diff --git a/python/CONNECTOR_DEPENDENCIES.md b/python/CONNECTOR_DEPENDENCIES.md
new file mode 100644
index 000000000000..e4dcc3280541
--- /dev/null
+++ b/python/CONNECTOR_DEPENDENCIES.md
@@ -0,0 +1,76 @@
+# Python connector extras and optional dependencies
+
+Semantic Kernel keeps the base Python install small while exposing additional providers and stores through
+[package extras](pyproject.toml). Install an extra with:
+
+```bash
+pip install "semantic-kernel[<extra>]"
+```
+
+The version ranges below are copied from `pyproject.toml`. When this table and package metadata disagree,
+`pyproject.toml` is authoritative.
+
+## Connectors included in the base install
+
+These public connector surfaces use dependencies already present in the base package and do not require an
+additional Semantic Kernel extra.
+
+| Connector / integration | Import path | Extra | Primary package(s) |
+| --- | --- | --- | --- |
+| OpenAI / Azure OpenAI | `semantic_kernel.connectors.ai.open_ai` | none | `openai >= 2.0.0`, `azure-identity >= 1.13` |
+| In-memory vector store | `semantic_kernel.connectors.in_memory` | none | base package |
+| Brave search | `semantic_kernel.connectors.brave` | none | `aiohttp ~= 3.8` |
+| Google web search | `semantic_kernel.connectors.google_search` | none | `aiohttp ~= 3.8` |
+| OpenAPI plugins | `semantic_kernel.connectors.openapi_plugin` | none | `openapi_core >= 0.18,<0.20`, `prance >= 23.6.21,<26.7.20` |
+| MCP | `semantic_kernel.connectors.mcp` | none for the current base install | `mcp >= 1.26.0,<2.0` |
+
+## Connector extras
+
+| Extra | Connector / integration | Import path | Optional package constraint(s) |
+| --- | --- | --- | --- |
+| `anthropic` | Anthropic AI | `semantic_kernel.connectors.ai.anthropic` | `anthropic ~= 0.32` |
+| `aws` | Amazon Bedrock | `semantic_kernel.connectors.ai.bedrock` | `boto3 >= 1.36.4,<1.43.0` |
+| `azure` | Azure AI Inference, Azure AI Search, Azure Cosmos DB | `semantic_kernel.connectors.ai.azure_ai_inference`, `semantic_kernel.connectors.azure_ai_search`, `semantic_kernel.connectors.azure_cosmos_db` | `azure-ai-inference >= 1.0.0b6`; `azure-core-tracing-opentelemetry >= 1.0.0b11`; `azure-search-documents >= 11.6.0b4,<13.0.0`; `azure-cosmos ~= 4.7` |
+| `chroma` | Chroma vector store | `semantic_kernel.connectors.chroma` | `chromadb >= 0.5,<1.6` |
+| `faiss` | FAISS vector store | `semantic_kernel.connectors.faiss` | `faiss-cpu >= 1.10.0` |
+| `google` | Google AI / Vertex AI | `semantic_kernel.connectors.ai.google` | `google-cloud-aiplatform >= 1.114,<1.134`; `google-genai >= 1.51,<2.21` |
+| `hugging_face` | Hugging Face | `semantic_kernel.connectors.ai.hugging_face` | `transformers[torch] >= 5.5.0,<6.0`; `sentence-transformers >= 2.2,<6.0`; `torch == 2.13.0` |
+| `milvus` | Milvus vector store | `semantic_kernel.connectors.memory_stores.milvus` | `pymilvus >= 2.3,<2.7`; `milvus >= 2.3,<2.3.8` (non-Windows) |
+| `mistralai` | Mistral AI | `semantic_kernel.connectors.ai.mistral_ai` | `mistralai >= 1.2,<2.7.3` |
+| `mongo` | MongoDB / MongoDB Atlas vector stores | `semantic_kernel.connectors.mongodb`, `semantic_kernel.connectors.memory_stores.mongodb_atlas` | `pymongo >= 4.8.0,<4.17`; `motor >= 3.3.2,<3.8.0` |
+| `ollama` | Ollama | `semantic_kernel.connectors.ai.ollama` | `ollama ~= 0.4` |
+| `onnx` | ONNX | `semantic_kernel.connectors.ai.onnx` | Python 3.10: `onnxruntime == 1.22.1`, `onnxruntime-genai == 0.9.0`; Python >3.10: `onnxruntime >= 1.26.0`, `onnxruntime-genai == 0.14.1` |
+| `oracledb` | Oracle vector store | `semantic_kernel.connectors.oracle` | `oracledb >= 3.4.1` |
+| `pinecone` | Pinecone vector store | `semantic_kernel.connectors.pinecone` | macOS/Linux: `pinecone[asyncio, grpc] ~= 7.0`; Windows: `~= 7.3` |
+| `postgres` | PostgreSQL vector store | `semantic_kernel.connectors.postgres` | `psycopg[binary,pool] ~= 3.2` |
+| `qdrant` | Qdrant vector store | `semantic_kernel.connectors.qdrant` | `qdrant-client ~= 1.9` |
+| `redis` | Redis vector store | `semantic_kernel.connectors.redis` | `redis[hiredis] >= 6,<8`; `types-redis ~= 4.6.0.20240425`; `redisvl ~= 0.4` |
+| `sql` | SQL Server vector store | `semantic_kernel.connectors.sql_server` | `pyodbc >= 5.2` |
+| `usearch` | USearch vector store | `semantic_kernel.connectors.memory_stores.usearch` | `usearch >= 2.16,<2.25`; `pyarrow >= 12.0,<26.0` |
+| `weaviate` | Weaviate vector store | `semantic_kernel.connectors.weaviate` | `weaviate-client >= 4.17.0,<5.0` |
+
+## Other optional extras
+
+These extras are package features rather than a single connector module, but are still part of the public installation
+surface and are listed here so the documentation stays in sync with `pyproject.toml`.
