Grok 4.3 — AI Model Review & Pricing
xAI's latest flagship model featuring a massive 1M token context window. Strong reasoning capabilities with multimodal input support at competitive pricing for the flagship tier.
Specifications
| Attribute | Value |
|---|---|
| Lab | xAI |
| Tags | Intelligent Reasoning |
| Release Date | 2026-05 |
| Context Window | 1,000,000 tokens |
| Input Price / 1M | $1.25 |
| Output Price / 1M | $2.50 |
| Input Modalities | Text |
| Output Modalities | Text |
Strengths
- Massive 1M token context window
- Strong reasoning capabilities
- Competitive pricing for flagship tier
- Multimodal input (text and images)
- Fast inference with high throughput
Weaknesses
- Below absolute top-tier flagships in general intelligence
- Limited third-party ecosystem and integrations
- Alignment can produce inconsistent refusals
Best For
- Long-document analysis and summarization
- Research requiring large context windows
- Cost-effective general-purpose tasks
- Multimodal reasoning workflows
In Depth: Grok 4.3
Summary
Grok 4.3 is an AI model from xAI ranked #37 of 125 on the LMRank leaderboard.
Released 2026-05. It currently appears in the Overall category on LMRank and 1 other category. It supports Text input and produces Text output, with a context window of 1,000,000 tokens. Input pricing is $1.25 per 1M tokens and output is $2.50 per 1M tokens on OpenRouter.