fix: widen openai version constraint to allow >=1.90.0

This fixes the dependency version conflict between CrewAI and packages like
mem0ai that require openai>=1.90.0.

Changes:
- Updated openai constraint from ~=1.83.0 to >=1.83.0,<2.0.0
- Added tests to verify the constraint allows mem0ai compatibility
- Added tests to verify all OpenAI imports used by CrewAI are available

Fixes #4098

Co-Authored-By: João <joao@crewai.com>

lib/crewai/pyproject.toml

@@ -10,7 +10,7 @@ requires-python = ">=3.10, <3.14"
 dependencies = [
     # Core Dependencies
     "pydantic~=2.11.9",
-    "openai~=1.83.0",
+    "openai>=1.83.0,<2.0.0",
     "instructor>=1.3.3",
     # Text Processing
     "pdfplumber~=0.11.4",

lib/crewai/tests/test_dependency_constraints.py

@@ -0,0 +1,66 @@
+"""Test that dependency constraints are properly configured to avoid conflicts."""
+
+from pathlib import Path
+
+import tomli
+
+
+def test_openai_version_constraint_allows_mem0ai_compatibility():
+    """Test that the openai version constraint allows versions >= 1.90.0.
+
+    This test ensures that the openai dependency constraint is flexible enough
+    to allow installation alongside packages like mem0ai that require openai>=1.90.0.
+
+    See: https://github.com/crewAIInc/crewAI/issues/4098
+    """
+    pyproject_path = Path(__file__).parent.parent / "pyproject.toml"
+
+    with open(pyproject_path, "rb") as f:
+        pyproject = tomli.load(f)
+
+    dependencies = pyproject.get("project", {}).get("dependencies", [])
+
+    openai_dep = None
+    for dep in dependencies:
+        if dep.startswith("openai"):
+            openai_dep = dep
+            break
+
+    assert openai_dep is not None, "openai dependency not found in pyproject.toml"
+
+    assert "~=" not in openai_dep, (
+        f"openai dependency uses ~= operator which is too restrictive: {openai_dep}. "
+        "This causes conflicts with packages like mem0ai that require openai>=1.90.0"
+    )
+
+    assert ">=" in openai_dep, (
+        f"openai dependency should use >= operator for minimum version: {openai_dep}"
+    )
+
+    assert "1.83.0" in openai_dep, (
+        f"openai dependency should have minimum version 1.83.0: {openai_dep}"
+    )
+
+
+def test_openai_imports_are_available():
+    """Test that all OpenAI imports used by CrewAI are available.
+
+    This test verifies that the OpenAI SDK version installed provides
+    all the imports that CrewAI depends on.
+    """
+    from openai import APIConnectionError, AsyncOpenAI, NotFoundError, OpenAI, Stream
+    from openai.lib.streaming.chat import ChatCompletionStream
+    from openai.types.chat import ChatCompletion, ChatCompletionChunk
+    from openai.types.chat.chat_completion import Choice
+    from openai.types.chat.chat_completion_chunk import ChoiceDelta
+
+    assert OpenAI is not None
+    assert AsyncOpenAI is not None
+    assert Stream is not None
+    assert APIConnectionError is not None
+    assert NotFoundError is not None
+    assert ChatCompletion is not None
+    assert ChatCompletionChunk is not None
+    assert ChatCompletionStream is not None
+    assert Choice is not None
+    assert ChoiceDelta is not None