xAI: Grok 4.20 Multi-Agent Beta
Analysis Summary
xAI's Grok 4.20 Multi-Agent Beta is a vision-capable model with a 2M context window and support for tool use. Its supplied measurements show excellent overall reasoning, particularly strong agentic performance, and strong instruction following and tool-use results. Coding capability is also strong, though it is not at the very highest coding tier represented in the broader landscape. This is a broadly capable model for complex, tool-connected tasks.
For an agency, it is a strong fit for multi-step research, long-document analysis, and agent workflows that combine visual input with external tools. The context capacity is useful for large knowledge sets, while its measured capabilities support more demanding work than routine content generation alone. Pricing is high, so using it for every low-risk request would be inefficient. Reserve it for tasks where its reasoning and agentic strengths can reduce manual effort or improve important deliverables.
Assessed September 23, 2026
Editorial notes
Grok 4.20 Multi-Agent Beta combines excellent reasoning and agentic performance with a 2M context, vision, and strong instruction following; its premium pricing favors high-value work.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
Grok 4.20 Multi-Agent Beta combines excellent reasoning and agentic performance with a 2M context, vision, and strong instruction following; its premium pricing favors high-value work.
Benchmarks
Artificial Analysis data refreshed Sep 30, 2026. Arena ratings from the Sep 25, 2026 text leaderboard, with style control. Bars: magenta = reasoning, ink = coding and agents, cyan = instructions and long context.
Artificial Analysis no longer lists this model, so its indexes are converted from their older scale to stay comparable.
How xAI: Grok 4.20 Multi-Agent Beta compares
XAI: Grok 4.20 Multi-Agent Beta ranks #40 of 431 AI models we track for overall intelligence, #107 of 198 for coding, #14 of 181 for agentic tasks. Its 2M-token context window is larger than 100% of the models we list. At $2.00 per million input tokens it is cheaper than 17% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $2.00 | $0.002000 |
| Output | $6.00 | $0.006000 |
What would xAI: Grok 4.20 Multi-Agent Beta cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 688 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save xAI: Grok 4.20 Multi-Agent Beta for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout xAI: Grok 4.20 Multi-Agent Beta
Grok 4.20 Multi-Agent Beta is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information across complex tasks. Reasoning effort behavior:
- low / medium: 4 agents
- high / xhigh: 16 agents
Frequently asked questions about xAI: Grok 4.20 Multi-Agent Beta
How much does xAI: Grok 4.20 Multi-Agent Beta cost?
xAI: Grok 4.20 Multi-Agent Beta costs $2.00 per million input tokens and $6.00 per million output tokens.
What is the context window of xAI: Grok 4.20 Multi-Agent Beta?
xAI: Grok 4.20 Multi-Agent Beta has a context window of 2,000,000 tokens (2M).
Is xAI: Grok 4.20 Multi-Agent Beta good for coding?
On our coding benchmark index, xAI: Grok 4.20 Multi-Agent Beta ranks #107 of 198 models, placing it in the broader range of the field for code generation and debugging.
What can xAI: Grok 4.20 Multi-Agent Beta do?
xAI: Grok 4.20 Multi-Agent Beta supports image/vision input and tool use.
Who created xAI: Grok 4.20 Multi-Agent Beta?
xAI: Grok 4.20 Multi-Agent Beta is developed by xAI and was released on March 12, 2026.