OpenAI model product
TTS 1 HD
TTS 1 HD is an OpenAI high-definition text-to-speech model.
Updated Sep 8, 2026. Default version: TTS-1 HD
LLMBoard Text-to-Speech Score56.1TTS-1 HD
Coverage35%1 benchmark families
Context windowN/ATokens
Native catalog price$30 / 1M characters1M characters
TTS 1 HD Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
TTS 1 HD Benchmark Results
Benchmark scores for TTS-1 HD.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkArtificial Analysis Text To Speech | Score1,106.00 elo | Rank31 | Participants96 | Percentile68.42% | EvidenceB | EvaluatedN/A |
TTS 1 HD Arena Results
Preference and agent-evaluation results for the default version.
No Arena results
The default version does not have a matching Arena result yet.
TTS 1 HD Pricing
Prices are shown in the model's native media unit and resolution tier.
- Native price
- $30 / 1M characters
- Price unit
- 1M characters
- Tier
- Standard
- Tracked offerings
- 1
Sort by
Provider | Provider model ID | Region | Native price | Unit | Tier | Updated |
|---|
| ProviderOpenAI | Provider model IDtts-1-hd | Regionglobal | Native price$30 / 1M characters | Unit1M characters | TierN/A | Updated |
Media catalog prices are not converted into token input or output prices.
TTS 1 HD Runtime Performance
Provider-specific output speed and catalog latency for TTS-1 HD. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
TTS 1 HD Specifications
Technical details for the model's default version.
- Version
- TTS-1 HD
- Released
- Unknown
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- N/A
- Max output
- N/A
- Inputs
- text
- Outputs
- audio
- Open weights
- No
- License
- Unspecified
TTS 1 HD Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionTTS-1 HD | ReleasedN/A | LLMBoard56.13 | ParametersN/A | ContextN/A | Max outputN/A | Open weightsNo | LicenseUnspecified |
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What is TTS 1 HD?
Key information about TTS 1 HD and its available data.
TTS 1 HD is a text-to-speech model from OpenAI. It is described as a high-definition model.
Data as of 2026-09-08.
FAQ
Common questions about TTS 1 HD.
When was TTS 1 HD released?
A release date is not available for the default version.
How much does TTS 1 HD cost?
TTS 1 HD's current catalog price is $30 / 1M characters.
Who created TTS 1 HD?
TTS 1 HD was created by OpenAI.
What is the context window for TTS 1 HD?
A context window is not available for the default version.
Is TTS 1 HD open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer TTS 1 HD?
1 provider offerings are linked to the default version.