OpenAI TTS

50/100

Text-to-speech via OpenAI Audio API (tts-1, gpt-4o-mini-tts).

openai.com

// scorecard · 50/100

verified 1mo ago

methodology →

Agent-readiness20/35

Agent registration (api_key)6/9

Public API5/5

OpenAPI spec0/9

MCP server9/9

llms.txt0/3

Reliability & performance0/15

Actively maintained—

Production-ready0/4

Updated recently—

Pricing6/13

Itemized public pricing6/6

Free tier / trial0/4

Free-tier generosity—

Docs & DX10/12

Docs quality8/8

Public API2/2

Quickstart / examples—

Security & compliance10/12

SOC 26/6

ISO 270012/2

GDPR2/2

Security / trust page—

Openness4/10

Open source0/6

Open / un-gated API4/4

Company maturity0/3

Company size—

Years operating—

// rankings · cost per standard workload

#3 in Text-to-Speech$15/ 1M chars

tts-1 $15/1M chars (tts-1-hd $30)

platform.openai.com/docs/pricing

// overview

OpenAI's Audio API offers three TTS models: gpt-4o-mini-tts (steerable via an instructions parameter), tts-1 (low-latency) and tts-1-hd (higher quality). Up to 13 built-in voices, streamed output, and ~99-language coverage following Whisper.

Best for: Natural-sounding speech with steerable voice characteristics

// pricing

gpt-4o-mini-tts$0.60/1M text in + $12/1M audio out

Steerable voices

tts-1$15/1M chars

Low latency

tts-1-hd$30/1M chars

Higher quality

// security & compliance

✓ SOC 2✓ ISO 27001✓ GDPR✗ HIPAA

// features

13 voices (gpt-4o-mini-tts)
instructions param: accent, emotion, speed, tone
Realtime streaming
6 output formats (MP3, Opus, AAC, FLAC, WAV, PCM)
~99 languages