Tasks and inputs
MiniMax Speech 2.8 HD is listed for Text-to-speech. It accepts text and produces audio. Use the publisher’s input format and preprocessing for your chosen deployment.
SyncDev model directory · Profile updated Oct 7, 2026
MiniMax Speech 2.8 HD converts text to speech with voice, pronunciation and expressive controls.
The specification score summarizes recorded features and limits. It is not a benchmark result.
Recorded modality support shows what this model can accept and produce. An undocumented modality is shown as unknown rather than assumed to be unsupported.
Accepts
Produces
MiniMax Speech 2.8 HD converts text to speech with voice, pronunciation and expressive controls.
The HD route is intended for detailed narration and voice quality. MiniMax’s model overview describes support for 40 languages, seven emotion settings and sound tags. The speech API exposes voice selection and controls for speed, volume and pitch, with pronunciation overrides for words that need a specific reading.
The WebSocket workflow starts a task, sends text and finishes the task while receiving audio. Configure the returned format and sample rate to match the player or downstream editor. Keep a consistent voice ID across related segments, and avoid joining audio chunks with incompatible settings.
Use a product introduction, a passage with proper names and a sentence whose meaning depends on emphasis as a trial set. Check pronunciation, pauses, intelligibility and whether the selected voice remains consistent across segments. In a live interface, measure the delay before useful speech begins and what happens when the user interrupts.
The published core rate card lists $100 per million characters for this route. Character billing is different from language-model token billing. Estimate a narration budget from the actual script and the number of revisions; cloned voices and voice-design operations have separate charges.
Publisher documentation · Publisher documentation · Publisher documentation
Compare the model on the work you need to complete.
MiniMax Speech 2.8 HD is listed for Text-to-speech. It accepts text and produces audio. Use the publisher’s input format and preprocessing for your chosen deployment.
Compare pronunciation, voice consistency and time to the first playable audio. Check the service’s billing unit for the actual script.
Use the model identifier and account requirements for the selected API route. Confirm its request limits and output format with one complete task before connecting a larger workflow.
These records share a directory category. Check the source card, output type and deployment requirements before treating a model as a replacement.
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xAI
Grok Voice TTS 1.0 from xAI: Convert text into spoken audio with a single API call. The API supports a rich set of expressive voices, inline speech tags for fine-grained delivery control, and output formats from high-fidelity MP3 to telephony-optimized μ-law.
OpenAI
GPT-Realtime-2.1 from OpenAI: Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior.
Gemini 3.5 Live Translate Preview from Google: Low-latency audio-to-audio model for real-time speech translation across 70+ languages.
Gemini 3.1 Flash TTS Preview from Google: Low-latency speech generation with steerable prompts and expressive audio tags.