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Inworld STT-1

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Inworld STT-1 is a closed-weights speech-to-text model from Inworld. Licence: proprietary.

Catalogue identity notes

Inworld's speech-to-text model, API modelId inworld/inworld-stt-1 (Inworld STT overview: 'Use synchronous transcription for complete audio files, and bidirectional WebSocket streaming for live audio. Both run the inworld/inworld-stt-1 model.'; 30 languages, Voice Profile signals). verli ran exactly modelId 'inworld/inworld-stt-1' in July 2026. First-party release month not found, so released is left out. Closed weights.

62.0±5.5#20 of 162 speech-to-text modelsfrom 2 benchmark results across 1 source* thinly tested, treat the rank as provisional

Score within the Open ASR English short-form WER (March 2026) comparison set only.

$ how it compares

The speech-to-text models ranked either side of Inworld STT-1, out of 176 with a score.

#modelscorewhereRAMreleased
21MAI-Transcribe-1.5 Microsoft AI62±8api $0.0060/audio min2026-06
22Fish Audio Transcribe 1 Fish Audio62±5api $0.0060/audio min
23Inworld STT-1 Inworld62±6api $0.0025/audio min
24Qwen-Audio-3.0-ASR Alibaba62±4comparison only2026-09
25Cohere Transcribe (03-2026) Cohere62±2api $0.0042/audio min +local~5.5GB2026-03

see all speech-to-text models · find the ones that fit your machine

$ what it's good at

other tests2 not in a task · 88% of its score
testresultvs the others in its rundifficultycountswhy
verli STT benchmark · LibriSpeech test-clean WER1.7% ✎▃·····▃▅█▃▅▅ beats 9/11avg 3.4%▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 62%typical
verli STT benchmark · Earnings-22 WER (2,741 utt.)10.3% ✎▃·▃▅··▃▃▅▅█▃ beats 11/13avg 16%▇▇▇▇▇▇▇▇▇▇▇ 27%blunt

$ where to run it

Through an API

api · $0.0025/audio min · docs.inworld.ai ↗ · price sourceUSD per input audio minute: Inworld's pricing page lists 'STT 1 $0.15/hr' on the On-Demand plan (÷60); paid plans list $0.10/hr after plan discounts. Product: Inworld Speech-to-Text API (sync /stt/v1/transcribe and WebSocket streaming). API model: inworld/inworld-stt-1. Settings: On-Demand plan. Price basis: published list rate. Exclusions: monthly plan fees and plan discounts. Currency: USD. Inworld official pricing page, observed 2026-10-09.

$ how the score was worked out · verliapp/stt-benchmark · inde… 88%

Each result implies a score on its own, after adjusting for how hard its test is and who ran it. The score is their weighted average, with a small pull toward the middle for thinly tested models. Each test's weight is its counts column above; here it's added up by who ran the tests. How it works

sourceresultsshare of the scorelicence
verliapp/stt-benchmark · independent STT accuracy benchmark2▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 88%MIT
prior · pull toward the middle▇▇▇▇ 12%
weighted average= 62.0

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data updated · sources and licences · json