diff --git a/.github/workflows/_release.yml b/.github/workflows/_release.yml
index a458b42eb4..86a089b8b2 100644
--- a/.github/workflows/_release.yml
+++ b/.github/workflows/_release.yml
@@ -377,6 +377,7 @@ jobs:
           XAI_API_KEY: ${{ secrets.XAI_API_KEY }}
           DEEPSEEK_API_KEY: ${{ secrets.DEEPSEEK_API_KEY }}
           PPLX_API_KEY: ${{ secrets.PPLX_API_KEY }}
+          LANGCHAIN_TESTS_USER_AGENT: ${{ secrets.LANGCHAIN_TESTS_USER_AGENT }}
         run: make integration_tests
         working-directory: ${{ inputs.working-directory }}
 
@@ -395,7 +396,7 @@ jobs:
       contents: read
     strategy:
       matrix:
-        partner: [anthropic]
+        partner: [openai]
       fail-fast: false # Continue testing other partners if one fails
     env:
       ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -409,6 +410,7 @@ jobs:
       AZURE_OPENAI_LEGACY_CHAT_DEPLOYMENT_NAME: ${{ secrets.AZURE_OPENAI_LEGACY_CHAT_DEPLOYMENT_NAME }}
       AZURE_OPENAI_LLM_DEPLOYMENT_NAME: ${{ secrets.AZURE_OPENAI_LLM_DEPLOYMENT_NAME }}
       AZURE_OPENAI_EMBEDDINGS_DEPLOYMENT_NAME: ${{ secrets.AZURE_OPENAI_EMBEDDINGS_DEPLOYMENT_NAME }}
+      LANGCHAIN_TESTS_USER_AGENT: ${{ secrets.LANGCHAIN_TESTS_USER_AGENT }}
     steps:
       - uses: actions/checkout@v5
 
diff --git a/.github/workflows/integration_tests.yml b/.github/workflows/integration_tests.yml
index 02709b4a0a..fda2d707a4 100644
--- a/.github/workflows/integration_tests.yml
+++ b/.github/workflows/integration_tests.yml
@@ -155,6 +155,7 @@ jobs:
           WATSONX_APIKEY: ${{ secrets.WATSONX_APIKEY }}
           WATSONX_PROJECT_ID: ${{ secrets.WATSONX_PROJECT_ID }}
           XAI_API_KEY: ${{ secrets.XAI_API_KEY }}
+          LANGCHAIN_TESTS_USER_AGENT: ${{ secrets.LANGCHAIN_TESTS_USER_AGENT }}
         run: |
           cd langchain/${{ matrix.working-directory }}
           make integration_tests
diff --git a/libs/core/langchain_core/language_models/chat_models.py b/libs/core/langchain_core/language_models/chat_models.py
index ee9a394d9a..7b3f92cb20 100644
--- a/libs/core/langchain_core/language_models/chat_models.py
+++ b/libs/core/langchain_core/language_models/chat_models.py
@@ -76,7 +76,7 @@ from langchain_core.utils.utils import LC_ID_PREFIX, from_env
 if TYPE_CHECKING:
     import uuid
 
-    from langchain_model_profiles import ModelProfile  # type: ignore[import-not-found]
+    from langchain_model_profiles import ModelProfile  # type: ignore[import-untyped]
 
     from langchain_core.output_parsers.base import OutputParserLike
     from langchain_core.runnables import Runnable, RunnableConfig
diff --git a/libs/core/langchain_core/version.py b/libs/core/langchain_core/version.py
index 61b0ab4570..611a108116 100644
--- a/libs/core/langchain_core/version.py
+++ b/libs/core/langchain_core/version.py
@@ -1,3 +1,3 @@
 """langchain-core version information and utilities."""
 
-VERSION = "1.0.2"
+VERSION = "1.0.3"
diff --git a/libs/core/pyproject.toml b/libs/core/pyproject.toml
index 26e577f419..ca130f8696 100644
--- a/libs/core/pyproject.toml
+++ b/libs/core/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
     "pydantic>=2.7.4,<3.0.0",
 ]
 name = "langchain-core"
-version = "1.0.2"
+version = "1.0.3"
 description = "Building applications with LLMs through composability"
 readme = "README.md"
 
@@ -35,6 +35,7 @@ typing = [
     "mypy>=1.18.1,<1.19.0",
     "types-pyyaml>=6.0.12.2,<7.0.0.0",
     "types-requests>=2.28.11.5,<3.0.0.0",
+    "langchain-model-profiles",
     "langchain-text-splitters",
 ]
 dev = [
@@ -56,6 +57,7 @@ test = [
     "blockbuster>=1.5.18,<1.6.0",
     "numpy>=1.26.4; python_version<'3.13'",
     "numpy>=2.1.0; python_version>='3.13'",
+    "langchain-model-profiles",
     "langchain-tests",
     "pytest-benchmark",
     "pytest-codspeed",
@@ -63,6 +65,7 @@ test = [
 test_integration = []
 
