Grok-3 vs Grok-4.20 Multi-Agent Beta Comparison

Comparing Grok-3 and Grok-4.20 Multi-Agent Beta across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Grok-3 and Grok-4.20 Multi-Agent Beta don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok-4.20 Multi-Agent Beta costs less

For input processing, Grok-3 ($3.00/1M tokens) is 1.5x more expensive than Grok-4.20 Multi-Agent Beta ($2.00/1M tokens).

For output processing, Grok-3 ($15.00/1M tokens) is 2.5x more expensive than Grok-4.20 Multi-Agent Beta ($6.00/1M tokens).

In conclusion, Grok-3 is more expensive than Grok-4.20 Multi-Agent Beta.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Grok-3

Input tokens$3.00

Output tokens$15.00

Best providerxAI

Grok-4.20 Multi-Agent Beta

Input tokens$2.00

Output tokens$6.00

Best providerxAI

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Context Window

Maximum input and output token capacity

Grok-4.20 Multi-Agent Beta accepts 2,000,000 input tokens compared to Grok-3's 128,000 tokens. Grok-4.20 Multi-Agent Beta can generate longer responses up to 30,000 tokens, while Grok-3 is limited to 8,000 tokens.

Grok-3

Input128,000 tokens

Output8,000 tokens

Grok-4.20 Multi-Agent Beta

Input2,000,000 tokens

Output30,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Grok-3 and Grok-4.20 Multi-Agent Beta support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Grok-3

Text

Images

Audio

Video

Grok-4.20 Multi-Agent Beta

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Grok-3

Proprietary

Closed source

Grok-4.20 Multi-Agent Beta

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-3 was released on 2025-02-17, while Grok-4.20 Multi-Agent Beta was released on 2026-03-09.

Grok-4.20 Multi-Agent Beta is 13 months newer than Grok-3.

Grok-3

Feb 17, 2025

1.1 years ago

Grok-4.20 Multi-Agent Beta

Mar 9, 2026

5 days ago

1.1yr newer

Knowledge Cutoff

When training data ends

Grok-3 has a documented knowledge cutoff of 2024-11-17, while Grok-4.20 Multi-Agent Beta's cutoff date is not specified.

We can confirm Grok-3's training data extends to 2024-11-17, but cannot make a direct comparison without Grok-4.20 Multi-Agent Beta's cutoff date.

Grok-3

Nov 2024

Grok-4.20 Multi-Agent Beta

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Provider Availability

Grok-3 is available from xAI. Grok-4.20 Multi-Agent Beta is available from xAI. The availability of providers can affect quality of the model and reliability.