Grok 4.3

xAI

8.8/10

Provisional 0 practitioner reviews

Data source: This is a provisional model-fit score based on public benchmark signals, provider pricing/context data, and manual curation. It is not yet backed by approved practitioner reviews.

Context window

1,000,000 tokens

Input tokens per dollar

640,000

Output tokens per dollar

160,000

Dimension Breakdown

Tool Calling 9/10

Reliability of function/tool calling — correct schema adherence and parameter extraction

Cost Efficiency 10/10

Price per token relative to output quality for agent tasks

Latency 9/10

Response time — time to first token and total generation time under load

API Reliability 8/10

Uptime, rate limit headroom, and error rates in production

Context Quality 9/10

Long-context coherence and instruction following over turns

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Top Use Cases

Coding RAG General

Summary

xAI's flagship model with 53/60 on Artificial Analysis Intelligence Index. Best-in-class speed (71 tokens/s) at just $1.56/1M tokens.

Sources

xAI models and pricing provider-docs
xAI models and pricing pricing
Artificial Analysis leaderboard benchmark

Practitioner Reviews

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Last updated: May 8, 2026