 [tool.uv.sources]
+langchain-model-profiles = { path = "../model-profiles" }
 langchain-tests = { path = "../standard-tests" }
 langchain-text-splitters = { path = "../text-splitters" }
 
diff --git a/libs/core/tests/unit_tests/language_models/chat_models/test_base.py b/libs/core/tests/unit_tests/language_models/chat_models/test_base.py
index 7ab177ce48..b20623ad6f 100644
--- a/libs/core/tests/unit_tests/language_models/chat_models/test_base.py
+++ b/libs/core/tests/unit_tests/language_models/chat_models/test_base.py
@@ -1217,3 +1217,20 @@ def test_get_ls_params() -> None:
 
     ls_params = llm._get_ls_params(stop=["stop"])
     assert ls_params["ls_stop"] == ["stop"]
+
+
+def test_model_profiles() -> None:
+    model = GenericFakeChatModel(messages=iter([]))
+    profile = model.profile
+    assert profile == {}
+
+    class MyModel(GenericFakeChatModel):
+        model: str = "gpt-5"
+
+        @property
+        def _llm_type(self) -> str:
+            return "openai-chat"
+
+    model = MyModel(messages=iter([]))
+    profile = model.profile
+    assert profile
diff --git a/libs/core/uv.lock b/libs/core/uv.lock
index 072b7092db..137e0d729e 100644
--- a/libs/core/uv.lock
+++ b/libs/core/uv.lock
@@ -960,7 +960,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.0.2"
+version = "1.0.3"
 source = { editable = "." }
 dependencies = [
     { name = "jsonpatch" },
@@ -985,6 +985,7 @@ test = [
     { name = "blockbuster" },
     { name = "freezegun" },
     { name = "grandalf" },
+    { name = "langchain-model-profiles" },
     { name = "langchain-tests" },
     { name = "numpy", version = "2.2.6", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.11'" },
     { name = "numpy", version = "2.3.3", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.11'" },
@@ -1000,6 +1001,7 @@ test = [
     { name = "syrupy" },
 ]
 typing = [
+    { name = "langchain-model-profiles" },
     { name = "langchain-text-splitters" },
     { name = "mypy" },
     { name = "types-pyyaml" },
@@ -1029,6 +1031,7 @@ test = [
     { name = "blockbuster", specifier = ">=1.5.18,<1.6.0" },
     { name = "freezegun", specifier = ">=1.2.2,<2.0.0" },
     { name = "grandalf", specifier = ">=0.8.0,<1.0.0" },
+    { name = "langchain-model-profiles", directory = "../model-profiles" },
     { name = "langchain-tests", directory = "../standard-tests" },
     { name = "numpy", marker = "python_full_version < '3.13'", specifier = ">=1.26.4" },
     { name = "numpy", marker = "python_full_version >= '3.13'", specifier = ">=2.1.0" },
@@ -1045,12 +1048,53 @@ test = [
 ]
 test-integration = []
 typing = [
+    { name = "langchain-model-profiles", directory = "../model-profiles" },
     { name = "langchain-text-splitters", directory = "../text-splitters" },
     { name = "mypy", specifier = ">=1.18.1,<1.19.0" },
     { name = "types-pyyaml", specifier = ">=6.0.12.2,<7.0.0.0" },
     { name = "types-requests", specifier = ">=2.28.11.5,<3.0.0.0" },
 ]
 
+[[package]]
+name = "langchain-model-profiles"
+version = "0.0.2"
+source = { directory = "../model-profiles" }
+dependencies = [
+    { name = "tomli", marker = "python_full_version < '3.11'" },
+    { name = "typing-extensions" },
+]
+
+[package.metadata]
+requires-dist = [
+    { name = "tomli", marker = "python_full_version < '3.11'", specifier = ">=2.0.0,<3.0.0" },
+    { name = "typing-extensions", specifier = ">=4.7.0,<5.0.0" },
+]
+
+[package.metadata.requires-dev]
+dev = [{ name = "httpx", specifier = ">=0.23.0,<1" }]
+lint = [
+    { name = "langchain", editable = "../langchain_v1" },
+    { name = "ruff", specifier = ">=0.12.2,<0.13.0" },
+]
+test = [
+    { name = "langchain", extras = ["openai"], editable = "../langchain_v1" },
+    { name = "langchain-core", editable = "." },
+    { name = "pytest", specifier = ">=8.0.0,<9.0.0" },
+    { name = "pytest-asyncio", specifier = ">=0.23.2,<2.0.0" },
+    { name = "pytest-cov", specifier = ">=4.0.0,<8.0.0" },
+    { name = "pytest-mock" },
+    { name = "pytest-socket", specifier = ">=0.6.0,<1.0.0" },
+    { name = "pytest-watcher", specifier = ">=0.2.6,<1.0.0" },
+    { name = "pytest-xdist", specifier = ">=3.6.1,<4.0.0" },
+    { name = "syrupy", specifier = ">=4.0.2,<5.0.0" },
+    { name = "toml", specifier = ">=0.10.2,<1.0.0" },
+]
+test-integration = [{ name = "langchain-core", editable = "." }]
+typing = [
+    { name = "mypy", specifier = ">=1.18.1,<1.19.0" },
+    { name = "types-toml", specifier = ">=0.10.8.20240310,<1.0.0.0" },
+]
+
 [[package]]
 name = "langchain-tests"
 version = "1.0.0"