> ## Documentation Index
> Fetch the complete documentation index at: https://docs.slng.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Arcana v3 (English)
> Synthesize English speech using Rime Arcana v3 TTS model.
export const HostingBanner = ({type = "slng", provider, regions = []}) => {
const isSlng = type === "slng";
const regionLabel = regions.map(r => r.toUpperCase()).join(", ");
return
{isSlng ? "SLNG Sovereign Hosting" : `3rd Party API Hosted by ${provider}`}
{isSlng ? <>
On demand in: {regionLabel}.{" "}
Request here if you want access
in any other of our 11 regions.
: <>
For SLNG Sovereign Hosting in any of our 11 regions{" "}
contact us.
}
;
};
## OpenAPI
````yaml POST /v1/tts/slng/rime/arcana:3-en
openapi: 3.0.3
info:
title: SLNG Gateway API - SLNG TTS
version: 0.1.0
description: Unified API for speech-to-text and text-to-speech services.
contact:
name: SLNG Support
email: support@slng.ai
servers:
- url: https://api.slng.ai
description: Production
- url: https://stageapi.slng.ai
description: Staging
security:
- BearerAuth: []
tags:
- name: Deepgram Aura 2
description: Deepgram Aura 2 for conversational voice agents.
- name: Orpheus English
description: Orpheus TTS with emotion control.
- name: Rime Arcana v2
description: Rime Arcana v2 TTS with multi-language support.
- name: Rime Arcana v3
description: Rime Arcana v3 TTS with multilingual support (English, Hindi).
- name: Rime Coda
description: Rime Coda TTS for Bahasa Indonesian.
- name: Inworld Max 1.5
description: Inworld Max 1.5 for multilingual, expressive synthesis.
paths:
/v1/tts/slng/rime/arcana:3-en:
post:
tags:
- Rime Arcana v3
summary: Arcana v3 (English)
description: Synthesize English speech using Rime Arcana v3 TTS model.
operationId: rime/arcana:3-en
parameters:
- $ref: '#/components/parameters/XRegionSlngArcanaV3En'
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/RimeArcana3TtsRequestEn'
examples:
basic:
summary: Basic English synthesis
value:
text: >-
Hello from Rime Arcana v3 English. Testing text to speech
synthesis.
speaker: astra
responses:
'200':
$ref: '#/components/responses/TtsSynthesisSuccess'
'400':
$ref: '#/components/responses/RimeArcanaBadRequest'
'401':
$ref: '#/components/responses/ProviderUnauthorized'
'500':
$ref: '#/components/responses/RimeArcanaInternalServerError'
'503':
$ref: '#/components/responses/ProviderServiceUnavailable'
components:
parameters:
XRegionSlngArcanaV3En:
name: X-Region-Override
in: header
required: false
description: Target region override. Auto-selected if not provided.
schema:
type: string
enum:
- ap-southeast-2
- asia-south1
- eu-north-1
schemas:
RimeArcana3TtsRequestEn:
description: Rime Arcana v3 TTS request for English.
allOf:
- $ref: '#/components/schemas/RimeArcana3TtsRequestBase'
RimeArcana3TtsRequestBase:
description: Base schema for Rime Arcana v3 TTS requests.
allOf:
- type: object
required:
- speaker
properties:
speaker:
$ref: '#/components/schemas/RimeArcana3Speaker'
- $ref: '#/components/schemas/RimeArcanaTtsRequestCommon'
AudioBinary:
type: string
format: binary
description: Binary audio data.
ProviderErrorResponse:
type: object
description: >
Provider error response. Contains error information from the upstream
provider.
Common errors include invalid speakers, unsupported languages, or
malformed requests.
properties:
error:
type: string
description: >-
Error type or category (e.g., "TTS service error", "Validation
error").
example: TTS service error
status:
type: number
description: >-
Original HTTP status code from the provider (may differ from gateway
response code).
example: 400
details:
type: string
description: >
Detailed error message from the provider. For TTS errors, this
typically includes
the specific validation failure (e.g., invalid speaker ID for the
selected model/language).
example: >-
Rime TTS API error: 400 Bad Request - Invalid argument: Invalid
speaker: aurelie
required:
- error
RimeArcana3Speaker:
type: string
description: >-
Voice speaker ID for Rime Arcana v3. Multilingual speakers supporting
all languages.
