feat: add new openai reasoning models (#8786)

* Add new openai reasoning models

* [autofix.ci] apply automated fixes

* Updates language model, but FE doesn't send a POST for updating template atm

* use chatopenai constants

* [autofix.ci] apply automated fixes

* Add reasoning to language model test

* Remove temp from all reasoning models

* t [autofix.ci] apply automated fixes

* refactor: Update template notes (#8816)

* update templates

* small-changes

* template cleanup

---------

Co-authored-by: Mendon Kissling <59585235+mendonk@users.noreply.github.com>

* ruff

* uv lock

* starter projects update

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Mike Fortman <michael.fortman@datastax.com>
Co-authored-by: Mendon Kissling <59585235+mendonk@users.noreply.github.com>

src/backend/base/langflow/base/models/model.py

@@ -84,12 +84,9 @@ class LCModelComponent(Component):
                 raise ValueError(msg)
 
     async def text_response(self) -> Message:
-        input_value = self.input_value
-        stream = self.stream
-        system_message = self.system_message
         output = self.build_model()
         result = await self.get_chat_result(
-            runnable=output, stream=stream, input_value=input_value, system_message=system_message
+            runnable=output, stream=self.stream, input_value=self.input_value, system_message=self.system_message
         )
         self.status = result
         return result
@@ -176,6 +173,7 @@ class LCModelComponent(Component):
         input_value: str | Message,
         system_message: str | None = None,
     ) -> Message:
+        # NVIDIA reasoning models use detailed thinking
         if getattr(self, "detailed_thinking", False):
             system_message = DETAILED_THINKING_PREFIX + (system_message or "")
 

src/backend/base/langflow/base/models/openai_constants.py

@@ -17,6 +17,13 @@ OPENAI_MODELS_DETAILED = [
     create_model_metadata(provider="OpenAI", name="gpt-3.5-turbo", icon="OpenAI", tool_calling=True),
     # Reasoning Models
     create_model_metadata(provider="OpenAI", name="o1", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o1-mini", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o1-pro", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o3-mini", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o3", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o3-pro", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o4-mini", icon="OpenAI", reasoning=True),
+    create_model_metadata(provider="OpenAI", name="o4-mini-high", icon="OpenAI", reasoning=True),
     # Search Models
     create_model_metadata(
         provider="OpenAI",
@@ -27,7 +34,12 @@ OPENAI_MODELS_DETAILED = [
         preview=True,
     ),
     create_model_metadata(
-        provider="OpenAI", name="gpt-4o-search-preview", icon="OpenAI", tool_calling=True, search=True, preview=True
+        provider="OpenAI",
+        name="gpt-4o-search-preview",
+        icon="OpenAI",
+        tool_calling=True,
+        search=True,
+        preview=True,
     ),
     # Not Supported Models
     create_model_metadata(
@@ -45,16 +57,13 @@ OPENAI_MODELS_DETAILED = [
     create_model_metadata(
         provider="OpenAI", name="gpt-4o-mini-realtime-preview", icon="OpenAI", not_supported=True, preview=True
     ),
-    create_model_metadata(provider="OpenAI", name="o3-mini", icon="OpenAI", reasoning=True, not_supported=True),
-    create_model_metadata(provider="OpenAI", name="o1-mini", icon="OpenAI", reasoning=True, not_supported=True),
 ]
-
+OPENAI_CHAT_MODEL_NAMES = [
-OPENAI_MODEL_NAMES = [
     metadata["name"]
     for metadata in OPENAI_MODELS_DETAILED
-    if not metadata.get("reasoning", False)
+    if not metadata.get("not_supported", False)
+    and not metadata.get("reasoning", False)
     and not metadata.get("search", False)
-    and not metadata.get("not_supported", False)
 ]
 
 OPENAI_REASONING_MODEL_NAMES = [
@@ -78,4 +87,4 @@ OPENAI_EMBEDDING_MODEL_NAMES = [
 ]
 
 # Backwards compatibility
-MODEL_NAMES = OPENAI_MODEL_NAMES
+MODEL_NAMES = OPENAI_CHAT_MODEL_NAMES

src/backend/base/langflow/components/icosacomputing/combinatorial_reasoner.py

@@ -1,7 +1,7 @@
 import requests
 from requests.auth import HTTPBasicAuth
 
-from langflow.base.models.openai_constants import OPENAI_MODEL_NAMES
+from langflow.base.models.openai_constants import OPENAI_CHAT_MODEL_NAMES
 from langflow.custom.custom_component.component import Component
 from langflow.inputs.inputs import DropdownInput, SecretStrInput, StrInput
 from langflow.io import MessageTextInput, Output
@@ -43,8 +43,8 @@ class CombinatorialReasonerComponent(Component):
             name="model_name",
             display_name="Model Name",
             advanced=False,
-            options=OPENAI_MODEL_NAMES,
+            options=OPENAI_CHAT_MODEL_NAMES,
-            value=OPENAI_MODEL_NAMES[0],
+            value=OPENAI_CHAT_MODEL_NAMES[0],
         ),
     ]
 

