XAI

Compare the 7 models in XAI — independently verified, re-verified on a rolling schedule, graded on capability, pricing and compliance.

What is in XAI

HokAI tracks 7 active tools in XAI. 1 of them (14%) publish a free tier you can test before paying.

XAI — Models

  • Grok 4 Fast — Grok 4 Fast is xAI's cost-optimized 2 million token context model, released September 19, 2025, scoring 35 on the Artificial Analysis Intelligence Index.
  • Grok 4.1 — Grok 4.1 by xAI (Nov 17, 2025): #1 on LMArena at 1483 Elo, hallucination rate cut from 12.09% to 4.22%, 256K context.
  • Grok 4.20 — Grok 4.20 by xAI (Feb 2026): 4-agent MoE architecture, 2M token context, 88.9% GPQA Diamond. Fastest frontier output at 265 tokens/sec.
  • Grok 4.3 — Grok 4.3 is xAI's April 2026 flagship reasoning model, posting 94.2 tokens per second output and a 1 million token context carried over from Grok 4.20.
  • Grok 4.5 — xAI's Grok 4.5 targets coding and agentic tool-calling workloads, built alongside Cursor and priced well under rival flagship models for high-volume agent loops.
  • Grok 4.6 — Grok 4.6 (Aug 2026) is xAI's 500K-context reasoning model, matching the top score on the Artificial Analysis Intelligence Index.
  • Grok Imagine Image 2.0 — xAI's second-gen image model, live in the Grok app since August 7, 2026, with region-precise editing and a #2 global Arena ranking.

Frequently asked questions

How many models are there in XAI?

HokAI currently lists 7 active entries in XAI. Each is verified against the vendor's own pages and re-checked as those pages change, so the count moves as the category does.

Which models are listed under XAI?

Grok 4 Fast, Grok 4.1, Grok 4.20, Grok 4.3 and Grok 4.5, among the 7 entries in this section. Each links through to a full profile covering what it does, how it is priced where that is published, and how it compares with the alternatives in the same category.

Are there free XAI options?

Yes — 1 of the 7 listings in XAI publish a free tier. Free tiers here usually cap usage volume or hold back the higher-end features rather than expiring, so they suit evaluation before committing.