What is the default xAI model in Sim?

Grok 4.6 is the default xAI model in Sim.

What is the cheapest xAI model tracked in Sim?

Grok Code Fast 1 currently has the lowest listed input price at $1/1M tokens.

Which xAI model has the largest context window?

Grok 4.3 currently has the largest listed context window at 1M tokens.

Which xAI models support tool use and function calling in Sim?

All xAI models in Sim support tool use and function calling, allowing agents to invoke external APIs, query databases, and run custom actions.

Back to Models

xAI models

16 models

Release timeline

When each model was first publicly available.

Grok 3 LatestFeb 17, 2025

Grok 3 Fast LatestFeb 17, 2025

Grok 4 LatestJul 9, 2025

Grok 4 0709Jul 9, 2025

Grok Code Fast 1Aug 28, 2025

Grok 4 Fast ReasoningSep 19, 2025

Grok 4 Fast Non ReasoningSep 19, 2025

Grok 4.1 Fast ReasoningNov 19, 2025

Grok 4.1 Fast Non ReasoningNov 19, 2025

Grok 4.20 0309 ReasoningMar 10, 2026

Grok 4.20 0309 Non ReasoningMar 10, 2026

Grok 4.20 Multi Agent 0309Mar 10, 2026

Grok 4.7

grok-4.7

$2/1M in$6/1M out500k ctx

Grok 4.6

grok-4.6

$2/1M in$6/1M out500k ctx

Grok 4.5

grok-4.5

$2/1M in$6/1M out500k ctx

Grok 4.3

grok-4.3

$1.25/1M in$2.5/1M out1M ctx

Grok 4 Latest

grok-4-latest

$1.25/1M in$2.5/1M out1M ctx

Grok 4 0709

grok-4-0709

$1.25/1M in$2.5/1M out1M ctx

Grok 4.1 Fast Reasoning

grok-4-1-fast-reasoning

$1.25/1M in$2.5/1M out1M ctx

Grok 4.1 Fast Non Reasoning

grok-4-1-fast-non-reasoning

$1.25/1M in$2.5/1M out1M ctx

Grok 4 Fast Reasoning

grok-4-fast-reasoning

$1.25/1M in$2.5/1M out1M ctx

Grok 4 Fast Non Reasoning

grok-4-fast-non-reasoning

$1.25/1M in$2.5/1M out1M ctx

Grok Code Fast 1

grok-code-fast-1

$1/1M in$2/1M out256k ctx

Grok 4.20 0309 Reasoning

grok-4.20-0309-reasoning

$1.25/1M in$2.5/1M out1M ctx

Grok 4.20 0309 Non Reasoning

grok-4.20-0309-non-reasoning

$1.25/1M in$2.5/1M out1M ctx

Grok 4.20 Multi Agent 0309

grok-4.20-multi-agent-0309

$1.25/1M in$2.5/1M out1M ctx

Grok 3 Latest

grok-3-latest

$1.25/1M in$2.5/1M out1M ctx

Grok 3 Fast Latest

grok-3-fast-latest

$1.25/1M in$2.5/1M out1M ctx

Frequently asked questions

Sim currently tracks 16 xAI models including Grok 4.7, Grok 4.6, Grok 4.5, Grok 4.3, Grok 4 Latest, Grok 4 0709, and more.

xAI models

Release timeline

Grok 4.7

Grok 4.6

Grok 4.5

Grok 4.3

Grok 4 Latest

Grok 4 0709

Grok 4.1 Fast Reasoning

Grok 4.1 Fast Non Reasoning

Grok 4 Fast Reasoning

Grok 4 Fast Non Reasoning

Grok Code Fast 1

Grok 4.20 0309 Reasoning

Grok 4.20 0309 Non Reasoning

Grok 4.20 Multi Agent 0309

Grok 3 Latest

Grok 3 Fast Latest

Frequently asked questions

What xAI models are available in Sim?

What is the default xAI model in Sim?

What is the cheapest xAI model tracked in Sim?

Which xAI model has the largest context window?

Which xAI models support tool use and function calling in Sim?

Every agent your company runs. All in one place.