default: astra
enum:
- ahmed_mohamed
- akari
- albion
- alfhild
- alzira
- amarante
- anaya
- andersen_johan
- anderson_emily
- anderson_jake
- anderson_james
- anderson_kevin
- andromeda
- anil
- arcade
- arya
- astra
- atrium
- aurelie
- aurelio
- aurélie
- aviva
- baldur
- baltasar
- batin
- bauer_felix
- bennett_emily
- bennett_ryan
- biondi_paul
- bond
- brooks_jordan
- brown_alex
- brown_joshua
- brown_liam
- brown_madison
- brown_matthew
- brown_sophia
- brown_steven
- brunetti_tony
- bruno_katie
- carter_colin
- celeste
- celestino
- celso
- chatterjee_rini
- chen_david
- chen_mei
- clark_tyler
- cohen_emily
- cohen_jared
- collins_emily
- cooper_logan
- cupola
- das_sourav
- davies_james
- dela cruz_maria
- dela_cristina
- destin
- diallo_amara
- dubois_emma
- duncan_colin
- duval_pierre
- eliphas
- estela
- estelle
- esther
- eucalyptus
- evans_jason
- fadil
- fern
- fernandez_carlos
- freya
- goldberg_ryan
- gomez_daniela
- gomez_diego
- gomez_isabel
- gomez_isabella
- gomez_javon
- gonzalez_maya
- gonzalez_michael
- gonzalez_ryan
- grayson_avery
- hanson_ryan
- harris_luke
- harris_lynette
- harrison_brianna
- harrison_joey
- harrison_mary
- hassan_omar
- henderson_brittney
- hernandez_juanita
- holliday_jewel
- isadora
- iyer_arun
- jensen_mikkel
- johnny_jackson
- johnson_amber
- johnson_angela
- johnson_asha
- johnson_avery
- johnson_brianna
- johnson_cynthia
- johnson_elijah
- johnson_james
- johnson_jessica
- johnson_joshua
- johnson_latisha
- johnson_lisa
- johnson_madison
- johnson_malachi
- johnson_marcel
- johnson_mary
- johnson_matt
- johnson_matthew
- johnson_melissa
- johnson_monique
- johnson_nia
- johnson_tasha
- johnson_tia
- johnson_walter
- kelly_aoife
- kelly_jennifer
- kelly_john
- kelly_maureen
- khan_fatima
- khan_umar
- kim_ashley
- kim_daniel
- kim_jaehyun
- kim_sunny
- kima
- lark
- layla
- lee_sarah
- levi_david
- levine_emily
- levine_joshua
- levy_hannah
- li_michael
- li_wei
- li_xiao
- liesel
- lintel
- livet_aurelie
- lorelei
- lucia
- luna
- luz
- lyra
- lúcia
- maddox_emily
- maguire_jason
- malik_ahmad
- mar
- marinelli_giulia
- marlu
- martinez_amber
- martinez_ana
- martinez_dylan
- martinez_jaime
- martinez_leticia
- martinez_rosa
- martinez_ryan
- masonry
- mbunda_james
- mccarthy_james
- mccarthy_teresa
- mcdowell_peter
- mckinley_robert
- mendoza_alonzo
- mendoza_jesus
- mendoza_luz
- merritt_jimmy
- miller_cameron
- miller_dylan
- miller_judy
- miller_kelsey
- miller_lisa
- miller_logan
- miyamoto_akari
- montgomery_elise
- montgomery_emily
- morel_marianne
- morgan_brianna
- morgan_charles
- morgan_jeremy
- morris_colin
- morris_james
- morris_leticia
- morris_melvin
- morton_daine
- moss
- moyo_david
- murphy_colin
- murphy_emily
- murphy_grace
- murphy_hannah
- murphy_liam
- murphy_nolan
- murphy_sean
- neal_colin
- noa
- nova
- novak_emily
- nowak_joanna
- nowak_michal
- nozomi
- o'connor_brian
- oculus
- olsson_erik
- ori
- orion
- parapet
- park_minseo
- park_somin
- park_sumin
- parker_chloe
- patel_amit
- patel_asha
- pham_daniel
- pilaster
- pola
- qadir
- raiden
- ramirez_maya
- ramos_raul
- reddy_arjun
- reddy_sunil
- ren
- ricci_giulia
- ricci_lorenzo
- rodrigues_miguel
- rodriguez_carla
- rodriguez_carlos
- rodriguez_eduardo
- rodriguez_isabela
- rodriguez_miguel
- rosenfeld_steffi
- rossi_matteo
- runa
- sai
- sakina
- sakura
- salik
- santos_angelica
- schmidt_joshua
- schmidt_julia
- schmidt_sophie
- schneider_eric
- schneider_jack
- seraphina
- seraphine
- shai
- sharma_amit
- silva_ana
- singh_anjali
- sirius
- smith_heather
- smith_lisa
- smith_michael
- smith_mike
- sol
- solstice
- stucco
- séraphine
- taru
- tauro
- thalassa
- thomas_sarah
- thompson_kevin
- torres_miguel
- tran_david
- tran_jessica
- tran_tu
- transom
- truss
- tupou_leilani
- ursa
- vashti
- vespera
- violette
- walnut
- wang_mei
- watson_emily
- williams_anna
- williams_brian
- williams_darnell
- williams_jennifer
- williams_jordan
- williams_nathan
- williams_ryan
- williams_terence
- williams_tiffany
- wilson_emma
- wong_kenny
- wright_cooper
- wright_jason
- wright_julianne
- wright_michael
- yukiko
- zahir
- zhang_mei
RimeArcanaTtsRequestCommon:
type: object
description: Common Rime Arcana TTS options.
