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Grok 4.20: price, context, what it takes

Grok 4.20 from xAI, as OpenRouter's public list names it: x-ai/grok-4.20. Read 2026-11-06.

Prices are OpenRouter's, in US dollars. For most models that is the vendor's own list price; a vendor selling direct can differ.

The modelx-ai/grok-4.20
  • Input, per 1M tokens$1.25
  • Output, per 1M tokens$2.50
  • Cached input, per 1M tokens$0.200
  • Context window2,000,000 tokens
  • Longest answer1,800,000 tokens
  • Takestext, images, files
  • Givestext
  • Acceptsreasoning, JSON schema, tools
  • Released2026-03-31
  • In the list since2026-10-28
Price over time

One price since 2026-10-28, read 1 times.

Other xAI models
ModelInput, 1MOutput, 1MContext
Grok 4.20 Multi-Agent$1.25$2.502M
Grok 4.3$1.25$2.501M
Grok 4.5$2.00$6.00500K
Grok 4.6$2.00$6.00500K
Grok 4.7$2.00$6.00500K
Grok Build 0.1$1.00$2.00256K

All modelsJSON