OpenAI API Error model_not_found: The model does not exist or you do not have access

Error✕ Not retryable · fix the payloadHTTP 404 Not FoundAI Provider

TL;DR · 10-second read

Typo in the model ID, a retired snapshot, or a model your project is not allowed to use. List available models with GET /v1/models using the same key.

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What you see · exact log / response

{"error":{"message":"The model `gpt-4o-mini-2099` does not exist or you do not have access to it.","type":"invalid_request_error","param":null,"code":"model_not_found"}}

Fix

Being written

Copy-paste fixes for model_not_found are in the enrichment queue

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Last verified 2026-10-22 · Source: OpenAI error-code guide + SDK exception classes · Official docs ↗ · ~5,400 searches/mo