The honest cost of audiobook production
Professional audiobook narration costs $200-400 per finished hour of audio. An 80,000-word novel produces roughly 8-10 hours of finished audio. Total cost: $1,600-4,000. For most indie authors, that is not a viable option for every book.
AI narration changes the math entirely. OpenAI's tts-1-hd model produces professional-quality audio at $0.030 per 1,000 characters. An 80,000-word novel is roughly 500,000 characters — total API cost around $7.50 (standard) or $15 (HD). With AudioForge handling the chunking and stitching, the process takes an afternoon instead of months.
$2,400
Traditional Route
Professional narration · 8 hours × $300/hr average
$7.50
AudioForge Route (standard quality)
OpenAI tts-1 standard · same 80K-word novel · same-day
Complete step-by-step — from manuscript to published audiobook
- Prepare your manuscriptClean text only — remove formatting symbols, chapter headers (AudioForge adds structure), and any text you do not want narrated (author notes, acknowledgments are separate files).
- Open AudioForge — freeGo to forgewrite.app/AudioForge.html. No account required for preview. Add your OpenAI API key for HD generation.
- Get an OpenAI API key — free to startGo to platform.openai.com → API Keys → Create new key. OpenAI gives new accounts $5 in free credits — enough for 3-4 chapters of testing.
- Preview your first chapter freePaste Chapter 1. Click Preview (Free). Hear your book read back in your browser. Adjust pacing and catch any errors before spending API credits.
- Select your voiceAudition all 6 voices on your opening paragraph. Nova for warm literary tone. Echo for deep thriller. Fable for expressive fantasy. Pick once — use for every chapter.
- Generate HD audio chapter by chapterPaste each chapter, click Generate HD Audio. AudioForge handles splitting, API calls, and stitching automatically. Download one MP3 per chapter.
- Normalize in Audacity (free, 30 seconds per chapter)Download Audacity at audacityteam.org. Open each MP3. Effect → Loudness Normalization → -23 LUFS. Export as MP3 at 192kbps. This step satisfies ACX's RMS requirement.
- Create opening and closing creditsRecord yourself saying: "Title. Written by [name]. Narrated by [AI voice name]." Or generate with AudioForge. Under 30 seconds each.
- Submit to ACX and/or Findaway VoicesACX (acx.com) for Audible distribution. Findaway Voices for 40+ platforms. Non-exclusive lets you do both simultaneously.
Realistic cost breakdown — 80,000-word novel
| Item | Cost | Notes |
|---|---|---|
| AudioForge | Free | Part of ForgeWrite Suite free trial |
| OpenAI TTS (tts-1-hd) | ~$7.50* | 500K chars × $0.015/1K = $7.50 standard · HD $15 |
| Audacity | Free | Open source audio editor |
| ACX submission | Free | No submission fee |
| Findaway Voices | Free to submit | Revenue share only |
| Total production cost | ~$7.50* | vs $1,600-4,000 professional narration |
* OpenAI tts-1 standard at $0.015/1K chars. HD quality (tts-1-hd) costs ~$15 — still 99% less than professional narration.
ForgeWrite Pro users get a further discountForgeWrite Pro ($19.99/month) includes API proxy credits. Regular Pro users can generate audiobook audio through the ForgeWrite proxy at reduced rates — no separate OpenAI account required.