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Merged
merged 12 commits into from
Nov 11, 2025
Merged

chore(llma): update SDKs #367

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5249d02
chore: update LLM SDKs
carlos-marchal-ph Nov 6, 2025
3564d58
fix: fully deprecate Python 3.9
carlos-marchal-ph Nov 6, 2025
498d1cc
Merge branch 'master' into chore(llma)/update-sdks
carlos-marchal-ph Nov 7, 2025
ab1d79b
Merge branch 'master' into chore(llma)/update-sdks
carlos-marchal-ph Nov 10, 2025
bdb374e
empty commit to unstuck CI
carlos-marchal-ph Nov 10, 2025
fb6ce16
Update CHANGELOG.md
carlos-marchal-ph Nov 10, 2025
46f55e0
feat: add python 3.14 compatibility
carlos-marchal-ph Nov 10, 2025
157d53c
fix: notify users if using incompatible pydantic & python combo
carlos-marchal-ph Nov 10, 2025
34cdb98
fix: formatting
carlos-marchal-ph Nov 10, 2025
fb7d0f6
revert: python 3.14 support
carlos-marchal-ph Nov 11, 2025
731276e
Merge branch 'master' into chore(llma)/update-sdks
carlos-marchal-ph Nov 11, 2025
826fe9d
Merge branch 'master' into chore(llma)/update-sdks
carlos-marchal-ph Nov 11, 2025
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2 changes: 1 addition & 1 deletion .github/workflows/ci.yml
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Expand Up @@ -49,7 +49,7 @@ jobs:
runs-on: ubuntu-latest
strategy:
matrix:
python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
python-version: ['3.10', '3.11', '3.12', '3.13']

steps:
- uses: actions/checkout@85e6279cec87321a52edac9c87bce653a07cf6c2
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14 changes: 14 additions & 0 deletions CHANGELOG.md
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@pauldambra pauldambra Nov 10, 2025

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i've not done a release of the python SDK for ages.

i'd be tempted to make it clear in this changelog note that this removes python 3.9 support.

i'd guess there's no user action on how they use the SDK, just whether we explicitly support the version, so no need for a "how to upgrade from 6 to 7" note

if we wanted to be very neat then we'd have a PR that removes 3.9 support, and then a PR that does the llma upgrades and we release those two changes as v7 but imho just making it clear in the changelog is enough

Original file line number Diff line number Diff line change
@@ -1,3 +1,17 @@
# 7.0.0 - 2025-11-11

NB Python 3.9 is no longer supported
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@pauldambra pauldambra Nov 10, 2025

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let's also make clear here that we're dropping pydantic 1.0 support too


- chore(llma): update LLM provider SDKs to latest major versions
- openai: 1.102.0 → 2.7.1
- anthropic: 0.64.0 → 0.72.0
- google-genai: 1.32.0 → 1.49.0
- langchain-core: 0.3.75 → 1.0.3
- langchain-openai: 0.3.32 → 1.0.2
- langchain-anthropic: 0.3.19 → 1.0.1
- langchain-community: 0.3.29 → 0.4.1
- langgraph: 0.6.6 → 1.0.2

