Speech 2.8 HD is a MiniMax closed-API speech synthesis (TTS) model. MiniMax Speech 2.8 HD is a text-to-speech model from MiniMax. It is suited for applications that generate spoken audio from text and accepts arbitrary MiniMax voice IDs. Numbers below reflect verified disclosures and empirical benchmark harnesses.
Independent evaluation answering: "Is Speech 2.8 HD the right model for your workload & budget?"
Audio models are rated on their own job list; they are not interchangeable with text assistants.
Dated snapshot metrics aggregated from official evaluators and API providers with visual relative score bars.
Multiple of real-time audio processed. 35x RTFx transcribes a 1-hour audio stream in under 105 seconds.
Percentage of words inserted, deleted, or substituted. Lower WER indicates superior transcription accuracy.
Pairwise preference rating across noisy acoustics, overlapping speakers, and diverse accents.
Acoustic frame alignment architecture engineered for non-autoregressive fast streaming audio decoding.
Compact model sizing allows concurrent multi-channel transcription on consumer GPUs or on-device edge compute.
Local on-premise execution without transmitting proprietary or medical audio recordings to external cloud APIs.
| Benchmark Metric & Meaning | Reported Score & Capability Fill | CompareLLM Review |
|---|---|---|
Context window (tokens) Context Window Capacity (tokens) | 0k tokens | Source not recorded · Sep 21, 2026Maximum input context on the same endpoint. |
Input token price Cost to Prompt (Input tokens) | $100/1M tok | Source not recorded · Sep 21, 2026Published text input price on the endpoint this sheet is read from. |
Maximum output (tokens) Maximum Response Length | 0k tokens | Source not recorded · Sep 21, 2026Maximum completion tokens for one request on the same endpoint. |
Peers in the same closed API frontier speech/audio performance tier — not a jump to an unrelated frontier SKU.
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Models may use different benchmarks and test settings. This is an indicative composite, not a controlled head-to-head comparison or community Elo. Admin-approved sentiment estimates fill categories without accepted benchmark results. Estimates are labelled and do not increase benchmark coverage. Coverage refers to the configured recipe, not confidence.
Release recent-models-2026-09-23-r1 · recipe reported-text-2026-09-11-r1 · method reported-with-estimates-v2 · research through 2026-09-23
Overall unrated: insufficient applicable categories or no cross-task Overall.
Editorial estimate, anchored to the Artificial Analysis arena for this modality, where Speech 2.8 HD scores 1166. Placed by where that sits between Speech 2.8 HD at 1166 and Sonic 3.6 at 1276, the span the board published on 2026-09-21, mapped onto 62-88. Arena Elo is blind human preference, not this category's recipe, so this is an ordering anchor rather than a measurement, and it is never compared against another modality's board. Any accepted result that clears the evidence thresholds replaces it.
As of 2026-09-21 · review on 2026-12-21 · Editorial estimate (not a benchmark result)
Sentiment source 1 →What this model is available as, what it takes to run, and where its identity comes from.
The provider's deployment options have not been reviewed for this model.
speech-2.8-hdminimax/speech-2.8-hdConcise empirical overview formatted for citations and prompt context
Plain-English methodology and leaderboard answers
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