Question 1

What is Grok 4.20 Multi-Agent?

Accepted Answer

Grok 4.20 Multi-Agent is a model from xAI, released on Mar 10, 2026. Grok 4.20 Multi-Agent 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.

Question 2

How much does Grok 4.20 Multi-Agent cost?

Accepted Answer

On the Respan gateway, input starts at $1.25 per 1M tokens on every provider, and output starts at $2.50 per 1M tokens on every provider, after gateway discounts.

Question 3

Which providers serve Grok 4.20 Multi-Agent on Respan?

Accepted Answer

9 providers serve Grok 4.20 Multi-Agent: OpenRouter, Perplexity, and xAI. Perplexity requires your own provider API key (BYOK).

Question 4

What is Grok 4.20 Multi-Agent's context window?

Accepted Answer

Grok 4.20 Multi-Agent accepts up to 2M tokens of context on its largest provider route.

Question 5

How do I use Grok 4.20 Multi-Agent with the Respan gateway?

Accepted Answer

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "xai/grok-4.20-multi-agent-experimental-beta-0304". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Question 6

How fast is Grok 4.20 Multi-Agent?

Accepted Answer

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 435 tokens per second, and the lowest response latency was 3.6 seconds on OpenRouter. Speed varies with request size and provider.

Provider	Context	Input	Output
OpenRouter`openrouter/x-ai/grok-4.20-multi-agent`	2M	$1.25/M	$2.50/M
PerplexityBYOK only`perplexity/xai/grok-4.20-multi-agent`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent-0309`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent-beta-0309`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent-beta-latest`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent-experimental-beta-0304`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent-experimental-beta-latest`	1M	$1.25/M	$2.50/M
xAI`xai/grok-4.20-multi-agent-latest`	1M	$1.25/M	$2.50/M

Grok 4.20 Multi-Agent

Providers

Certified where it counts.

Pricing

Cost by volume

Throughput and latency

Output speed

Response latency

Apps