Voices, Voice IDs, and Supported Languages

Curated voice IDs you can paste straight into a TTS request, plus the API call for filtering the full 217-voice catalog. The model cards remain the canonical source for the complete catalog — this page is the fastest path from “I need a voice” to “I have a voice_id”.

Pairing rule. Lightning v3.1 voice IDs only work with "model": "lightning_v3.1" (or with model omitted — the default). Lightning v3.1 Pro voice IDs only work with "model": "lightning_v3.1_pro". Mismatched pairing returns synthesised audio in the wrong voice or no audio at all. See the Pro model card and v3.1 model card for the full catalogs.

Quick pick by use case

Use case	Recommended voice	Model	Why
US conversational, female	`kaitlyn`	`lightning_v3.1_pro`	Pro pool, natural American accent
US conversational, male	`blake`	`lightning_v3.1_pro`	Pro pool, natural American accent
UK conversational, female	`sophie`	`lightning_v3.1_pro`	Pro pool, British accent
UK conversational, male	`sam`	`lightning_v3.1_pro`	Pro pool, British accent
Indian English + Hindi, female	`meher`	`lightning_v3.1_pro`	Pro pool, Indian voices code-switch en↔hi
Indian English + Hindi, male	`aviraj`	`lightning_v3.1_pro`	Pro pool, Indian voices code-switch en↔hi
US English, broad coverage	`magnus` (M) / `olivia` (F)	`lightning_v3.1`	Standard pool, 217-voice catalog access
Hindi (Devanagari script)	`devansh` (M) / `sunidhi` (F)	`lightning_v3.1`	Standard pool, Hindi-trained voices
Tamil	`jeevan` (M) / `rajeshwari` (F)	`lightning_v3.1`	Standard pool, Tamil-trained voices
Spanish (European)	`marcos` (M) / `daniella` (F)	`lightning_v3.1`	Standard pool, Spanish-trained voices

Lightning v3.1 Pro — by accent + gender

Premium pool with a curated catalog. The accent pools below are English-focused; Indian Pro voices additionally code-switch to Hindi when language: hi is set (or language is omitted, defaulting to en + hi). The Pro pool also includes dedicated voices for 29 additional languages — 9 Indic, 8 Asian & Middle Eastern, 12 European (including Dutch and Swedish) — listed in the accordions below. Pass the matching ISO 639-1 code in the language body parameter, or use auto to route across all supported languages with any English/Hindi voice.

American (18 voices)

Female: kaitlyn, savannah, amelia, zoe, ruby, leah, jenna, kate, molly, sara, fiona

Male: blake, austin, henry, jack, leo, luke, owen

British (12 voices)

Female: sophie, ellie, cressida, ottilie, elowen, seraphina

Male: sam, henry, benedict, cormac, rupert, finley

Indian (13 voices — code-switch English + Hindi)

Female: rhea, zariya, kareena, mishka, inaaya, saira, meher, aarini

Male: aviraj, vyom, zoravar, reyansh, ahan

Indian languages (67 voices — 9 languages)

Pair each voice with its language code, e.g. "language": "ta" with a Tamil voice.

Language	Code	Female voices	Male voices
Marathi	`mr`	`mrunal`, `manasi`, `ketaki`, `tejaswini`	`mandar`, `tushar`
Tamil	`ta`	`malar`, `nila`, `tamilselvi`	`mathan`, `dinesh`, `prabhu`, `ezhil`, `kavin`, `tamizh`, `barath`, `sakthi`, `murugan`
Malayalam	`ml`	`parvathy`, `lakshmi`	`vishnu`, `sreenath`, `unni`, `aravindan`
Telugu	`te`	`sravani`, `swathi`	`naveen`, `charan`, `sasank`, `bhaskar`, `gopal`, `manohar`
Kannada	`kn`	`spoorthi`, `rashmi`, `varsha`, `sahana`	`rakshith`, `kishore`, `yogesh`, `gowtham`, `shankar`, `basava`
Punjabi	`pa`	`jasleen`, `manmeet`	`rajdeep`, `tejinder`, `sukhdeep`, `amrit`, `gagandeep`
Bengali	`bn`	—	`rajib`, `tanmoy`, `subhro`, `arghya`, `indranil`
Odia	`or`	`sasmita`, `ankita`	`subrat`, `debasish`, `sambit`, `pratik`, `rakesh`, `smruti`
Gujarati	`gu`	`krupa`, `riddhi`	`jignesh`, `mit`, `keval`

Asian & Middle Eastern languages (21 voices — 8 languages)

Language	Code	Female voices	Male voices
Arabic	`ar`	`layla`	`adam`
Chinese (Mandarin)	`zh`	`hazel`, `vivian`	`dylan`, `silas`, `eli`
Indonesian	`id`	`nora`	`bryce`, `miles`, `cole`
Japanese	`ja`	`aria`, `mila`, `daisy`	`jasper`
Korean	`ko`	`june`	—
Malay	`ms`	`sasha`	`roman`
Turkish	`tr`	—	`beau`, `wes`
Vietnamese	`vi`	—	`kai`

European languages (61 voices — 10 languages)

