Tip: Speed up audio before transcription to save on OpenAI API costs
Tip: Speed up audio before transcription to save on OpenAI API costs
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Tip: Speed up audio before transcription to save on OpenAI API costs

Shubham Saboo Influencer · 26 Jun 2025 · link 🔗
Shubham Saboo Influencer · 26 Jun 2025 · link 🔗
This guy literally found a hack to cut OpenAI API costs by 33%...🤯
By speeding up audio before transcription.
I had to share this because it's brilliant in its simplicity.
And Yes, this really works:
Run your 40-minute video through ffmpeg at 3x speed.
Upload the 13-minute version instead.
Get the same transcription quality for much less money.
The logic is simple:
OpenAI charges by minutes, so make the minutes shorter.
Shorter audio → lower tokens → lower costs.
But here's the clever part:
AI models handle sped-up audio surprisingly well.
Just like our brains can read text with missing letters,
These models fill in the gaps from faster speech.
His test results:
- Original: 40 minutes (too long for gpt-4o-transcribe)
- 3x speed: 13 minutes, perfect transcription
- Fraction of the cost
One line of code.
Thousands of dollars saved over time.
Sometimes the best hacks are hiding in plain sight.
This is the kind of creative problem-solving that saves real money.
What's the most unconventional cost-cutting trick you've discovered?
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Connect with me → Shubham Saboo
I share daily tips and opensource tutorials on AI Agents, RAG and MCP.
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