Specification

Family: Grok
Source:xAI — docsT1observed 4 h agohigh
Modalities: audio, text
Source:xAI — docsT1observed 4 h agohigh
Input modalities: text, audio
Source:xAI — docsT1observed 4 h agohigh
Output modalities: text, audio
Source:xAI — docsT1observed 4 h agohigh
API model id: grok-voice-think-fast-2.0
Source:xAI — docsT1observed 4 h agohigh
Official page: docs.x.ai/developers/models/grok-voice-think-fast-2.0
Source:xAI — docsT1observed 4 h agohigh
Regions: eu-west-1, us-east-1, us-saltlake-2
Source:xAI — docsT1observed 4 h agohigh

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

8

Source tiers

T18

Freshest observation

4 h ago

Conflicts

None

Modalities

Modalities: audiotext
Input: textaudio
Output: textaudio

Capabilities

Tool calling
Unavailable
Structured output
Unavailable
Reasoning
Unavailable
Vision
No
xAI — docs · T1
Audio
Unavailable
Fine-tuning available
Unavailable

No structured attributes yet.

No benchmark results recorded

Results appear when a tier 1–3 source publishes them; we never copy scores without a source.

Current prices

No current prices recorded

Prices appear when a provider publishes a public pricing page we crawl.

Price history

No hardware estimate available

Estimates need a parameter count; this model has none recorded from a source.

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history · Regions

1 claims · 1 propertiesShow all properties

Regionsregions1

Claim history for Regions
Value	Valid from → to	Status	Source	Confidence	Extractor
eu-west-1, us-east-1, us-saltlake-2	11 Sept 2026 22:37 UTC → current	current	xAI — docsT1	high	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

11 Sept 2026
New modelModelGrok Voice Think Fast 2.0xAI
New model: Grok Voice Think Fast 2.0 (xAI)
xai
docs.x.ai

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
xAI — docs	docs.x.ai/developers/models	model_docs	T1· Official	2 h ago	3

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.