GPT Audio
GPT Audio has 2 audio/speech API providers. The lowest price is — from OpenRouter. 2 providers auto-refresh every 6 h (Updated 2h ago). Suitable for TTS, ASR, and realtime voice applications.
Frequently Asked Questions
How is GPT Audio API billed?
TTS models are typically charged per character or per minute; ASR models per minute of audio; realtime speech per session second. See the Unit column in the table for each provider's billing type.
Which provider offers the cheapest GPT Audio API?
The lowest current price is — from OpenRouter. Prices update in real time — bookmark this page for the latest rates.
Can I use GPT Audio API from China?
Providers marked 🇨🇳 in the table support China-mainland access. Check each provider's documentation for details.
How often is GPT Audio API pricing updated?
2 sources on this page auto-scrape every ~6 hours (Updated 2h ago).
How reliable is the GPT Audio API pricing data?
Prices are sourced from official provider pricing pages and periodically verified. For critical decisions, confirm the latest price via the provider's official link.
How can I tell if a price is auto-scraped or manually maintained?
Each provider row shows a small label next to the name: gray "Updated Xh ago" means auto-scraped; gray "Manually maintained" means human-curated. Auto-scraped data older than 24 hours shows an amber staleness warning.
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