CHiME-6

by CHiME Challenge organizers

Real-world dinner-party recordings — far-field ASR + diarization in noise.

TL;DR

Real-world dinner-party recordings — far-field ASR + diarization in noise.

Best for far-field, overlapping-speech ASR + diarization under realistic noise. Pricing: research-only.

Category
Open source
License
—
Stars
—
Last push
—
Pricing
research-only
Platforms
Web

What it is

CHiME-6 records 4-person dinner parties with distant microphone arrays — the canonical real-world noisy-far-field meeting benchmark. Successor: CHiME-7/8 DASR. Research-only license.

Best for: Far-field, overlapping-speech ASR + diarization under realistic noise.
Watch out for: Custom CHiME license · research-only · ~50h of 4-speaker home recordings · Track-1 (oracle diarization) vs Track-2 (unknown diarization). Cite: Watanabe et al., CHiME 2020.

Install / use

https://chimechallenge.github.io/chime6/  # registration

Features

Speaker diarizationYes
Word-level timestampsNo
Streaming / real-timeNo
Languages supported1
HIPAA eligibleNo

CHiME-6 vs Whipscribe

FeatureCHiME-6Whipscribe
CategoryOpen sourceTranscription APIs
Pricingresearch-onlyfree beta
Speaker diarizationYesYes
Word timestampsNoYes
StreamingNoNo
Languages199
PlatformsWebWeb, API, MCP

Alternatives to CHiME-6

OpenAI Whisper
OpenAI

The reference open-source multilingual ASR model from OpenAI.

OSS · MIT ★ 98.1k
whisper.cpp
Georgi Gerganov

C/C++ port of Whisper — runs on anything, from a Raspberry Pi to Apple Silicon.

OSS · MIT ★ 48.8k
faster-whisper
SYSTRAN

4× faster than reference Whisper using CTranslate2 — production sweet spot.

OSS · MIT ★ 22.3k

Whipscribe is a managed faster-whisper + whisperX service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.