Grok 4.3

Grok 4.3 is not currently in the Allocate serving catalog, so we do not list prices for it: every price on this site comes from the live catalog. The models below are its closest served alternatives, with real list prices.

xAI’s fast reasoner with live knowledge. Strong on current-events grounding and quick reasoning turns.

Where this class of model fits

• Freshness-sensitive answers
• Fast reasoning turns
• Research assistants

Closest served alternatives

Frontier

GPT-5.5

OpenAI · 400K context · Proprietary API

$5 in · $30 out / MtokDetails →

Frontier

Gemini 3.1 Pro

Google · 1M context · Proprietary API

$2 in · $12 out / MtokDetails →

Frontier

Claude Sonnet 5

Anthropic · 1M context · Proprietary API

$3 in · $15 out / MtokDetails →