When was Grok 4.20 Multi-Agent Beta released, and is it still maintained?

Grok 4.20 Multi-Agent Beta was released on 2026-03-09. Its catalog status is stable. Check the model page for deprecation notices before you build a long-lived integration on it.

Does Grok 4.20 Multi-Agent Beta have a free tier?

Grok 4.20 Multi-Agent Beta is billed per use and the record publishes no free-tier allowance. The current published rates are input $2.0000 per 1M tokens and output $6.0000 per 1M tokens. Trial credit or promotional quota is tied to your account rather than to the model, so check the console before planning around a free tier.

How does Grok 4.20 Multi-Agent Beta compare with grok-4.20-multi-agent-beta-0309, and what should you compare?

Grok 4.20 Multi-Agent Beta sits alongside grok-4.20-multi-agent-beta-0309 , gpt-5.6-sol , claude-fable-5 in the catalog. Compare them on the dimensions that change your bill and your users’ experience: task quality on your own prompts, latency at your concurrency, context and output limits, and cost per completed task rather than per token.

What is the rate limit for Grok 4.20 Multi-Agent Beta?

The current model record does not publish a numeric rate limit for Grok 4.20 Multi-Agent Beta. Confirm the quota for your plan in the console, then run a short load test at your expected concurrency to establish the effective ceiling before production.

How does Grok 4.20 Multi-Agent Beta score on benchmarks?

Recorded results for Grok 4.20 Multi-Agent Beta: arena_text 93.4. Benchmark positions are a coarse filter only — run your own prompts against the candidate models before you commit, because ranking shifts with task shape and prompt style.

Model detail

grok-4.20-multi-agent-0309

Provided by xAI

Pay-as-you-go

A Grok 4.20 configuration in which multiple agents collaborate on deep-research tasks, with text and image inputs.

Model specs

Model ID: grok-4.20-multi-agent-0309

Context length: 1M
Max output: 30K
I/O modalities
Released: 2026-03

API endpoints

One MixRoute gateway, OpenAI-compatible

OpenAI-compatible /v1/chat/completions POST
OpenAI-compatible /v1/responses POST

Pricing

Flat rate, unit: /1M Tokens

Input

$2.0000 /1M Tokens

Completion

$6.0000 /1M Tokens

Cache read

$0.2000 /1M Tokens

Selection summary

Quickly judge whether it fits your workload

What is this model good for?

A Grok 4.20 configuration in which multiple agents collaborate on deep-research tasks

A Grok 4.20 configuration in which multiple agents collaborate on deep-research tasks, with text and image inputs.

What should you check before using it?

1,000,000 context, 30,000 output tokens

xAI model that supports reasoning, tool calling and structured output. Knowledge cutoff: 2025-09. Released 2026-03-09.

Why use it through MixRoute?

Grok 4.20 Multi-Agent Beta keeps its 1,000,000-token context on one route

The full 1,000,000-token context stays reachable on the same route. MixRoute serves Grok 4.20 Multi-Agent Beta on the OpenAI-compatible endpoint /v1/chat/completions; point your existing client at https://api.mixroute.ai/v1 with the model ID grok-4.20-multi-agent-0309 and re-run your integration tests.

Capabilities & compatibility

Unconfirmed capabilities stay "Unknown," no guesses

Tool calling

Grok 4.20 Multi-Agent Beta supports function and tool calls.

EX Send a tools definition; the response returns tool_calls to execute and feed results back.

Structured output

Grok 4.20 Multi-Agent Beta can produce JSON-formatted output on demand.

EX response_format: { type: "json_schema" } forces valid JSON output.

Streaming

Grok 4.20 Multi-Agent Beta supports streamed responses.

EX stream: true streams tokens incrementally, so chat UIs render as they arrive.

Prompt caching

Grok 4.20 Multi-Agent Beta supports prompt caching under supported routing conditions.

EX Keep the system prompt and tool definitions at the start of the request; repeated prefixes are automatically billed at the cache-read rate.

Vision input

Grok 4.20 Multi-Agent Beta can process image inputs alongside text.

EX Pass a base64-encoded image in a image_url content part alongside text messages.

OpenAI SDK

Call Grok 4.20 Multi-Agent Beta through MixRoute's OpenAI-compatible endpoint.

EX Change base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.

Token cost estimator

Live estimate from this page's pricing, not an actual bill

Input tokens Max per request 1M

Output tokens Max per request 30K

Requests / month

Cache hit rate 0%

Share of the same prefix read repeatedly, up to 100%

FAQ

Grok 4.20 Multi-Agent Beta is a reasoning model. Reasoning effort can be tuned per request. Lower effort settings cut reasoning tokens and cost for routine work; reserve higher settings for problems that need deeper search. Measure quality at two or three settings before fixing one in production.

Get started

01

Create an API key

Generate a key in the Console; one key calls every model.
02

Set the base URL

Fully OpenAI SDK-compatible; just swap the URL to connect.

https://api.mixroute.ai/v1
03

Specify the model ID

In the request's model field, enter:

grok-4.20-multi-agent-0309

Create an API key

New users get $5 in free credits

Test this model and alternate routes with the same request format

Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.

Create an API key View integration docs