However, commenters around here noted that these have likely not been fine-tuned to correlate with accuracy - for plaintext LLM uses. Would be interested in hearing finding for MLLM use-cases!
No, there is no vision LLM that produces confidence numbers to my knowledge.
The AI says it's 100% confident that it's hallucinations are correct.
I don't think openAI's api for gpt4o-mini has any such mechanism.