ASR options: Whisper v3 vs Deepgram vs OpenAI Realtime

Findings across noisy calls and accents: - Whisper large-v3: Great offline control, multilingual, customizable; higher latency without optimization. - Deepgram: Strong diarization and streaming; cost-effective at scale; easy APIs. - OpenAI Realtime: Tight integration if you already use 4o; fast, good for voice bots. Tips: - Custom vocabulary boosts brand/entity accuracy. - Post-process with punctuation and casing models. - For privacy, run Whisper on edge GPUs for sensitive meetings. Verdict: Choose by privacy and latency first; WER gaps can be narrowed by cleanup and custom vocab.