OpenAI Releases Python SDK v3.43.0 With Realtime Tool and WebSocket Updates
Source openai/openai-python releases
At a glance
OpenAI has released version 3.43.0 of its Python development kit (SDK). This update focuses on expanding realtime response tools and improving WebSocket (real-time connection channel) features. Several management tools were also updated.
Key points
Realtime responses now support more delegation tools (tools that hand off tasks to be done on your behalf).
WebSockets now show progress in more detail by collecting it together.
A new feature separates WebSocket connections when many arrive at once, so a problem in one channel does not spread to the others.
Internal dependencies, including the GitHub automation tool and the Python release tool, were also updated to their latest versions.
Why it matters
Developers who use OpenAI features in Python need updated tools, and this release changes them.
Original article
v3.43.0
openai/openai-python releases · Nov 4, 2026, 3:05 AM GMT+9 · github.com
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