MiniMax Speech HD

Overview

MiniMax Speech HD converts text into high-quality audio across multiple languages. It delivers expressive voice synthesis with a 5,000-token context window and is optimized for strong audio quality at a cheap tier. On Kyma, the model runs through an OpenAI-compatible endpoint using a single API key. Every request includes automatic failover if a serving path degrades, and responses return exact billing data in usage.cost alongside an X-Kyma-Model header. This model does not support prompt caching. The model does not support reasoning, vision, or structured outputs. It operates at a medium speed tier, making it suitable for batch processing and asynchronous audio pipelines rather than low-latency conversational applications.

Specs

Field	Value
Model ID	`minimax-speech-hd`
Best for	Production narration, multilingual content, budget-tier brand voice
Context window	5,000
Input modalities	Text
Output modalities	Audio
Speed	Medium
Cost band	Cheap
Release stage	Stable

Pricing

	Price
Per 1,000 characters	$0.07

Billed per character of input text. Every request reports its exact cost in usage.cost; the full media price list is on Pricing.

Use this when

Multilingual Content Narration — Generate expressive voiceovers for videos and podcasts across multiple languages.
Budget Brand Voiceovers — Produce consistent audio assets for marketing campaigns at a lower cost tier.
Audio Translation Workflows — Convert localized text into natural-sounding speech for global distribution.
Extended Audiobook Generation — Process long text passages into continuous audio using the full context window.

Not ideal for

It is not suitable for real-time conversational voice agents or applications requiring sub-second audio latency.

Pick something else when

You need faster audio generation for interactive voice agents: use eleven-turbo-v2-5 or minimax-speech-turbo.

Example

from openai import OpenAI

client = OpenAI(base_url="https://kymaapi.com/v1", api_key="kyma-...")

response = client.audio.speech.create(
    model="minimax-speech-hd",
    voice="...",
    input="Hello from Kyma.",
)

Agent query example

Ask the API which models fit, instead of hardcoding an id:

curl "https://kymaapi.com/v1/models?recommended_for=generate-speech&quality_tier=strong"

FAQ

Does this model support prompt caching? No, this model does not support prompt caching. What happens if the serving path fails during generation? Kyma automatically reroutes the request to a healthy serving path without requiring client-side retries. Can I use this for real-time voice conversations? No, the model operates at a medium speed tier and is optimized for asynchronous or batch audio generation.

​Overview

​Specs

​Pricing

​Use this when

​Not ideal for

​Pick something else when

​Example

​Agent query example

​FAQ