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MiniMax Speech-2.6-turbo Async Long TTS
MiniMax’s high-definition text-to-speech model, Compared to Speech 02 released in May, Speech 2.6 has three major breakthroughs: stronger multilingual expressiveness, more accurate voice replication, and broader coverage with 40 languages.
Best suited for long-form text-to-speech generation, such as entire books. Task queue times may be longer. For short sentence generation, voice chat, or online social scenarios, we recommend using synchronous TTS.

Request Headers

Content-Type
string
required
Supports: application/json
Authorization
string
required
Bearer authentication format, for example: Bearer {{API Key}}.

Request Body

text
string
required
The text to be synthesized. Maximum length: 50,000 characters.
voice_setting
object
required
audio_setting
object
pronunciation_dict
object
language_boost
string
default:"null"
Enhances recognition of specified minor languages and dialects. Setting this parameter can improve speech performance in the specified language/dialect scenarios. If the minor language type is not clear, you can set it to “auto” and the model will automatically determine the language type. Supported values:'Chinese', 'Chinese,Yue', 'English', 'Arabic', 'Russian', 'Spanish', 'French', 'Portuguese', 'German', 'Turkish', 'Dutch', 'Ukrainian', 'Vietnamese', 'Indonesian', 'Japanese', 'Italian', 'Korean', 'Thai', 'Polish', 'Romanian', 'Greek', 'Czech', 'Finnish', 'Hindi', 'Bulgarian', 'Danish', 'Hebrew', 'Malay', 'Persian', 'Slovak', 'Swedish', 'Croatian', 'Filipino', 'Hungarian', 'Norwegian', 'Slovenian', 'Catalan', 'Nynorsk', 'Tamil', 'Afrikaans', 'auto'
voice_modify
object
Voice FX settings. Supported audio formats for this parameter: mp3, wav, flac

Response

task_id
string
Use the task_id to request the Task Result API to retrieve the generated outputs.
Last modified on February 5, 2026