# 6.9.3 - 2025-11-10

- feat(ph-ai): PostHog properties dict in GenerationMetadata
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4 changes: 2 additions & 2 deletions README.md
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Expand Up @@ -30,8 +30,8 @@ We recommend using [uv](https://docs.astral.sh/uv/). It's super fast.
## PostHog recommends `uv` so...

```bash
uv python install 3.9.19
uv python pin 3.9.19
uv python install 3.12
uv python pin 3.12
uv venv
source env/bin/activate
uv sync --extra dev --extra test
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4 changes: 2 additions & 2 deletions posthog/ai/langchain/callbacks.py
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@@ -1,8 +1,8 @@
try:
import langchain # noqa: F401
import langchain_core # noqa: F401
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@andrewm4894 andrewm4894 Nov 7, 2025

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@carlos-marchal-ph does this mean we would not support LC <1.* on latest posthog sdk?

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@carlos-marchal-ph carlos-marchal-ph Nov 7, 2025

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That's correct. That's why it's also a major release. It's not ideal but at least it gives user a choice, they can still stay on 6.9. I guess we could backport it and export it as langchain_v0.

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@andrewm4894 andrewm4894 Nov 7, 2025

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hmm just trying to think through users who say have some agents working away using pre 1.0 LC but are doing all new agent dev in LC 1+

what would they do?

i think maybe would be problems for them?

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@andrewm4894 andrewm4894 Nov 7, 2025

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not against any of this but just thinking through what if or worse case scenarios if lots of users start complaining

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@carlos-marchal-ph carlos-marchal-ph Nov 7, 2025

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Nono, makes a lot of sense. I will implement an exported v0 wrapper. A shame that we are shipping all that code though, we really need to rethink how we approach the wrappers at some point.

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@andrewm4894 andrewm4894 Nov 7, 2025

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yeah 100% going to only get more complicated

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@andrewm4894 andrewm4894 Nov 7, 2025

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hmm just trying to think through users who say have some agents working away using pre 1.0 LC but are doing all new agent dev in LC 1+

actually not even sure how possible that is actually - it might sort of be.

@carlos-marchal-ph one option is to just go as-is but we just be ready with a draft pr for the v0 wrapper as a backup in case needed maybe?

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@andrewm4894 andrewm4894 Nov 7, 2025

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eg maybe we just accept that we wont know (since we dont actually have version tracking in the sdk) and just be ready for if it does mess up a lot of folks

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@carlos-marchal-ph carlos-marchal-ph Nov 7, 2025

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That makes sense too. In any case won't merge until Monday just to be safe.

except ImportError:
raise ModuleNotFoundError(
"Please install LangChain to use this feature: 'pip install langchain'"
"Please install LangChain to use this feature: 'pip install langchain-core'"
)

import json
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2 changes: 1 addition & 1 deletion posthog/test/ai/langchain/__init__.py
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@@ -1,5 +1,5 @@
import pytest

pytest.importorskip("langchain")
pytest.importorskip("langchain_core")
pytest.importorskip("langchain_community")
pytest.importorskip("langgraph")
14 changes: 7 additions & 7 deletions posthog/test/ai/langchain/test_callbacks.py
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Expand Up @@ -1125,9 +1125,9 @@ def test_anthropic_chain(mock_client):
)
chain = prompt | ChatAnthropic(
api_key=ANTHROPIC_API_KEY,
model="claude-3-opus-20240229",
model="claude-sonnet-4-5-20250929",
temperature=0,
max_tokens=1,
max_tokens=1024,
)
callbacks = CallbackHandler(
mock_client,
Expand All @@ -1150,12 +1150,12 @@ def test_anthropic_chain(mock_client):
assert gen_args["event"] == "$ai_generation"
assert gen_props["$ai_trace_id"] == "test-trace-id"
assert gen_props["$ai_provider"] == "anthropic"
assert gen_props["$ai_model"] == "claude-3-opus-20240229"
assert gen_props["$ai_model"] == "claude-sonnet-4-5-20250929"
assert gen_props["foo"] == "bar"

assert gen_props["$ai_model_parameters"] == {
"temperature": 0.0,
"max_tokens": 1,
"max_tokens": 1024,
"streaming": False,
}
assert gen_props["$ai_input"] == [
Expand All @@ -1171,7 +1171,7 @@ def test_anthropic_chain(mock_client):
<= approximate_latency
)
assert gen_props["$ai_input_tokens"] == 17
assert gen_props["$ai_output_tokens"] == 1
assert gen_props["$ai_output_tokens"] == 4

assert trace_args["event"] == "$ai_trace"
assert trace_props["$ai_input_state"] == {}
Expand All @@ -1188,9 +1188,9 @@ async def test_async_anthropic_streaming(mock_client):
)
chain = prompt | ChatAnthropic(
api_key=ANTHROPIC_API_KEY,
model="claude-3-opus-20240229",
model="claude-sonnet-4-5-20250929",
temperature=0,
max_tokens=1,
max_tokens=1024,
streaming=True,
stream_usage=True,
)
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2 changes: 1 addition & 1 deletion posthog/version.py
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@@ -1,4 +1,4 @@
VERSION = "6.9.3"
VERSION = "7.0.0"

if __name__ == "__main__":
print(VERSION, end="") # noqa: T201
17 changes: 8 additions & 9 deletions pyproject.toml
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Expand Up @@ -10,14 +10,13 @@ authors = [{ name = "PostHog", email = "hey@posthog.com" }]
maintainers = [{ name = "PostHog", email = "hey@posthog.com" }]
license = { text = "MIT" }
readme = "README.md"
requires-python = ">=3.9"
requires-python = ">=3.10"
classifiers = [
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Developers",
"Operating System :: OS Independent",
"License :: OSI Approved :: MIT License",
"Programming Language :: Python",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: 3.11",
"Programming Language :: Python :: 3.12",
Expand Down Expand Up @@ -66,13 +65,13 @@ test = [
"pytest-timeout",
"pytest-asyncio",
"django",
"openai",
"anthropic",
"langgraph>=0.4.8",
"langchain-core>=0.3.65",
"langchain-community>=0.3.25",
"langchain-openai>=0.3.22",
"langchain-anthropic>=0.3.15",
"openai>=2.0",
"anthropic>=0.72",
"langgraph>=1.0",
"langchain-core>=1.0",
"langchain-community>=0.4",
"langchain-openai>=1.0",
"langchain-anthropic>=1.0",
"google-genai",
"pydantic",
"parameterized>=0.8.1",
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2 changes: 1 addition & 1 deletion setup.py
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Expand Up @@ -14,7 +14,7 @@
PostHog is developer-friendly, self-hosted product analytics.
posthog-python is the python package.

This package requires Python 3.9 or higher.
This package requires Python 3.10 or higher.
"""

# Minimal setup.py for backward compatibility
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2 changes: 1 addition & 1 deletion setup_analytics.py
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Expand Up @@ -47,7 +47,7 @@
PostHog is developer-friendly, self-hosted product analytics.
posthog-python is the python package.

This package requires Python 3.9 or higher.
This package requires Python 3.10 or higher.
"""

# Minimal setup.py for backward compatibility
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