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Grok 4.20 Beta

by xAI · Released Mar 2026

Multimodal2M ContextPreview
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Context
2.0M tokens (~1,000 books)
Input $/1M
$2.00
Output $/1M
$6.00
Type
multimodal
License
Proprietary
Benchmarks
0 tested
Data as of
About

Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. Learn more in our docs

No benchmark data available yet.

Links
Documentation
Community
BenchGecko API
grok-4-20-beta
Specifications
  • Typemultimodal
  • Context2.0M tokens (~1,000 books)
  • ReleasedMar 2026
  • LicenseProprietary
  • Statuspreview
  • Cost / Message~$0.010
Available On
xAI logoxAI$2.00
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Grok 4.20 Beta is a proprietary multimodal AI model by xAI, released in March 2026. Context window: 2M tokens.

Key facts · as of 2026-10-05

  • Grok 4.20 Beta by xAI. Not enough public benchmark scores to rank yet.
  • List price $2.00 input · $6.00 output per 1M tokens (as of 2026-10-05).
  • Sold by 4 providers (as of 2026-10-05): xAI $1.25 in / $2.50 out · xAI $1.25 in / $2.50 out · xAI $2.50 in / $5.00 out · xAI $2.50 in / $5.00 out. Every provider

How to cite · data as of 2026-10-05

Grok 4.20 Beta · benchmarks, pricing and providers. BenchGecko, data as of 2026-10-05. https://benchgecko.ai/model/grok-4-20-beta

Credit "Source: BenchGecko" with a link. Prices per provider and Gecko Tests are BenchGecko data (CC BY 4.0); benchmark scores keep their original source, listed in the JSON. JSON · llms.txt · MCP