# Cost of one meeting, USD (prices of 2026-10-26; word and token counts are ASSUMPTIONS)

assumptions: 150 words/minute spoken, 0.75 words/token, summary output 600 tokens, read-back 120 words
prices      : gpt-transcribe $0.0045/min | whisper-1 $0.006/min | gpt-4o-mini $0.15 in / $0.60 out per 1M | tts-1 $15 per 1M chars

 minutes       words  gpt-transc   whisper-1     summary       tts-1   total(gt)
      15       2,250      0.0675      0.0900      0.0008      0.0108      0.0791
      30       4,500      0.1350      0.1800      0.0013      0.0108      0.1471
      60       9,000      0.2700      0.3600      0.0022      0.0108      0.2830
     120      18,000      0.5400      0.7200      0.0040      0.0108      0.5548

transcription is billed on audio duration, not file size: a 60-minute recording costs $0.2700 whatever its encoding.
size of 60 minutes: 16 kHz mono 16-bit WAV = 115.2 MB | 64 kbit/s mp3 = 28.8 MB | 32 kbit/s mp3 = 14.4 MB
minutes that fit in 25,000,000 bytes: WAV 13.0 | 64 kbit/s 52 | 32 kbit/s 104