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TTS-1

OpenAI
Model overview

tts-1

A text-to-speech model optimized for speed.

audiospeechtext to speechvoice assistantenterprise access
CompareCompanyRankingsPublic signals
Representative version

tts-1

CompanyOpenAI
ReleaseNot disclosed
Release typeModel release
ParametersNot disclosed
ArchitectureNot disclosed
ContextNot disclosed
Input modalitiestext
Output modalitiesaudio
Tool use / function callingNot disclosed
Structured output / reasoningNot disclosed
Vision / audio / videoConfirmed: Audio
Open weights / LicenseNo open weights / license not applicable
openai-tts-1-current · License not applicable
Vendor APIAvailable
TTS-1 Model | OpenAI APIopenai-tts-1-current · 2026-05-08
OpenRouterNot separately listed on OpenRouter
PricingOfficial pricing page
BenchmarkNo reliable public source
Public signalsNo reliable public source
Use casesvoice assistant / enterprise API / audio and speech / speech
Claim evidenceRelease / model specs / weightsTTS-1 Model | OpenAI APItts-1
OpenRouter

Pricing / context / availability

OpenRouterNot separately listed on OpenRouter
OpenRouter listingNot separately listed in the current OpenRouter public list
Mapped versiontts-1
openai-tts-1-current
PricingOfficial pricing page
ContextNot disclosed
Speed/LatencyNo reliable public source
Snapshot time2026-07-15T20:11:41.551Z
SourceView source
Evidence gaps

Public display boundary

Parameter scale not disclosedRelease date not disclosedOpenRouter not separately verifiedNo reliable benchmark sourceNo public model-card activity countersNo linkable real reviewSpeed/latency not disclosed