SpaceXAI: Grok 4.20
by xAItext+image+file->text4 endpoints
Overview
Grok 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...
Capabilities
Text generation
Image understanding
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Long context
File input
Top-P sampling
Deterministic seed
Log probabilities
Modalities
Input
TextImageFile
Output
Text
Technical Specifications
Context Window
2M tokens
Max Output
1.8M tokens
Knowledge Cutoff
2025-09-01
Tokenizer
Grok
Uptime (24h)
10000.0%
Supported Parameters
include_reasoninglogprobsmax_tokensreasoningresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_logprobstop_p
Pricing
Per 1M tokens
Input$1.25
Output$2.50
Cache read$0.20
Added
March 31, 2026
Last synced 9/19/2026