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XAI / SPACEXAI · MODEL RELEASE TRACKER

Grok Voice Transcribe 1.0

Grok Voice Transcribe 1.0 is the predecessor to Grok Voice Transcribe 2.0, a speech-to-text model from xAI (SpaceXAI). The provider states Grok Voice Transcribe 2.0 is "twice as accurate" as 1.0; on the provider's short-phrase test the word-error rate reportedly dropped from 20.6% (1.0) to 6.8% (2.0). The release notes also state 1.0 is offered at the same price as 2.0.

CURRENT SNAPSHOT2/5 DIMENSIONS WITH DATA

The dimensions that change the decision.

PRICING
PricingReported to be offered at the same price as Grok Voice Transcribe 2.0.
CONTEXT WINDOW

Not established from the available sources.

MODALITIES

Not established from the available sources.

BENCHMARKS
Word error rate on short-phrase setReported at 20.6% on the provider's short-phrase test (the provider reports 2.0 reduced this to 6.8%).
Accuracy relative to Grok Voice Transcribe 2.0The publisher states Grok Voice Transcribe 2.0 is "twice as accurate" as Grok Voice Transcribe 1.0.
AVAILABILITY

Not established from the available sources.

RELEASE TIMELINE

Published, source-backed release events only.

1 SOURCES · IMPORTANCE 7.0

SpaceXAI releases Grok Voice Transcribe 2.0 speech-to-text model

SpaceXAI announced Grok Voice Transcribe 2.0, an updated speech-to-text model built on the Grok Voice audio foundation. The company says it is twice as accurate as Grok Voice Transcribe 1.0 in real-world tests, ranks first on the Artificial Analysis streaming leaderboard, supports dozens of languages with automatic detection and speaker diarization, and keeps the same pricing and API compatibility as 1.0 while the older version is phased out.

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VERIFIABLE FACTS

Every value stays attached to a source and date.

LIMITATIONS · Multilingual accuracy (limitation)DEVELOPER CLAIM

The provider indicates multilingual accuracy was a major area of improvement in 2.0 versus 1.0, implying 1.0 had lower multilingual accuracy.

WHAT CHANGED

Stored passport versions, without reconstructed history.

Passport created4 facts