Unverified50% confidenceFactExact time
The OpenAI Responses API provides a `tool_search` tool, supported on gpt-5.4 and later versions, and also supports setting `defer_loading` for functions or MCP servers.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/17/2026
First Seen
Valid until: 1/15/2027
Sources
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