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Atria Dawn Preview vs TTS-1 HD

Comparing Atria Dawn Preview and TTS-1 HD across benchmarks, pricing, and capabilities.

Shanghai AI Laboratory · OpenAI · Updated for 2026

Which is better?

Atria Dawn Preview and TTS-1 HD trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Atria Dawn Preview

  • you need open weights you can self-host or fine-tune

Choose TTS-1 HD

  • you are already invested in the OpenAI ecosystem

At a glance

The differences that matter most.

Atria Dawn Preview
Shanghai AI Laboratory
TTS-1 HD
OpenAI
Benchmark wins
—
—
Input price
— / M
$7500000.00 / M
Output price
— / M
— / M
Context window
—
1,024

Individual benchmarks

12 reported for Atria Dawn Preview · 0 for TTS-1 HD

No common benchmarks found

Atria Dawn Preview and TTS-1 HDdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only TTS-1 HD specifies input context (1,024 tokens).

Shanghai AI Laboratory
Atria Dawn Preview
Input- tokens
Output- tokens
OpenAI
TTS-1 HD
Input1,024 tokens
Output- tokens
Thu Sep 24 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

TTS-1 HD supports multimodal inputs, whereas Atria Dawn Preview does not.

TTS-1 HD can handle both text and other forms of data like images, making it suitable for multimodal applications.

Atria Dawn Preview

Text
Images
Audio
Video

TTS-1 HD

Text
Images
Audio
Video

License

Usage and distribution terms

Atria Dawn Preview is licensed under MIT, while TTS-1 HD uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Atria Dawn Preview

MIT

Open weights

TTS-1 HD

Proprietary

Closed source

Release Timeline

When each model was launched

Atria Dawn Preview was released on 2026-09-11, while TTS-1 HD's release date is not specified.

We can confirm Atria Dawn Preview's release timeline, but cannot make a direct age comparison without TTS-1 HD's release date.

Atria Dawn Preview

Sep 11, 2026

1 weeks ago

TTS-1 HD

—

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Atria Dawn Preview and TTS-1 HD side-by-side, then vote on the output you prefer.

Atria Dawn Preview
✓ Preferred
TTS-1 HD
Open in Playground

FAQ

Common questions about Atria Dawn Preview vs TTS-1 HD.

Which is better, Atria Dawn Preview or TTS-1 HD?

Atria Dawn Preview (Shanghai AI Laboratory) and TTS-1 HD (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Atria Dawn Preview compare to TTS-1 HD in benchmarks?

Atria Dawn Preview scores DeepSearchQA: 96.0%, BrowseComp: 92.5%, CyberGym: 86.5%, MLE-Bench Lite: 86.2%, WideSearch: 81.9%.

What are the context window sizes for Atria Dawn Preview and TTS-1 HD?

Atria Dawn Preview supports an unknown number of tokens and TTS-1 HD supports 1K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Atria Dawn Preview and TTS-1 HD?

Key differences include multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Atria Dawn Preview and TTS-1 HD?

Atria Dawn Preview is developed by Shanghai AI Laboratory and TTS-1 HD is developed by OpenAI.

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