Speech 2.5 HD Preview API

The brand new HD model. Ultimate Similarity, Ultra-High Quality - supports synchronous text-to-speech audio generation with superior rhythm and stability.

Modalities
TextAudio
Input price
$100per 1M tokens
Model type
Text to speech
Released
Jan 5, 2026

Speech 2.5 HD Preview overview

Voice sample

Speech 2.5 HD Preview

Generated through AI/ML API on Nov 3, 2026

0:000:09

Generated from the text and settings shown here.

Speech 2.5 HD Preview specs

Model ID
minimax/speech-2.5-hd-preview
Developer
MiniMax
Input
Text
Output
Audio
Endpoint
POST https://api.aimlapi.com/v1/tts

What is Speech 2.5 HD Preview API?

The brand new HD model. Ultimate Similarity, Ultra-High Quality - supports synchronous text-to-speech audio generation with superior rhythm and stability.

Where to Use Speech 2.5 HD Preview

Voiceovers and narration
Generate natural speech for videos, courses, and IVR at low per-second cost.

Use cases

Speech 2.5 HD Preview is documented as suited to content creation and media production, where written material is turned into professional audio at scale, including podcast and audiobook work.

It is also documented for global e-commerce and marketing, where localized marketing content, product descriptions, and promotional materials are generated in multiple languages while maintaining brand voice consistency.

It is documented for voice agents and IVR systems, with low-latency streaming intended to support conversational customer interactions that sound natural.

It is documented for dubbing and localization, especially when maintaining a speaker’s vocal identity across languages through cross-lingual voice cloning.

Speech 2.5 HD Preview API pricing

Speech 2.5 HD Preview pricing in US dollars
UsagePriceUnit
Input$1001M tokens

Prices from the AI/ML API price list, checked on Nov 4, 2026.

How to use the Speech 2.5 HD Preview API

View docs

Build with your agent

Give your agent the model details, code and documentation.

1Get your API key

Create API key
export AIMLAPI_KEY="8f2b4c7d9a1e6b3f…"

2Make your first request

curl 'https://api.aimlapi.com/v1/tts' \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "model": "minimax/speech-2.5-hd-preview",
  "text": "Your order has shipped. It will arrive on Thursday between nine and eleven in the morning. Reply to this message if you need to change the delivery time."
}'

Related articles

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Speech 2.5 HD Preview FAQ

What inputs and outputs does Speech 2.5 HD Preview support?

Speech 2.5 HD Preview takes text as input and returns audio.

When was Speech 2.5 HD Preview released?

Speech 2.5 HD Preview became available on January 5, 2026.

How much does Speech 2.5 HD Preview cost?

Speech 2.5 HD Preview costs $100 per 1M input tokens on AI/ML API, billed as you go with no subscription.

Who created Speech 2.5 HD Preview?

Speech 2.5 HD Preview was built by MiniMax.

How do I call Speech 2.5 HD Preview on AI/ML API?

Send a request to https://api.aimlapi.com/v1/tts with minimax/speech-2.5-hd-preview as the model id.

Is Speech 2.5 HD Preview available through a single API key?

Yes. Speech 2.5 HD Preview is served through AI/ML API, so the same key and endpoint format used for other models applies.

What makes Speech 2.5 HD Preview different from earlier speech models?

It is described by MiniMax as an HD model with ultimate similarity and ultra-high quality, offering synchronous text-to-speech generation with strong rhythm and stability.

What is the Speech 2.5 HD Preview model ID?

Use minimax/speech-2.5-hd-preview as the model parameter. Requests go to https://api.aimlapi.com/v1/tts with your AI/ML API key.

Start building with Speech 2.5 HD Preview

Speech 2.5 HD Preview API

minimax/speech-2.5-hd-preview

Build with your agent

Give your agent the model details, code and documentation.

1Get your API key

Create API key
export AIMLAPI_KEY="8f2b4c7d9a1e6b3f…"

2Make your first request

curl 'https://api.aimlapi.com/v1/tts' \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "model": "minimax/speech-2.5-hd-preview",
  "text": "Your order has shipped. It will arrive on Thursday between nine and eleven in the morning. Reply to this message if you need to change the delivery time."
}'