xAI

Grok 4.20

xAI's flagship reasoning model with 4-agent architecture. 2M token context, #2 on ForecastBench. Excels at complex multi-step reasoning, real-time data access via X, and competitive coding benchmarks.

4.8/ 5.0
2000K context
Try Grok 4.20

Pricing

$30/month
Pro plan
API Pricing
Input$3/1M tokens
Output$15/1M tokens

Ratings

Overall
4.8
Coding
4.8
Writing
4.7
Reasoning
4.9
Speed
4.5
Value
4.5

Pros

  • 4-agent architecture for parallel reasoning
  • 2M token context window
  • #2 on ForecastBench
  • Real-time X/Twitter data access
  • Strong coding and math performance

Cons

  • SuperGrok subscription required ($30/mo)
  • Behind Claude Opus 4.6 on SWE-bench
  • Smaller developer ecosystem

Benchmark Results

ForecastBench
82.5%#2
SWE-bench Verified
72.1%#5

Best For

Complex reasoning, forecasting, real-time analysis, multi-agent workflows

Quick Info

Provider
xAI
Version
4.20
Released
Feb 2026
Context
2000K tokens

Features

Vision/Images
Audio
Video
PDF Processing
Code Generation
AI Agents

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Frequently Asked Questions

Is Grok 4.20 worth it in 2026?

With a rating of 4.8/5, Grok 4.20 is best for Complex reasoning, forecasting, real-time analysis, multi-agent workflows. At $30/mo, it's competitive for its feature set.

What are the best alternatives to Grok 4.20?

Top alternatives include OpenClaw, Claude Opus 4.5, Claude Sonnet 4.5, and GPT-5.1 Instant. Each has different strengths — use our comparison tool above to see detailed head-to-head matchups.

Does Grok 4.20 have a free plan?

Grok 4.20 does not currently offer a free plan. Plans start at $30/mo.