Grok 4.20
x-ai/grok-4.20Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
$1.25Input, per million tokens
$2.50Output, per million tokens
2MContext window
1.8MLongest answer
2M tokens of context — about 1,500,000 words, on a scale that ends at 2M.
What it can do
- Reasoning
- Vision
- Tool use
- Takes text
- Takes image
- Takes file
- Gives text
Released 31 Mar 2026 · checked 3 Oct 2026.