Grok Voice Transcribe 1.0
The first Grok Voice Transcribe API model, now being replaced by 2.0.
FAMILY / SPACEXAI
Grok
SpaceXAI’s frontier family emphasizing live tools, reasoning, coding, and long-running tasks.
- First model
- 2023
- Models
- 16
- Latest dated version
- Grok Voice 3.0
01 / RELEASE SEQUENCE
Family release sequence
- First date unverifiedGrok Voice Transcribe 1.0Language
- 2023-11-03Grok-1Language
- 2024-03-17Grok-1 BaseLanguage
- 2024-03-28Grok-1.5Language · Coding
- 2024-04-12Grok-1.5VLanguage · Multimodal
- 2024-08-13Grok-2Language · Reasoning
- 2025-02-19Grok 3Language · Reasoning
- 2025-07-09Grok 4Reasoning · Coding
- 2025-09-19Grok 4 FastReasoning · Agent
- 2025-11-17Grok 4.1Language · Reasoning
- 2025-11-19Grok 4.1 FastReasoning · Agent
- 2026-07-16Grok 4.5Reasoning · Coding
- 2026-08-12Grok 4.6Reasoning · Coding
- 2026-09-17Grok Voice Transcribe 2.0Language
- 2026-09-21Grok 4.7Language · Reasoning
- 2026-10-14Grok Voice 3.0Language · Multimodal
02 / GENERATIONS
What changed
Grok-1
The model behind the original limited Grok beta. The later open release contains base weights without dialogue fine-tuning and is listed separately.
Grok-1 Base
Grok-1’s raw pretrained base weights: a 314B MoE with roughly 25% active per token, not the Grok chat model.
Grok-1.5
Expanded context to 128K and improved mathematics and coding, announced ahead of access for early testers.
Grok-1.5V
The preview announcement of Grok’s first vision model, extending understanding to images, charts, and documents.
Grok-2
Launched in beta on X with improved chat, coding, and reasoning; product image generation used the separate FLUX model.
Grok 3
Grok 3 combined live information retrieval, explicit reasoning, and a mass-market product entry in one model experience.
Grok 4
Scaled reinforcement learning beyond Grok 3 Reasoning with native tools, web search, and X search.
Grok 4 Fast
An efficient Grok 4 variant unifying reasoning and non-reasoning modes with 2M context and live search.
Grok 4.1
Used large-scale reinforcement learning to improve style, intent understanding, collaboration, and factuality in everyday conversation.
Grok 4.1 Fast
A 2M-context fast agent model for real-world tool use and deep research, offered in reasoning and non-reasoning variants.
Grok 4.5
A fast flagship for coding, agents, and knowledge work, available in Grok Build and the API.
Grok 4.6
Grok 4.6 reflects the migration of frontier-model evaluation from single-turn benchmarks toward multi-step project completion.
Grok Voice Transcribe 2.0
It turns the audio foundation behind Grok Voice into a dedicated transcription API and replaces the first-generation model without requiring integration changes.
Grok 4.7
Grok 4.7 advances beyond Grok 4.6 with a larger base model and longer reinforcement-learning run, becoming xAI’s current API and coding-agent line.
Grok Voice 3.0
Grok Voice 3.0 is a separately named voice-model version; its release moved the dynamic API alias `grok-voice-latest` to 3.0, establishing a verifiable real-time voice-model milestone.