src/backend/base/langflow/components/models/language_model.py

@@ -7,7 +7,7 @@ from langchain_openai import ChatOpenAI
 from langflow.base.models.anthropic_constants import ANTHROPIC_MODELS
 from langflow.base.models.google_generative_ai_constants import GOOGLE_GENERATIVE_AI_MODELS
 from langflow.base.models.model import LCModelComponent
-from langflow.base.models.openai_constants import OPENAI_MODEL_NAMES
+from langflow.base.models.openai_constants import OPENAI_CHAT_MODEL_NAMES, OPENAI_REASONING_MODEL_NAMES
 from langflow.field_typing import LanguageModel
 from langflow.field_typing.range_spec import RangeSpec
 from langflow.inputs.inputs import BoolInput
@@ -36,9 +36,10 @@ class LanguageModelComponent(LCModelComponent):
         DropdownInput(
             name="model_name",
             display_name="Model Name",
-            options=OPENAI_MODEL_NAMES,
+            options=OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES,
-            value=OPENAI_MODEL_NAMES[0],
+            value=OPENAI_CHAT_MODEL_NAMES[0],
             info="Select the model to use",
+            real_time_refresh=True,
         ),
         SecretStrInput(
             name="api_key",
@@ -57,7 +58,7 @@ class LanguageModelComponent(LCModelComponent):
             name="system_message",
             display_name="System Message",
             info="A system message that helps set the behavior of the assistant",
-            advanced=True,
+            advanced=False,
         ),
         BoolInput(
             name="stream",
@@ -86,6 +87,11 @@ class LanguageModelComponent(LCModelComponent):
             if not self.api_key:
                 msg = "OpenAI API key is required when using OpenAI provider"
                 raise ValueError(msg)
+
+            if model_name in OPENAI_REASONING_MODEL_NAMES:
+                # reasoning models do not support temperature (yet)
+                temperature = None
+
             return ChatOpenAI(
                 model_name=model_name,
                 temperature=temperature,
@@ -118,8 +124,8 @@ class LanguageModelComponent(LCModelComponent):
     def update_build_config(self, build_config: dotdict, field_value: Any, field_name: str | None = None) -> dotdict:
         if field_name == "provider":
             if field_value == "OpenAI":
-                build_config["model_name"]["options"] = OPENAI_MODEL_NAMES
+                build_config["model_name"]["options"] = OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES
-                build_config["model_name"]["value"] = OPENAI_MODEL_NAMES[0]
+                build_config["model_name"]["value"] = OPENAI_CHAT_MODEL_NAMES[0]
                 build_config["api_key"]["display_name"] = "OpenAI API Key"
             elif field_value == "Anthropic":
                 build_config["model_name"]["options"] = ANTHROPIC_MODELS
@@ -129,4 +135,10 @@ class LanguageModelComponent(LCModelComponent):
                 build_config["model_name"]["options"] = GOOGLE_GENERATIVE_AI_MODELS
                 build_config["model_name"]["value"] = GOOGLE_GENERATIVE_AI_MODELS[0]
                 build_config["api_key"]["display_name"] = "Google API Key"
+        elif field_name == "model_name" and field_value.startswith("o1") and self.provider == "OpenAI":
+            # Hide system_message for o1 models - currently unsupported
+            if "system_message" in build_config:
+                build_config["system_message"]["show"] = False
+        elif field_name == "model_name" and not field_value.startswith("o1") and "system_message" in build_config:
+            build_config["system_message"]["show"] = True
         return build_config

src/backend/base/langflow/components/openai/openai_chat_model.py

@@ -5,7 +5,7 @@ from pydantic.v1 import SecretStr
 
 from langflow.base.models.model import LCModelComponent
 from langflow.base.models.openai_constants import (
-    OPENAI_MODEL_NAMES,
+    OPENAI_CHAT_MODEL_NAMES,
     OPENAI_REASONING_MODEL_NAMES,
 )
 from langflow.field_typing import LanguageModel
@@ -45,8 +45,8 @@ class OpenAIModelComponent(LCModelComponent):
             name="model_name",
             display_name="Model Name",
             advanced=False,
-            options=OPENAI_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES,
+            options=OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES,
-            value=OPENAI_MODEL_NAMES[1],
+            value=OPENAI_CHAT_MODEL_NAMES[0],
             combobox=True,
             real_time_refresh=True,
         ),
@@ -97,6 +97,7 @@ class OpenAIModelComponent(LCModelComponent):
     ]
 
     def build_model(self) -> LanguageModel:  # type: ignore[type-var]
+        logger.debug(f"Executing request with model: {self.model_name}")
         parameters = {
             "api_key": SecretStr(self.api_key).get_secret_value() if self.api_key else None,
             "model_name": self.model_name,
@@ -107,10 +108,15 @@ class OpenAIModelComponent(LCModelComponent):
             "timeout": self.timeout,
         }
 
