Grok 4.20

byxAI

Grok 4.20 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.

Chat withGrok 4.20

Input Price$2.00/1M tokens

Output Price$6.00/1M tokens

Intelligence48.5

Coding42.2

Specifications

Technical details and pricing.

ProviderxAI

Context Window2,000,000 tokens

Release DateMar 10, 2026

ModalitiesText, Image → Text

CapabilitiesVision

Benchmarks

7 benchmark scores from Artificial Analysis.

GPQA88.5%

HLE30.0%

SciCode44.7%

LCR59.0%

IFBench82.9%

Tau296.5%

TerminalBench Hard40.9%

Composite Indices

Intelligence, Coding, Math

Standard Benchmarks

Academic and industry benchmarks

Frequently Asked Questions

What is Grok 4.20 good for?

Use Grok 4.20 for everyday tasks like writing, summarizing, brainstorming, and getting clear explanations.

How much does Grok 4.20 cost?

Pricing is based on usage. Current rates are $2.00/1M tokens for input and $6.00/1M tokens for output.

Can I try Grok 4.20 for free?

Yes. You can start a chat instantly and test the model before deciding on a plan.

Does Grok 4.20 support images or audio?

Grok 4.20 can understand images.

Similar Models

Other models you might want to explore.

Grok 4.20 Multi-Agent

xAI

Grok 4.20 Multi-Agent is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows.

Details →

Grok 4.1 Fast

xAI

Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window.

Details →

GPT-5.4

OpenAI

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system.

Details →

Benchmarks and pricing are sourced from Artificial Analysis where available. OpenRouter specs are used as a fallback.