xAI: Grok 4.20 Multi-Agent 0309
x-ai/grok-4.20-multi-agent-0309
Try Grok 4.20 Multi-Agent 0309 for free in your browser, and add it to your app for free with Puter.js AI API.
Try it free Add to your app// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "x-ai/grok-4.20-multi-agent-0309"
}).then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms", {
model: "x-ai/grok-4.20-multi-agent-0309"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
Grok 4.20 Multi-Agent 0309 is a dated, pinned snapshot of xAI's Grok 4.20 Multi-Agent model, released March 9, 2026, for applications that need a fixed model version rather than a floating alias.
It shares the base model's multi-agent architecture, coordinating agents that search, analyze, and cross-check information in parallel before combining the results into one response, for deep research and multi-step analysis tasks.
Compared with the general-availability grok-4.20-multi-agent release, this snapshot has a 1 million token context window and a 30,000 token output limit, versus 2 million tokens for both on the later release, and it does not support tool calling through the API. It accepts text, image, and PDF input and returns text, with a knowledge cutoff of July 2025.
Pricing is $1.25 per million input tokens and $2.50 per million output tokens, matching the later release. It suits developers who need a reproducible, version-pinned identifier for multi-agent workflows.
Context Window 1M
tokens
Max Output 30K
tokens
Input Cost $1.25
per million tokens
Output Cost $2.5
per million tokens
Input text, image, pdf
modalities
Tool Use No
Knowledge Cutoff Jul 2025
Release Date Mar 9, 2026
Try Grok 4.20 Multi-Agent 0309 for free
Try Grok 4.20 Multi-Agent 0309 instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
More AI Models From xAI
Grok 4.7
Grok 4.7 is xAI's flagship chat model, released September 21, 2026 as the successor to Grok 4.6. It is built on a larger base model with extended reinforcement learning focused on difficult, multi-hour tasks and on stronger self-verification of its own output. On the Artificial Analysis Intelligence Index it scores 46, trailing Claude Fable 5.1 and GPT-5.6 Sol at 53 each, but it improves over Grok 4.6 on professional-work benchmarks: AA Briefcase rises from 1,546 to 1,657, the Harvey Legal Agent Benchmark from 15.8% to 19.6%, and HealthBench Professional from 48.5% to 56.7%. For coding it scores 46.3% on CursorBench 4.0, ahead of GPT-5.6 Sol Max (41.7%) but behind Claude Fable 5.1 (51.8%). With a 500K token context window, it suits coding and knowledge-work agents that want frontier price-performance rather than the top agentic score.
ChatGrok 4.6
Grok 4.6 is xAI's frontier model for long-running agents and interactive, visual development work, built on the same 1.5-trillion-parameter V9 foundation as Grok 4.5 with additional supervised fine-tuning and reinforcement learning. It matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index (both score 61) and leads on CursorBench v3.2 at 69.9%, with gains over Grok 4.5 across coding, research, and agentic benchmarks. xAI highlights it for vulnerability patching, engineering design work, and turning a rough product idea into a working first version, with improved self-testing on longer tasks. The model accepts text and image input with text-only output, a 500,000 token context window, and no output token limit. Reasoning effort is configurable across four levels (low, medium, high, xhigh), and it supports function calling, web search, X search, and code execution. At $2 per million input tokens and $6 per million output tokens, it costs the same as Grok 4.5.
ImageGrok Imagine Image 2.0
Grok Imagine Image 2.0 is xAI's second-generation text-to-image and image-editing model, released August 7, 2026 as the Quality Mode successor to Grok Imagine Image and Grok Imagine Image (Quality). It is built to produce images usable in real work rather than drafts: it follows instructions closely, plans typography and layout, and preserves elements across generations and edits. New editing tools include a magic wand for targeted region edits, segmentation for selecting precise areas, background removal with transparency, and multi-reference editing that accepts up to five input images in one generation. Smart resize recomposes an image across nine aspect ratios automatically. xAI reports it ranks second in the world on both the Arena text-to-image and image-edit leaderboards, behind OpenAI's gpt-image-2. It ships with ready-made templates for recurring workflows such as product shots, headshots, icons, and game assets, making it suited to product photography, e-commerce content, and character or marketing design work.
Frequently Asked Questions
You can access Grok 4.20 Multi-Agent 0309 by xAI through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Grok 4.20 Multi-Agent 0309 is free to try with a Puter account. Every account includes a free AI allowance, and you can chat with it in the playground on this page. You can upgrade your account anytime for a larger allowance.
Grok 4.20 Multi-Agent 0309 is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price per 1M tokens | |
|---|---|
| Input | $1.25 |
| Output | $2.5 |
Grok 4.20 Multi-Agent 0309 was created by xAI and released on Mar 9, 2026.
Grok 4.20 Multi-Agent 0309 supports a context window of 1M tokens. For reference, that is roughly equivalent to 2,000 pages of text.
Grok 4.20 Multi-Agent 0309 can generate up to 30K tokens in a single response.
Grok 4.20 Multi-Agent 0309 has a knowledge cutoff date of Jul 2025. This means the model was trained on data available up to that date.
Grok 4.20 Multi-Agent 0309 accepts the following input types: text, image, pdf. It produces: text.
No, Grok 4.20 Multi-Agent 0309 does not currently support tool use (function calling).
Yes — the Grok 4.20 Multi-Agent 0309 API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Add Grok 4.20 Multi-Agent 0309 to your app for free
Developers can integrate Grok 4.20 Multi-Agent 0309 for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.