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Speech-to-text model

Qwen3 ASR Flash API

Alibaba Qwen speech-to-text, strong on Chinese, its dialects and English, for dictation.

Qwen3 ASR Flash is a speech-to-text model from Qwen, available on OttoPort's OpenAI-compatible API as the model ID qwen3-asr-flash at $0.0000425 / second as of 2026-10-14.

Provider

Qwen

Price

$0.0000425 / second

Model ID

qwen3-asr-flash

Type

speech-to-text model

DictationVoice inputMeeting notes
Pricing

Qwen3 ASR Flash API pricing

What OttoPort bills for Qwen3 ASR Flash, and what that works out to per unit. Rates are read from the same catalog the gateway meters against, and were current on 2026-10-14.

Per second$0.0000425
5-second clip$0.000213
8-second clip$0.00034
Seconds per $10235,294of generated video

No subscription and no minimum — OttoPort bills prepaid credits against usage. See the full rate card.

Quickstart

Call Qwen3 ASR Flash in three lines

Send "model": "qwen3-asr-flash" to POST https://ottoport.ai/api/v1/audio/transcriptions with an OttoPort key. No Qwen account, no waitlist, no separate SDK.

curl https://ottoport.ai/api/v1/audio/transcriptions \
  -H "Authorization: Bearer $OTTOPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d "{
    \"model\": \"qwen3-asr-flash\",
    \"audio\": \"$(base64 < note.m4a | tr -d '\n')\",
    \"format\": \"m4a\",
    \"duration\": 12
  }"

Before you start

  1. 1. Create a key at /api-keys.
  2. 2. Top up credits — the smallest pack is $25.
  3. 3. Paste the request. It returns on the same request.

Full reference at /docs, or drive it from an agent with the MCP server and CLI.

Reference

Request parameters

The body POST https://ottoport.ai/api/v1/audio/transcriptions accepts for Qwen3 ASR Flash.

FieldTypeRequiredNotes
modelstringYesAlways qwen3-asr-flash for Qwen3 ASR Flash.
audiostringYesThe recording, base64 or a base64 `data:` URL. Up to 25 MB decoded.
formatstringYeswebm, m4a, mp4, mp3, wav or ogg. Read from a `data:` URL's type when omitted.
durationnumberYesThe recording's length in seconds, up to 600. Rounded up to a whole second, it is the billed unit.
languagestringNoISO 639-1 code of the spoken language, e.g. `en` or `zh`.
promptstringNoNames, jargon or preceding text, to steer spelling and style.
Comparison

Qwen3 ASR Flash direct vs through OttoPort

Qwen3 ASR Flash is the same model either way — what changes is how many accounts, keys, and integrations you carry to reach it.

Qwen directVia OttoPort
Accounts and keysA Qwen account, plus one more for every other model you addOne OttoPort account and one key for the whole catalog
Request shapeQwen's own SDK and response formatOpenAI-compatible — point baseURL at OttoPort and change the model string
Switching modelsA new integration per providerReplace qwen3-asr-flash with any other model ID in the catalog
BillingA separate invoice and contract per providerPrepaid credits, no subscription, one usage ledger
Provider outagesYour call failsConfigured backup routes are tried in order on provider failure
01

Send the recording's length as `duration`.

02

Name the language when you know it.

03

Put names and jargon in `prompt`.

FAQ

Qwen3 ASR Flash API questions

Cost, keys, and model IDs for Qwen3 ASR Flash on OttoPort.

How much does the Qwen3 ASR Flash API cost?

On OttoPort, Qwen3 ASR Flash costs $0.0000425 / second as of 2026-10-14. For scale, 5-second clip: $0.000213. Billing is prepaid usage with no subscription and no minimum, and the current rate is always published at ottoport.ai/pricing.

How do I get a Qwen3 ASR Flash API key?

You do not need a Qwen key. Create an OttoPort account, generate a key at ottoport.ai/api-keys, and send it as "Authorization: Bearer <key>" to POST https://ottoport.ai/api/v1/audio/transcriptions with "model": "qwen3-asr-flash". The same key reaches every other model in the catalog.

What is the model ID for Qwen3 ASR Flash?

The OttoPort model ID for Qwen3 ASR Flash is qwen3-asr-flash. Pass it as the model field on POST https://ottoport.ai/api/v1/audio/transcriptions, or list it programmatically from GET https://ottoport.ai/api/v1/models.

Do I need a Qwen account to use Qwen3 ASR Flash?

No. OttoPort connects to Qwen on your behalf, so one OttoPort account covers Qwen3 ASR Flash and every other model in the catalog — no per-provider contracts, keys, or invoices.

Alternatives

Other speech-to-text models on the same API

Same endpoint, same key — swapping model is a one-string change from qwen3-asr-flash.

Browse the full catalog — every model with its provider and per-unit price.