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xAI: Grok 4.20 Multi-Agent.

multimodal closed 2M ctx
Cheapest input
$2.0/M
on xAI
Cheapest output
$6.0/M
on xAI
Fastest
427 tok/s
on OpenRouter
Hosted equiv.
~$2.16/hr
@ 100 tok/s on xAI

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...

Hosted API only

No self-host path — closed weights.

xAI: Grok 4.20 Multi-Agent's weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
xAI api direct $2.0 $6.0 Launch ↗
OpenRouter api aggregator $2.0 $6.0 Launch ↗
Performance

Speed across providers.

Tokens/sec and time-to-first-token measured against the same prompt template on each provider's API.

Provider Tokens/sec TTFT Total
OpenRouter 427.5 5314 ms 6723 ms
FAQ

Frequently asked.

How do I run xAI: Grok 4.20 Multi-Agent?
xAI: Grok 4.20 Multi-Agent is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access xAI: Grok 4.20 Multi-Agent?
xAI: Grok 4.20 Multi-Agent is available via xAI, OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run xAI: Grok 4.20 Multi-Agent?
API pricing starts at $2.0/M input tokens and $6.0/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is xAI: Grok 4.20 Multi-Agent open-source or proprietary?
xAI: Grok 4.20 Multi-Agent is a proprietary model from xAI. Access is API-only — there are no public weights to download.