Grok 4 Fast

Grok 4 Fast is xAI's budget / large-context tier — a 2M-token window at ~1/15th flagship price, the sensible default for most chat, RAG and agent workloads.

Best for

• High-volume, latency-sensitive chatbot, RAG and agent work
• The largest context in the Grok line (2M tokens)
• Cost-optimised default when flagship reasoning isn't required

How it compares — and the India angle

• At ~$0.20/$0.50 it competes with budget GPT/Gemini Flash tiers for Indian high-throughput apps.
• Choose this over Grok 4.3 unless you specifically need top-end reasoning.
• Closed-weight; choose open Llama if you need on-prem control.