Skip to content

Grok 4.20 Beta vs Gemini 3.1 Pro

Comprehensive comparison between xAI's Grok 4.20 Beta and Google's Gemini 3.1 Pro. Compare pricing, performance, features, and user reviews.

grok 4.20 vs geminigrok beta vs geminixai vs google

Grok 4.20 Beta

xAI

Grok 4.20 Beta introduces a revolutionary 4-agent collaboration system (Grok, Harper, Benjamin, Lucas) that debates responses internally before surfacing answers. Features rapid learning architecture, 2M context window, and significantly reduced hallucinations. Optimized for speed and cost efficiency.

$0.25/$0.6per M tokens
Details

Gemini 3.1 Pro

Google

Google's most advanced Pro-tier model with 1M context, dynamic thinking, and the highest ARC-AGI-2 score (77.1%) among all models. Excels at multimodal reasoning across text, images, audio, and video. Best price-to-performance ratio among frontier models.

$2/$12per M tokens
Details

Specs Comparison

SpecificationGrok 4.20 BetaGemini 3.1 Pro
Context Window2000K1000K
Max Output131K66K
Input (per 1M tokens)$0.25$2.00
Output (per 1M tokens)$0.60$12.00
Reasoning
Open Source

Scenario Score Comparison

Coding
—
vs
85
Writing
—
vs
86

Grok 4.20 Beta

Pros

  • + 4-agent collaboration for better answers
  • + 2M context - industry leading
  • + Significantly reduced hallucinations
  • + Fast inference with rapid learning architecture
  • + Real-time X/Twitter access

Cons

  • − Beta version - may have stability issues
  • − X ecosystem dependency
  • − Benchmark data still pending
  • − Smaller developer ecosystem vs OpenAI/Anthropic
  • − 4.20 version number may be a marketing gimmick

Gemini 3.1 Pro

Pros

  • + Cheapest frontier model ($2/$12)
  • + Highest ARC-AGI-2 score (77.1%)
  • + Native multimodal (text/image/audio/video)
  • + 1M context window
  • + Free tier via AI Studio
  • + Best for frontend/web design

Cons

  • − Weaker at agentic tasks
  • − Context window issues reported
  • − Sometimes skips lines in code edits
  • − CLI/agent harness quality inconsistent

Recommendation

Choose Grok 4.20 Beta if you:

  • • Need 4-agent collaboration for better answers
  • • Need 2m context - industry leading
  • • Need significantly reduced hallucinations

Choose Gemini 3.1 Pro if you:

  • • Need cheapest frontier model ($2/$12)
  • • Need highest arc-agi-2 score (77.1%)
  • • Need native multimodal (text/image/audio/video)

Based on scores across 2 scenarios, Gemini 3.1 Pro performs better overall.

Grok 4.20 Beta Details Gemini 3.1 Pro Details

Get Started with Grok 4.20 Beta

1Visit the provider's website
2Create an account
3Start using the model

Get Started with Gemini 3.1 Pro

1Visit gemini.google.com
2Sign in with Google account
3Upgrade to Advanced ($20/mo) for Pro

💡 Gemini Advanced is included in Google One AI Premium.

Want to compare other models?

Custom Comparison