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xAI

Grok 4.3 Beta

Frontier

xAI•Released on 2026-04-17

xAI's latest beta flagship released April 17, 2026. Retains the 16-agent Heavy system and 2M-token context from Grok 4.20, adding native video input, downloadable office output (PDF/spreadsheet/PowerPoint), and tighter Grok Computer integration. Full rollout estimated mid-to-late May.

81
Overall Score

Core Specs

2000K
Context Window
0K
Max Output
✓
Reasoning
✗
Open Source
Multimodal Support
textimagevideo

Scenario Scores

Coding
#36 / 5382
Writing
#26 / 5382
Translation
#47 / 5376
Data Analysis
#31 / 5381
Conversation
#15 / 5386
Image Gen
#6 / 778

User Feedback Highlights

Based on community feedback. Hover to see original reviews.

− $300/month is the priciest tier on the market− API pricing not yet published− Still beta — full rollout not until May+ Retains 2M context + 16-agent Heavy system+ Generates formatted PDF/spreadsheet/PowerPoint+ Deeper Grok Computer integration+ Native video input (new in 4.3)+ Standalone STT/TTS APIs launched alongside
Sentiment:👍 65%😐 25%👎 10%

Pros & Cons

Pros

  • +Native video input (new in 4.3)
  • +Generates formatted PDF/spreadsheet/PowerPoint
  • +Retains 2M context + 16-agent Heavy system
  • +Deeper Grok Computer integration
  • +Standalone STT/TTS APIs launched alongside

Cons

  • −$300/month is the priciest tier on the market
  • −Still beta — full rollout not until May
  • −API pricing not yet published

Reliability

Incidents (30d)0
View Status Page →

Pricing

Input (per 1M tokens)$0.00
Output (per 1M tokens)$0.00
Subscription$300/month
Updated on 2026-04-21

Get Started

1Visit the provider's website
2Create an account
3Start using the model

Compare with Others

Grok 4.3 Beta vs Claude Opus 4.7 →Grok 4.3 Beta vs Claude Opus 4.6 →Grok 4.3 Beta vs Claude Opus 4.5 →

Benchmarks

noteFull benchmark suite pending independent verification.%