xAI: Grok 4.20

Public pricingIntelligence 79/100Huge memoryVisionDeep thinkingTool use

xAI: Grok 4.20 is a multimodal model for agent workflows and tool use. It combines multimodal input handling and reliable tool use and agent behavior with a 1M+ tokens context window and a balanced-cost profile. Use it for agent workflows, tool use, and orchestration when accuracy, context, and control matters.

Input

$2.00/1M

Output

$6.00/1M

Cached

$0.20/1M

Batch

$1.00/1M

Calculate your Grok 4.20 bill.

Set your workload — see cost at your exact volume.

What would Grok 4.20 cost you?

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1,00010,00050,000250,0001M10M

Technical specifications

Grok 4.20 at a glance.

Memory

2,000,000

tokens

Max reply

65,536

tokens

Memory tier

Huge

multiple books or whole repositories

Tokenizer

grok

Released

Mar 2026

Training cutoff

Sep 2025

Availability

Public pricing

Status

active

Benchmarks

Quality benchmarks

Independent evaluations from public leaderboards. Higher is better.

  • aa_intelligence_index

    48

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick Grok 4.20

  • Multi-step reasoning, research agents, or hard math.
  • Screenshot analysis, image understanding, or document OCR.
  • Agentic workflows that call tools or APIs.
  • Long documents, full codebases, or extensive chat histories.

When to look elsewhere

  • Very latency-sensitive, real-time apps where every millisecond counts.

Alternatives

Similar models to compare.

FAQ

Grok 4.20 — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, Grok 4.20 costs roughly $390 per month. Input is $2.00 /1M tokens and output is $6.00 /1M tokens.
Grok 4.20 has a 2,000,000-token context window (huge memory — multiple books or whole repositories). That means you can fit about 375,000 words of input and history in a single call.
Beyond text generation, Grok 4.20 supports understanding images, deep step-by-step reasoning, calling functions / tools, strict JSON output. It streams replies by default.
Grok 4.20 was released in March 2026, with training data cut off around September 2025.
Models in a similar class include Grok 4.20 Multi-Agent, Grok 4, Grok 4 Fast. The "Similar models" section below this FAQ links into each.

Still unsure?

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