Grok 4.3 — reviews, specs & pricing

Cheaper long-context Grok with a 1M-token window. $1.25/$2.50 per 1M tokens under 200k prompt tokens.

Summary

Grok 4.3 by xAI is a highly efficient conversational model designed to handle massive datasets with its expansive 1-million-token context window. It offers a highly competitive pricing structure, particularly for prompts under 200k tokens, making deep-text analysis far more accessible. This model combines xAI's signature real-time information access with the capacity to process entire libraries of information in a single query.

Sample use case

A financial research firm uses Grok 4.3 to upload decades of annual reports, earnings call transcripts, and market regulations for a specific industry all at once. The model quickly synthesizes the historical data, identifies long-term market trends, and drafts a comprehensive investment thesis, saving analysts days of manual cross-referencing and document chunking.

Specifications

• Provider: xai
• License: closed
• Context: 1000k tokens
• Input price: $1.25/M tok
• Output price: $2.5/M tok

Pros

• Massive 1M-token context window
• Highly competitive and budget-friendly pricing
• Excellent for long-document comprehension
• Real-time information retrieval capabilities

Cons

• Restricted to text-only chat modalities
• Pricing increases for prompts exceeding 200k tokens
• Potential latency spikes when processing maximum context

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