[toml]==7.8.2
     # via
-    #   -r ./test.in
+    #   -r requirements/test.in
     #   pytest-cov
+cryptography==45.0.4
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
+dataclasses-json==0.6.7
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
+deepdiff==8.5.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
+emoji==2.14.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
 exceptiongroup==1.3.0
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   anyio
     #   pytest
+execnet==2.1.1
+    # via pytest-xdist
+filetype==1.2.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
 flake8==7.2.0
     # via
-    #   -r ./test.in
+    #   -r requirements/test.in
     #   flake8-print
 flake8-print==5.0.0
-    # via -r ./test.in
+    # via -r requirements/test.in
 freezegun==1.5.2
-    # via -r ./test.in
+    # via -r requirements/test.in
 grpcio==1.73.0
     # via
-    #   -c ./deps/constraints.txt
-    #   -r ./test.in
+    #   -c requirements/./deps/constraints.txt
+    #   -r requirements/test.in
+h11==0.16.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   httpcore
+html5lib==1.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+httpcore==1.0.9
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   httpx
+httpx==0.28.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
+idna==3.10
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   anyio
+    #   httpx
+    #   requests
+    #   unstructured-client
 iniconfig==2.1.0
     # via pytest
+joblib==1.5.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   nltk
+jsonpath-python==1.0.6
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
+langdetect==1.0.9
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
 liccheck==0.9.2
-    # via -r ./test.in
+    # via -r requirements/test.in
+lxml==5.4.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+marshmallow==3.26.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   dataclasses-json
+    #   unstructured-client
 mccabe==0.7.0
     # via flake8
 mypy==1.16.0
-    # via -r ./test.in
+    # via -r requirements/test.in
 mypy-extensions==1.1.0
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
     #   black
     #   mypy
+    #   typing-inspect
+    #   unstructured-client
+nest-asyncio==1.6.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
+nltk==3.9.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+numpy==2.2.6
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+olefile==0.47
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   python-oxmsg
+orderly-set==5.4.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   deepdiff
 packaging==25.0
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
     #   black
+    #   marshmallow
     #   pytest
+    #   unstructured-client
 pathspec==0.12.1
     # via
     #   black
@@ -60,12 +206,21 @@ platformdirs==4.3.8
     # via black
 pluggy==1.6.0
     # via pytest
+psutil==7.0.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
 pycodestyle==2.13.0
     # via
     #   flake8
     #   flake8-print
+pycparser==2.22
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   cffi
 pydantic==2.11.5
-    # via -r ./test.in
+    # via -r requirements/test.in
 pydantic-core==2.33.2
     # via pydantic
 pyflakes==3.3.2
@@ -74,26 +229,82 @@ pyflakes==3.3.2
     #   flake8
 pygments==2.19.1
     # via pytest
+pypdf==5.6.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
 pytest==8.4.0
     # via
     #   pytest-cov
     #   pytest-mock
+    #   pytest-xdist
 pytest-cov==6.1.1
-    # via -r ./test.in
+    # via -r requirements/test.in
 pytest-mock==3.14.1
-    # via -r ./test.in
+    # via -r requirements/test.in
+pytest-xdist==3.7.0
+    # via -r requirements/test.in
 python-dateutil==2.9.0.post0
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
     #   freezegun
+    #   unstructured-client
+python-iso639==2025.2.18
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+python-magic==0.4.27
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+python-oxmsg==0.0.2
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+rapidfuzz==3.13.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+regex==2024.11.6
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   nltk
+requests==2.32.4
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   requests-toolbelt
+    #   unstructured-client
+requests-toolbelt==1.0.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   unstructured-client
 ruff==0.11.13
-    # via -r ./test.in
+    # via -r requirements/test.in
 semantic-version==2.10.0
     # via liccheck
 six==1.17.0
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   html5lib
+    #   langdetect
     #   python-dateutil
+    #   unstructured-client
+sniffio==1.3.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   anyio
+soupsieve==2.7
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   beautifulsoup4
 toml==0.10.2
     # via liccheck
 tomli==2.2.1
@@ -103,27 +314,62 @@ tomli==2.2.1
     #   coverage
     #   mypy
     #   pytest
+tqdm==4.67.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   nltk
 types-click==7.1.8
-    # via -r ./test.in
+    # via -r requirements/test.in
 types-markdown==3.8.0.20250415
-    # via -r ./test.in
+    # via -r requirements/test.in
 types-requests==2.32.4.20250611
-    # via -r ./test.in
+    # via -r requirements/test.in
 types-tabulate==0.9.0.20241207
-    # via -r ./test.in
+    # via -r requirements/test.in
 typing-extensions==4.14.0
     # via
-    #   -c ./base.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   anyio
+    #   beautifulsoup4
     #   black
     #   exceptiongroup
     #   mypy
     #   pydantic
     #   pydantic-core
+    #   pypdf
+    #   python-oxmsg
+    #   typing-inspect
     #   typing-inspection
+    #   unstructured-client
+typing-inspect==0.9.0
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   dataclasses-json
+    #   unstructured-client
 typing-inspection==0.4.1
     # via pydantic
+unstructured-client==0.25.9
+    # via
+    #   -c requirements/./deps/constraints.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
 urllib3==2.4.0
     # via
-    #   -c ./base.txt
-    #   -c ./deps/constraints.txt
+    #   -c requirements/./deps/constraints.txt
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   requests
     #   types-requests
+    #   unstructured-client
+webencodings==0.5.1
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt
+    #   html5lib
+wrapt==1.17.2
+    # via
+    #   -c requirements/base.txt
+    #   -r requirements/base.txt