properties:
text:
type: string
minLength: 1
description: Text to synthesize.
modelId:
$ref: '#/components/schemas/RimeArcanaModelId'
repetition_penalty:
type: number
format: float
default: 1.5
description: >-
The repetition penalty. We do not recommend changing this from the
default value. Typical range is 1 to 2. Float that penalizes new
tokens based on whether they appear in the prompt and the generated
text so far. Values > 1 encourage the model to use new tokens, while
values < 1 encourage the model to repeat tokens.
temperature:
type: number
format: float
default: 0.5
description: >-
The temperature. We do not recommend changing this from the default
value. Typical range is 0 to 1. Float that controls the randomness
of the sampling. Lower values make the model more deterministic,
while higher values make the model more random. Zero means greedy
sampling.
top_p:
type: number
format: float
default: 1
description: >-
The top p. We do not recommend changing this from the default value.
Typical range is 0 to 1. Float that controls the cumulative
probability of the top tokens to consider. Must be in (0, 1]. Set to
1 to consider all tokens.
audioFormat:
$ref: '#/components/schemas/RimeArcanaAudioFormat'
sample_rate:
$ref: '#/components/schemas/RimeArcanaSampleRate'
speed:
type: number
description: Speech rate multiplier (0.25 = half speed, 2.0 = double speed).
minimum: 0.25
maximum: 2
default: 1
required:
- text
RimeArcanaModelId:
type: string
description: 'Model: arcana (most realistic, ~150ms), mistv2 (speed & control, ~70ms).'
enum:
- arcana
- arcana-3
- mistv2
- mist
default: arcana
RimeArcanaAudioFormat:
type: string
description: Output audio format as MIME type.
enum:
- audio/webm;codecs=opus
- audio/ogg;codecs=opus
- audio/mp3
- audio/wav
- audio/pcm
- audio/x-mulaw
default: audio/wav
RimeArcanaSampleRate:
type: integer
description: Output sample rate in Hz. Values above 24000 are upsampled.
default: 24000
enum:
- 8000
- 16000
- 22050
- 24000
- 44100
- 48000
- 96000
responses:
TtsSynthesisSuccess:
description: Synthesis successful.
content:
audio/*:
schema:
$ref: '#/components/schemas/AudioBinary'
RimeArcanaBadRequest:
description: >
Rime Arcana TTS bad request. Common causes include invalid speaker ID
for the
selected language variant, unsupported model, unsupported audio format,
or malformed request body.
content:
application/json:
schema:
$ref: '#/components/schemas/ProviderErrorResponse'
examples:
invalid-speaker:
summary: Invalid speaker ID
description: >
Speaker ID not available for this language variant. Each Arcana
language
has specific voices - check the endpoint schema for valid
speakers.
value:
error: TTS service error
details: >-
Rime TTS API error: 400 Bad Request - Invalid argument:
Invalid speaker: aurelie
invalid-speaker-for-language:
summary: Speaker not available for language
description: Using a speaker from a different language variant.
value:
error: TTS service error
details: >-
Rime TTS API error: 400 Bad Request - Invalid argument:
Invalid speaker: astra
missing-text:
summary: Missing text field
value:
error: Validation error
details: 'Missing required field: text'
unsupported-model:
summary: Unsupported model
description: The specified modelId is not supported by Rime Arcana.
value:
error: TTS service error
details: 'Rime TTS API error: 400 Bad Request - Unsupported model'
ProviderUnauthorized:
description: Invalid or missing API key.
content:
application/json:
schema:
$ref: '#/components/schemas/ProviderErrorResponse'
RimeArcanaInternalServerError:
description: >
Rime Arcana TTS internal error. Note: Some validation errors (e.g.,
invalid speaker)
may currently return 500 instead of 400. Check the error details for
specifics.
content:
application/json:
schema:
$ref: '#/components/schemas/ProviderErrorResponse'
examples:
processing-error:
summary: Processing error
value:
error: TTS service error
details: Internal processing error
invalid-speaker-as-500:
summary: Invalid speaker (returned as 500)
description: |
Invalid speaker errors may currently return 500 instead of 400.
The details field will indicate the actual validation error.
value:
error: TTS service error
details: >-
Rime TTS API error: 400 Bad Request - Invalid argument:
Invalid speaker: aurelie
ProviderServiceUnavailable:
description: Service unavailable.
content:
application/json:
schema:
$ref: '#/components/schemas/ProviderErrorResponse'
securitySchemes:
BearerAuth:
type: http
scheme: bearer
description: |
API key issued by SLNG. Pass as `Authorization: Bearer `.
````