+
+| Extra | Purpose | Optional package constraint(s) |
+| --- | --- | --- |
+| `autogen` | AutoGen compatibility | `autogen-agentchat >= 0.2,<0.4` |
+| `copilotstudio` | Copilot Studio integration | `microsoft-agents-copilotstudio-client >= 0.3.1`; `microsoft-agents-activity >= 0.3.1` |
+| `mcp` | Explicit MCP extra / compatibility install | `mcp >= 1.8,<2.0` |
+| `notebooks` | Notebook development/runtime support | `ipykernel >= 6.29,<8.0` |
+| `pandas` | Pandas integration | `pandas ~= 2.2` |
+| `realtime` | Realtime audio/websocket support | `websockets >= 13,<16`; `aiortc >= 1.9.0` |
+
+## CI and maintenance
+
+- `python/pyproject.toml` is the source of truth for extra names and version constraints.
+- `python/tests/unit/test_connector_extras_documentation.py` verifies that every optional-dependency extra declared in
+  `pyproject.toml` is represented in this document.
+- Provider-specific unit and integration tests remain responsible for runtime compatibility. This table does not replace
+  those tests or guarantee that a third-party service is reachable.
+- If an extra is added, renamed, or removed in `pyproject.toml`, update this document in the same pull request.
+
+For local development with every optional dependency, see [DEV_SETUP.md](DEV_SETUP.md) and use
+`uv sync --all-extras --dev`.
diff --git a/python/README.md b/python/README.md
index 6dd080b09e7f..457e41427f10 100644
--- a/python/README.md
+++ b/python/README.md
@@ -23,6 +23,9 @@ pip install --upgrade semantic-kernel[hugging_face]
 pip install --upgrade semantic-kernel[all]
 ```
 
+See [Python connector extras and optional dependencies](CONNECTOR_DEPENDENCIES.md) for the current install-extra and
+third-party dependency matrix.
+
 Supported Platforms:
 - Python: 3.10+
 - OS: Windows, macOS, Linux
diff --git a/python/tests/unit/test_connector_extras_documentation.py b/python/tests/unit/test_connector_extras_documentation.py
new file mode 100644
index 000000000000..14d9c08dd055
--- /dev/null
+++ b/python/tests/unit/test_connector_extras_documentation.py
@@ -0,0 +1,28 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+import re
+from pathlib import Path
+
+
+PYTHON_ROOT = Path(__file__).parents[2]
+PYPROJECT = PYTHON_ROOT / "pyproject.toml"
+CONNECTOR_DOC = PYTHON_ROOT / "CONNECTOR_DEPENDENCIES.md"
+
+
+def _optional_extra_names(pyproject_text: str) -> set[str]:
+    marker = "[project.optional-dependencies]"
+    assert marker in pyproject_text
+
+    optional_block = pyproject_text.split(marker, 1)[1].split("\n[", 1)[0]
+    return set(re.findall(r"^([a-z][a-z0-9_]*)\s*=\s*\[", optional_block, flags=re.MULTILINE))
+
+
+def test_connector_dependency_doc_lists_every_optional_extra():
+    extras = _optional_extra_names(PYPROJECT.read_text(encoding="utf-8"))
+    doc = CONNECTOR_DOC.read_text(encoding="utf-8")
+    documented = set(re.findall(r"\| `([a-z][a-z0-9_]*)` \|", doc))
+
+    missing = sorted(extras - documented)
+    stale = sorted(documented - extras)
+
+    assert extras == documented, f"Missing optional extras: {missing}; stale optional extras: {stale}"