Benchable Open Beta

SpaceXAI: Grok 4.20

0
Back
Image input Text input File input Text output
Author's Description

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...

Key Specifications
Cost
$$$$$
Context
2M
Released
Mar 31, 2026
Supported Parameters

This model supports the following parameters:

Max Tokens Temperature Seed Top Logprobs Response Format Structured Outputs Include Reasoning Tool Choice Reasoning Tools Logprobs Top P
Features

This model supports the following features:

Tools Structured Outputs Response Format Reasoning
Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $1.25
Completion $2.5
Input Cache Read $0.2
Web Search $5000

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
xAI
xAI | x-ai/grok-4.20-20260309 2M $1.25 / 1M tokens $2.5 / 1M tokens
xAI
xAI | x-ai/grok-4.20-20260309 2M $1.25 / 1M tokens $2.5 / 1M tokens
xAI
xAI | x-ai/grok-4.20-20260309 2M $2.5 / 1M tokens $5 / 1M tokens
xAI
xAI | x-ai/grok-4.20-20260309 2M $2.5 / 1M tokens $5 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
Other Models by x-ai
 Released Params Context
Speed Ability Cost
SpaceXAI: Grok 4.6 Aug 12, 2026 — 500K
Image input Text input File input Text output
★★ ★★★★★ $$$$$
SpaceXAI: Grok 4.5 Jul 08, 2026 — 500K
Image input Text input File input Text output
★★ ★★★★★ $$$$$
SpaceXAI: Grok Build 0.1 May 20, 2026 — 256K
Image input Text input File input Text output
★★ ★★★★ $$$$$
xAI: Grok 4.3 Unavailable Apr 30, 2026 — 1M
Image input Text input Text output
★★ ★★★★★ $$$$$
SpaceXAI: Grok 4.3 Apr 30, 2026 — 1M
Image input Text input File input Text output
★ ★★★★★ $$$$$
xAI: Grok 4.20 Multi-Agent Unavailable Mar 31, 2026 — 2M
Image input Text input File input Text output
— — $$$$$
SpaceXAI: Grok 4.20 Multi-Agent Mar 31, 2026 — 2M
Image input Text input File input Text output
— — $$$$$
xAI: Grok 4.20 Unavailable Mar 31, 2026 — 2M
Image input Text input Text output
— — $$$$$
xAI: Grok 4.20 Multi-Agent Beta Unavailable Mar 12, 2026 — 2M
Image input Text input Text output
— — $$$$$
xAI: Grok 4.20 Multi-Agent Beta Unavailable Mar 12, 2026 — 2M
Image input Text input File input Text output
★★★ ★★★★★ $$$$$
xAI: Grok 4.20 Beta Unavailable Mar 12, 2026 — 2M
Image input Text input Text output
— — $$$$$
xAI: Grok 4.20 Beta Unavailable Mar 12, 2026 — 2M
Image input Text input Text output
★★★★★ ★★★ $$$$$
xAI: Grok 4.1 Fast Unavailable Nov 19, 2025 — 2M
Image input Text input File input Text output
★★ ★★ $
xAI: Grok 4 Fast Unavailable Sep 18, 2025 — 2M
Image input Text input File input Text output
★★ ★★★★★ $$$$
xAI: Grok Code Fast 1 Unavailable Aug 26, 2025 — 256K
Text input Text output
★★ ★★★★ $$$$$
xAI: Grok 4 Unavailable Jul 09, 2025 — 256K
Image input Text input File input Text output
★ ★★★★★ $$$$$
xAI: Grok 3 Mini Unavailable Jun 10, 2025 ~2.7T 131K
Text input Text output
★★ ★★★★★ $$$$
xAI: Grok 3 Unavailable Jun 10, 2025 ~2.7T 131K
Text input Text output
★★★ ★★★★ $$$$$
xAI: Grok 3 Mini Beta Unavailable Apr 09, 2025 ~2.7T 131K
Text input Text output
★★ ★★★★★ $$$$
xAI: Grok 3 Beta Unavailable Apr 09, 2025 ~2.7T 131K
Text input Text output
★★★ ★★★★ $$$$$
xAI: Grok 2 Vision 1212 Unavailable Dec 14, 2024 — 32K
Image input Text input Text output
★★★★ ★★★ $$$$$
xAI: Grok 2 1212 Unavailable Dec 14, 2024 — 131K
Text input Text output
★★★★ ★★★★ $$$$$
xAI: Grok Vision Beta Unavailable Nov 18, 2024 — 8K
Image input Text input Text output
★★★★★ ★★★ $$$$$
xAI: Grok Beta Unavailable Oct 19, 2024 — 131K
Text input Text output
★★★★★ ★★★★★ $$$$$