xai-grok-43-release-2026

fields

statementREQ	xAI will release Grok 4.3 with always-on reasoning, 1M-token context window, and integrated agentic tools (web search, code execution, file search), plus a Custom Voices API for voice cloning, available via the xAI API.	docs.x.ai	2026-05-05
actorREQ	xAI	docs.x.ai	2026-05-05
topic	model release / voice API	docs.x.ai	2026-05-05
promised_at	2026-04-30	docs.x.ai	2026-05-05
target_date	2026-04-30	docs.x.ai	2026-05-05
shipped	true	docs.x.ai	2026-05-05
shipped_at	2026-04-30	docs.x.ai	2026-05-05
evidence_url	https://docs.x.ai/developers/models/grok-4.3	docs.x.ai	2026-05-05

history · 8 fields · 8 revisions

statement1 revision

xAI will release Grok 4.3 with always-on reasoning, 1M-token context window, and integrated agentic tools (web search, code execution, file search), plus a Custom Voices API for voice cloning, available via the xAI API. current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

actor1 revision

xAI current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

topic1 revision

model release / voice API current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

promised_at1 revision

2026-04-30 current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

target_date1 revision

2026-04-30 current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

shipped1 revision

true current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

shipped_at1 revision

2026-04-30 current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.

evidence_url1 revision

https://docs.x.ai/developers/models/grok-4.3 current docs.x.ai · 2026-05-05

Grok 4.3 is xAI's most intelligent and fastest model, featuring always-on reasoning, a 1M-token context window, and integrated agentic tools. Custom Voices voice-cloning API also launched alongside.