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Model infoModelsSnapshot: 15 Oct 2026

Xiaomi / MiMo / MiMo speech synthesis

MiMo V2 TTS

Earlier speech synthesis model with natural-language style control, expressive vocal events and singing. The direct selector was replaced by V2.5 TTS.

retiredClosed weightsSpeech generation
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
9 of 20 specification fields collected
Context windowNot collectedAwaiting source review
Maximum outputNot collectedAwaiting source review
Input billingSee billing notesXiaomi MiMo API
Output billingSee billing notesAccess and billing notes below

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
Not collected
Maximum output
Not collected
Reasoning
Not collected
Tool calling
Not collected
Structured output
Not collected
Streaming
Not collected
Batch processing
Not collected
Fine-tuning
Not collected
Knowledge cutoff
Not collected
Parameters
Not collected
Architecture
Audio tokenizer with multi-codebook joint speech–text modelingSource for Architecture (opens in a new tab)
Languages
Chinese, English, Northeastern Mandarin, Sichuan dialect, Henan dialect, Cantonese, Taiwanese accentSource for Languages (opens in a new tab)

Named language, dialect and accent examples, not a complete language list.

Context caching
Not collected
Published training data
More than 100 million hours of speech in pretrainingSource for Published training data (opens in a new tab)

Provider-reported training scale, not runtime duration or a current TTS 2.5 parameter claim.

Published training method
Large-scale pretraining followed by multi-dimensional reinforcement learningSource for Published training method (opens in a new tab)
Published price
Historical limited-time free access; selector now retiredSource for Published price (opens in a new tab)

Access & pricing

Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.

API model ID
mimo-v2-tts
Access
Selector retired June 30, 2026 after replacement by mimo-v2.5-tts on June 27. The default voice was remapped by cluster.
Regions
API cluster/account specific; no residency or jurisdiction guarantee inferred.

Endpoint pricing has not been collected. Check the provider for applicable rates.

Data & enterprise terms

Retention, training use, regional processing and enterprise terms have not been summarized for this endpoint.

Caching

Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.

01 / INITIAL INPUTProcess & retain

The system processes eligible input and retains reusable state.

02 / LATER REQUESTCheck available state

Reuse depends on matching input, session state and the cache policy.

03 / CACHE HITReuse & generate

Reusing state can reduce repeated work. Any charges follow the billing rules below.

Xiaomi MiMo API

mimo-v2-tts
Not verified
How it works
Not collected
Minimum reusable input
Not collected
Lifetime & refresh
Not collected
How to enable it
Not collected
Usage fields
Not collected
Billing rules
Not collected
Limits & data boundaries
Not collected

No verified cache rate for this endpoint. An empty rate is not a zero charge.

What the measurements say

No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.

Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.

The record behind the model

Why it is included

Inferred closed-weight classification for this exact hosted MiMo release from the original release description and developer public-weight inventory. The matching weights were not found. Later MiMo V2.5/V2.6 language weights and MiMo V2.5 ASR are explicitly public and are not substituted for this release; public MiMo-Audio components do not establish public weights for the separate TTS service.

Classification evidence (opens in a new tab)

Lifecycle dates

Released18 Mar 2026Source (opens in a new tab)
Direct API began routing to successor27 Jun 2026Source (opens in a new tab)
Direct API selector retired at 00:00 UTC+830 Jun 2026Source (opens in a new tab)

Sources reviewed