Unverified50% confidenceFactExact time
Sending a Responses request to a gateway that only supports Chat Completions returns a NotFoundError (HTTP 404).
1
Sources
50%
Confidence
Long-term
Relevance
10/17/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedWhen setting the default client, you must also set the default API to "chat_completions", otherwise the SDK still sends requests to /v1/responses and returns 404.67% similarUnverifiedScope challenges rely on the OAuth 2.0 standard error response mechanism: when permissions are insufficient, the server returns HTTP 401 with an insufficient_scope error and the required scope list in the WWW-Authenticate response header.64% similarUnverifiedWhen request consumption exceeds the threshold set by PACK_DEFAULT_BUDGET_USD, the interface returns HTTP 402 (Payment Required).62% similarUnverifiedDuring this outage, accessing chat.openai.com often still worked normally, making switching to the web client a temporary workaround for the client-side failure.62% similarUnverifiedHTTP状态码403表示服务端已识别到资源存在但拒绝访问，404表示路由层面找不到对应资源62% similar
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