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chore(core,langchain,openai): refresh stale OpenAI model references (#37487)

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This commit is contained in:
Mason Daugherty
2026-05-17 23:06:42 -07:00
committed by GitHub
parent 73d4fd98c2
commit 6c091564ac
21 changed files with 73 additions and 97 deletions
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34
libs/core/langchain_core/callbacks/usage.py
View File

@@ -23,7 +23,7 @@ class UsageMetadataCallbackHandler(BaseCallbackHandler):
from langchain.chat_models import init_chat_model
from langchain_core.callbacks import UsageMetadataCallbackHandler
llm_1 = init_chat_model(model="openai:gpt-4o-mini")
llm_1 = init_chat_model(model="openai:gpt-5.5")
llm_2 = init_chat_model(model="anthropic:claude-haiku-4-5-20251001")
callback = UsageMetadataCallbackHandler()
@@ -32,18 +32,6 @@ class UsageMetadataCallbackHandler(BaseCallbackHandler):
callback.usage_metadata
```
```txt
{'gpt-4o-mini-2024-07-18': {'input_tokens': 8,
'output_tokens': 10,
'total_tokens': 18,
'input_token_details': {'audio': 0, 'cache_read': 0},
'output_token_details': {'audio': 0, 'reasoning': 0}},
'claude-haiku-4-5-20251001': {'input_tokens': 8,
'output_tokens': 21,
'total_tokens': 29,
'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}
```
!!! version-added "Added in `langchain-core` 0.3.49"
"""
@@ -109,7 +97,7 @@ def get_usage_metadata_callback(
from langchain.chat_models import init_chat_model
from langchain_core.callbacks import get_usage_metadata_callback
llm_1 = init_chat_model(model="openai:gpt-4o-mini")
llm_1 = init_chat_model(model="openai:gpt-5.5")
llm_2 = init_chat_model(model="anthropic:claude-haiku-4-5-20251001")
with get_usage_metadata_callback() as cb:
@@ -118,24 +106,6 @@ def get_usage_metadata_callback(
print(cb.usage_metadata)
```
```txt
{
"gpt-4o-mini-2024-07-18": {
"input_tokens": 8,
"output_tokens": 10,
"total_tokens": 18,
"input_token_details": {"audio": 0, "cache_read": 0},
"output_token_details": {"audio": 0, "reasoning": 0},
},
"claude-haiku-4-5-20251001": {
"input_tokens": 8,
"output_tokens": 21,
"total_tokens": 29,
"input_token_details": {"cache_read": 0, "cache_creation": 0},
},
}
```
!!! version-added "Added in `langchain-core` 0.3.49"
"""

2
libs/core/langchain_core/messages/utils.py
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@@ -1267,7 +1267,7 @@ def trim_messages(
messages,
max_tokens=45,
strategy="last",
token_counter=ChatOpenAI(model="gpt-4o"),
token_counter=ChatOpenAI(model="openai:gpt-5.5"),
# Most chat models expect that chat history starts with either:
# (1) a HumanMessage or
# (2) a SystemMessage followed by a HumanMessage

2
libs/core/langchain_core/output_parsers/string.py
View File

@@ -19,7 +19,7 @@ class StrOutputParser(BaseTransformOutputParser[str]):
from langchain_core.output_parsers import StrOutputParser
from langchain_openai import ChatOpenAI
model = ChatOpenAI(model="gpt-4o")
model = ChatOpenAI(model="openai:gpt-5.5")
parser = StrOutputParser()
# Get string output from a model

8
libs/core/langchain_core/runnables/fallbacks.py
View File

@@ -605,16 +605,16 @@ class RunnableWithFallbacks(RunnableSerializable[Input, Output]):
from langchain_openai import ChatOpenAI
from langchain_anthropic import ChatAnthropic
gpt_4o = ChatOpenAI(model="gpt-4o")
gpt_55 = ChatOpenAI(model="openai:gpt-5.5")
claude_3_sonnet = ChatAnthropic(model="claude-sonnet-4-5-20250929")
model = gpt_4o.with_fallbacks([claude_3_sonnet])
model = gpt_55.with_fallbacks([claude_3_sonnet])
model.model_name
# -> "gpt-4o"
# -> "gpt-5.5"
# .bind_tools() is called on both ChatOpenAI and ChatAnthropic
# Equivalent to:
# gpt_4o.bind_tools([...]).with_fallbacks([claude_3_sonnet.bind_tools([...])])
# gpt_55.bind_tools([...]).with_fallbacks([claude_3_sonnet.bind_tools([...])])
model.bind_tools([...])
# -> RunnableWithFallbacks(
runnable=RunnableBinding(bound=ChatOpenAI(...), kwargs={"tools": [...]}),