-        logger.info(f"Model name: {self.model_name}")
+        # TODO: Revisit if/once parameters are supported for reasoning models
+        unsupported_params_for_reasoning_models = ["temperature", "seed"]
+
         if self.model_name not in OPENAI_REASONING_MODEL_NAMES:
             parameters["temperature"] = self.temperature if self.temperature is not None else 0.1
             parameters["seed"] = self.seed
+        else:
+            params_str = ", ".join(unsupported_params_for_reasoning_models)
+            logger.debug(f"{self.model_name} is a reasoning model, {params_str} are not configurable. Ignoring.")
 
         output = ChatOpenAI(**parameters)
         if self.json_mode:
@@ -141,7 +147,12 @@ class OpenAIModelComponent(LCModelComponent):
         if field_name in {"base_url", "model_name", "api_key"} and field_value in OPENAI_REASONING_MODEL_NAMES:
             build_config["temperature"]["show"] = False
             build_config["seed"]["show"] = False
-        if field_name in {"base_url", "model_name", "api_key"} and field_value in OPENAI_MODEL_NAMES:
+            # Hide system_message for o1 models - currently unsupported
+            if field_value.startswith("o1") and "system_message" in build_config:
+                build_config["system_message"]["show"] = False
+        if field_name in {"base_url", "model_name", "api_key"} and field_value in OPENAI_CHAT_MODEL_NAMES:
             build_config["temperature"]["show"] = True
             build_config["seed"]["show"] = True
+            if "system_message" in build_config:
+                build_config["system_message"]["show"] = True
         return build_config

src/backend/base/langflow/utils/constants.py

@@ -9,6 +9,7 @@ OPENAI_MODELS = [
 ]
 CHAT_OPENAI_MODELS = [
     "gpt-4o",
+    "gpt-4o-mini",
     "gpt-4-turbo-preview",
     "gpt-4-0125-preview",
     "gpt-4-1106-preview",
@@ -17,6 +18,16 @@ CHAT_OPENAI_MODELS = [
     "gpt-3.5-turbo-1106",
 ]
 
+REASONING_OPENAI_MODELS = [
+    "o1",
+    "o1-mini",
+    "o1-pro",
+    "o3-mini",
+    "o3",
+    "o3-pro",
+    "o4-mini",
+    "o4-mini-high",
+]
 
 ANTHROPIC_MODELS = [
     # largest model, ideal for a wide range of more complex tasks.

src/backend/base/langflow/utils/util.py

@@ -382,6 +382,7 @@ def add_options_to_field(value: dict[str, Any], class_name: str | None, key: str
     options_map = {
         "OpenAI": constants.OPENAI_MODELS,
         "ChatOpenAI": constants.CHAT_OPENAI_MODELS,
+        "ReasoningOpenAI": constants.REASONING_OPENAI_MODELS,
         "Anthropic": constants.ANTHROPIC_MODELS,
         "ChatAnthropic": constants.ANTHROPIC_MODELS,
     }

src/backend/tests/unit/components/agents/test_agent_component.py

@@ -8,7 +8,7 @@ from langflow.base.models.model_input_constants import (
     MODEL_PROVIDERS,
 )
 from langflow.base.models.openai_constants import (
-    OPENAI_MODEL_NAMES,
+    OPENAI_CHAT_MODEL_NAMES,
     OPENAI_REASONING_MODEL_NAMES,
 )
 from langflow.components.agents.agent import AgentComponent
@@ -142,7 +142,7 @@ class TestAgentComponentWithClient(ComponentTestBaseWithClient):
 
         # Iterate over all OpenAI models
         failed_models = []
-        for model_name in OPENAI_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES:
+        for model_name in OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES:
             # Initialize the AgentComponent with mocked inputs
             tools = [CalculatorToolComponent().build_tool()]  # Use the Calculator component as a tool
             agent = AgentComponent(

src/backend/tests/unit/components/models/test_language_model_component.py

@@ -6,7 +6,7 @@ from langchain_google_genai import ChatGoogleGenerativeAI
 from langchain_openai import ChatOpenAI
 from langflow.base.models.anthropic_constants import ANTHROPIC_MODELS
 from langflow.base.models.google_generative_ai_constants import GOOGLE_GENERATIVE_AI_MODELS
-from langflow.base.models.openai_constants import OPENAI_MODEL_NAMES
+from langflow.base.models.openai_constants import OPENAI_CHAT_MODEL_NAMES, OPENAI_REASONING_MODEL_NAMES
 from langflow.components.models.language_model import LanguageModelComponent
 
 from tests.base import ComponentTestBaseWithoutClient
@@ -66,8 +66,8 @@ class TestLanguageModelComponent(ComponentTestBaseWithoutClient):
             "api_key": {"display_name": "API Key"},
         }
         updated_config = component.update_build_config(build_config, "OpenAI", "provider")
-        assert updated_config["model_name"]["options"] == OPENAI_MODEL_NAMES
+        assert updated_config["model_name"]["options"] == OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES
-        assert updated_config["model_name"]["value"] == OPENAI_MODEL_NAMES[0]
+        assert updated_config["model_name"]["value"] == OPENAI_CHAT_MODEL_NAMES[0]
         assert updated_config["api_key"]["display_name"] == "OpenAI API Key"
 
     async def test_update_build_config_anthropic(self, component_class, default_kwargs):