docs: updates for #3080 (#3081)

Author: seratch

docs/models/index.md

@@ -123,6 +123,8 @@ provider = OpenAIProvider(
     use_responses_websocket=True,
     # Optional; if omitted, OPENAI_WEBSOCKET_BASE_URL is used when set.
     websocket_base_url="wss://your-proxy.example/v1",
+    # Optional low-level websocket keepalive settings.
+    responses_websocket_options={"ping_interval": 20.0, "ping_timeout": 60.0},
 )
 
 agent = Agent(name="Assistant")
@@ -203,6 +205,7 @@ If you use a custom OpenAI-compatible endpoint or proxy, websocket transport als
 -   This is the Responses API over websocket transport, not the [Realtime API](../realtime/guide.md). It does not apply to Chat Completions or non-OpenAI providers unless they support the Responses websocket `/responses` endpoint.
 -   Install the `websockets` package if it is not already available in your environment.
 -   You can use [`Runner.run_streamed()`][agents.run.Runner.run_streamed] directly after enabling websocket transport. For multi-turn workflows where you want to reuse the same websocket connection across turns (and nested agent-as-tool calls), the [`responses_websocket_session()`][agents.responses_websocket_session] helper is recommended. See the [Running agents](../running_agents.md) guide and [`examples/basic/stream_ws.py`](https://github.com/openai/openai-agents-python/tree/main/examples/basic/stream_ws.py).
+-   For long reasoning turns or networks with latency spikes, customize websocket keepalive behavior with `responses_websocket_options`. Increase `ping_timeout` to tolerate delayed pong frames, or set `ping_timeout=None` to disable heartbeat timeouts while keeping pings enabled. Prefer HTTP/SSE transport when reliability is more important than websocket latency.
 
 ## Non-OpenAI models
 

docs/running_agents.md

@@ -96,7 +96,9 @@ from agents import Agent, responses_websocket_session
 async def main():
     agent = Agent(name="Assistant", instructions="Be concise.")
 
-    async with responses_websocket_session() as ws:
+    async with responses_websocket_session(
+        responses_websocket_options={"ping_interval": 20.0, "ping_timeout": 60.0},
+    ) as ws:
         first = ws.run_streamed(agent, "Say hello in one short sentence.")
         async for _event in first.stream_events():
             pass
@@ -115,6 +117,8 @@ asyncio.run(main())
 
 Finish consuming streamed results before the context exits. Exiting the context while a websocket request is still in flight may force-close the shared connection.
 
+If long reasoning turns hit websocket keepalive timeouts, increase `ping_timeout` or set `ping_timeout=None` to disable heartbeat timeouts. Use HTTP/SSE transport for runs where reliability matters more than websocket latency.
+
 ### Run config
 
 The `run_config` parameter lets you configure some global settings for the agent run: