Skip to content

Add gateway route support to provider inference #3491

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: main
Choose a base branch
from
Open

Add gateway route support to provider inference #3491

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
48ad9c9
Add gateway route support to provider inference
dmontagu Nov 18, 2025
6dadb70
Merge branch 'main' into dmontagu/add-route-support-to-provider-infer…
dmontagu Nov 20, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 15 additions & 3 deletions pydantic_ai_slim/pydantic_ai/providers/__init__.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@

from __future__ import annotations as _annotations

import re
from abc import ABC, abstractmethod
from typing import Any, Generic, TypeVar

Expand Down Expand Up @@ -153,13 +154,24 @@ def infer_provider_class(provider: str) -> type[Provider[Any]]: # noqa: C901
raise ValueError(f'Unknown provider: {provider}')


_gateway_provider_regex = re.compile('gateway(?::([^/]*))?/(.*)')
"""
This regex matches strings of the forms:
1. gateway/my-upstream-provider
2. gateway:my-route/my-upstream-provider
Copy link
Collaborator

@DouweM DouweM Nov 20, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

infer_provider is used in infer_model, which already uses : as a separator. So gateway:my-route/my-upstream-provider:my-model would be ambiguous. Some model providers even use : (and of course /) in their model name.

I don't think we should support something here that doesn't work as a provider shorthand for infer_model.

Would gateway/my-upstream-provider@my-route be crazy?


The (optional) route is the first group, the upstream provider is the second.
"""


def infer_provider(provider: str) -> Provider[Any]:
"""Infer the provider from the provider name."""
if provider.startswith('gateway/'):
if match := re.match(_gateway_provider_regex, provider):
from .gateway import gateway_provider

upstream_provider = provider.removeprefix('gateway/')
return gateway_provider(upstream_provider)
route = match.group(1)
upstream_provider = match.group(2)
return gateway_provider(upstream_provider, route=route)
elif provider in ('google-vertex', 'google-gla'):
from .google import GoogleProvider

Expand Down