Language	Code	Female voices	Male voices
German	`de`	`hanna`, `lea`, `petra`	`max`, `ben`, `markus`, `finn`
Spanish	`es`	`martina`, `ines`, `paula`	`sebastian`, `mateo`, `gabriel`
French	`fr`	`manon`, `juliette`, `lucie`, `elise`, `amelie`	`louis`, `nicolas`, `maxime`, `raphael`
Italian	`it`	`silvia`, `concetta`, `arianna`	`davide`, `luca`, `leonardo`
Portuguese (Brazilian)	`pt`	`juliana`, `leticia`	`gustavo`, `thiago`, `bruno`
Portuguese (European)	`pt`	`catarina`	`francisco`
Russian	`ru`	`anastasia`, `ekaterina`, `olga`, `irina`	`andrei`, `nikolai`, `maksim`
Greek	`el`	`katerina`, `dimitra`, `athina`	`dimitris`, `vasilis`
Finnish	`fi`	`aino`, `helmi`, `venla`	`mika`, `timo`, `matti`
Norwegian	`no`	`solveig`, `marit`	`kristian`, `espen`
Polish	`pl`	`ewa`, `joanna`	`tomasz`, `jakub`

See the Pro model card voice catalog for ranking notes.

Lightning v3.1 — standard pool

217 voices total across 12 languages — English (176), Hindi (115), Tamil (13), Spanish (11), Kannada (10), Marathi (9), Telugu (8), Odia (8), Punjabi (8), Malayalam (6), Gujarati (5), Bengali (4). Voices below are the curated short-list; the v3.1 model card has the full catalog.

English (American) — 20 voices

Male: jordan, robert, johnny, lucas, magnus, ronald, blofeld, zorin, felix, malcolm

Female: lauren, hannah, vanessa, brooke, olivia, rachel, nicole, elizabeth, ilsa, christine

English (other accents) — 3 voices

Voice ID	Gender	Accent
`william`	Male	Canadian
`erica`	Female	Canadian
`chloe`	Female	Australian

Indic (Hindi + Indian-English) — 21 voices

Female: sunidhi, chinmayi, aanya, siya, anuja, avni, ishani, yuvika, advika, sana, sameera, srishti, sakshi, maya

Male: wasim, rehan, parth, atharv, vivaan, devansh, aarush

Tamil — 2 voices

Voice ID	Gender
`jeevan`	Male
`rajeshwari`	Female

Telugu — 2 voices

Voice ID	Gender
`srihari`	Male
`padmaja`	Female

Kannada — 2 voices

Voice ID	Gender
`pranav`	Male
`deepashri`	Female

Malayalam — 2 voices

Voice ID	Gender
`vaisakh`	Male
`shibi`	Female

Marathi — 2 voices

Voice ID	Gender
`nilesh`	Male
`rupali`	Female

Gujarati — 2 voices

Voice ID	Gender
`dhruvit`	Male
`niharika`	Female

Spanish — 7 voices

Voice ID	Gender
`marcos`	Male
`david`	Male
`miguel`	Male
`daniella`	Female
`camilla`	Female
`alba`	Female
`nerea`	Female

Fetch the full catalog programmatically

For filtering by language / accent / gender / use case across the full 217 voices, query the live catalog. The response includes both standard Lightning v3.1 voices and Pro voices, distinguished by their tags.

$ curl "https://api.smallest.ai/waves/v1/lightning-v3.1/get_voices" \
>   -H "Authorization: Bearer $SMALLEST_API_KEY"

Voice object shape

Each entry in the voices array has:

Field	Type	Description
`voiceId`	string	Use this with the `voice_id` body field in synthesis requests.
`displayName`	string	Human-readable name.
`tags.language`	string[]	Languages the voice was trained on (e.g., `["english"]`, `["english", "hindi"]`).
`tags.accent`	string	One of `american`, `british`, `indian`, `canadian`, `australian`.
`tags.gender`	string	`male` or `female`.
`tags.age`	string	`young`, `middle-aged`, `senior`.
`tags.usecases`	string[]	Recommended use cases (e.g., `["conversational"]`, `["narration"]`).

Supported languages

Language	Code	v3.1 voices	v3.1 Pro voices
English (US, UK, Indian)	`en`	176	43
Hindi	`hi`	115	13 (Indian voices)
Tamil	`ta`	13	12
Spanish	`es`	11	6
Kannada	`kn`	10	10
Marathi	`mr`	9	6
Telugu	`te`	8	8
Odia	`or`	8	8
Punjabi	`pa`	8	7
Malayalam	`ml`	6	6
Gujarati	`gu`	5	5
Bengali	`bn`	4	5
German	`de`	—	7
French	`fr`	—	9
Italian	`it`	—	6
Portuguese (Brazilian + European)	`pt`	—	7
Russian	`ru`	—	7
Greek	`el`	—	5
Finnish	`fi`	—	6
Norwegian	`no`	—	4
Polish	`pl`	—	4
Arabic	`ar`	—	2
Chinese (Mandarin)	`zh`	—	5
Indonesian	`id`	—	4
Japanese	`ja`	—	4
Korean	`ko`	—	1
Malay	`ms`	—	2
Turkish	`tr`	—	2
Vietnamese	`vi`	—	1

For per-language voice counts that always reflect the live catalog, query GET /waves/v1/lightning-v3.1/get_voices and group by tags.language. For the canonical per-voice metadata, see the Lightning v3.1 model card voice catalog and Lightning v3.1 Pro voice catalog.

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