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Ultra Mode · Grok 4.3

Ultra Mode with Grok 4.3 for harder questions.

Run Grok 4.3 in Ultra Mode with native Grok multi-agent orchestration—or compare Grok against other providers in the same subscription. Full workspace access requires a Pro or Lifetime plan.

See plansExplore Ultra Mode

Pro from $14.99/month · Lifetime $149.99 one-time

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  • 01Native Grok multi-agent
  • 022–4 agent UI
  • 03Expandable discussion
Ultra preview
What would break if we 10× traffic next quarter?
Grok 4.3

Grok native multi-agent orchestration delivered:

  1. 01Bottlenecks ranked by severity
  2. 02Monitoring gaps to close first
  3. 03Staged mitigation plan with owners

Ask anything

SearchLow

Beyond a single completion

Super Grok locks you to one ecosystem

xAI multi-agent is powerful—but milkyway.chat runs Ultra on Grok and every other provider in the same workspace.

  1. 01

    One perspective

    A single model pass optimizes for one coherent answer—not four independent reviews.

  2. 02

    Hidden assumptions

    Without a skeptic or pragmatist lane, risky assumptions survive until production.

  3. 03

    Manual re-prompting

    Asking the same model repeatedly in new chats loses shared context and costs time.

Ultra with Grok 4.3

What you get on this model.

Grok 4.3 can use xAI native multi-agent inference inside the milkyway.chat Ultra UX.

01

2 / 3 / 4 parallel agents

Pick how many perspectives run before synthesis.

Costs agent count + 1 requests per turn.

02

Grok 4.3

All agent calls and synthesis use Grok 4.3 unless you switch models mid-thread.

Change models anytime in the workspace.

03

Expandable discussion

Inspect Skeptic, Analyst, Creative, and Pragmatist outputs after the answer.

Optional transparency, not noise in the main reply.

04

Attachments in context

PDFs and images in the thread stay available to Ultra agents.

Same thread, same materials.

05

Live search compatible

Enable live search on supported turns when facts must be current.

Per-message control.

06

Reasoning depth

Supported reasoning controls apply where the model allows.

Model-dependent.

Ultra loop

How Ultra Mode runs on Grok 4.3.

Select the model first—Ultra orchestration wraps around it.

  1. 01

    Choose Ultra Mode

    Available on Pro and Lifetime plans in the prompt mode menu.

  2. 02

    Set Grok 4.3 and agent count

    Pick 2–4 agents. The UI shows how many requests the turn will use.

  3. 03

    Read synthesis + discussion

    Get the merged answer, then expand agent discussion if you want the raw perspectives.

Examples

When to use Ultra with Grok 4.3.

01

Ops and incident planning

“What would break if we 10× traffic next quarter?”

Select Ultra ModeChoose Grok 4.3Pick 3 agents
OutcomeFast native Grok multi-agent when selected, with transparent request billing.
02

High-stakes email or doc

“Find weak claims in this draft before I send it.”

Attach PDFUltra ModeExpand agent discussion
OutcomeFinal polish plus visible critique lanes to verify.
03

Compare with another model

“Same question, but I'll rerun Ultra on a different provider.”

Branch threadSwitch modelUltra again
OutcomeFair comparison because setup stays consistent in one workspace.

FAQ

Grok 4.3 Ultra questions

Can I run Ultra Mode with Grok 4.3?

Yes. Select Grok 4.3 in the workspace, choose Ultra Mode (Pro or Lifetime), and pick 2–4 parallel agents. Each turn uses your normal request allowance (e.g. 4 requests for 3 agents including synthesis).

Does Grok 4.3 use Grok native multi-agent?

Yes. When a Grok chat model is selected, Ultra Mode can route through xAI's native grok-4.20-multi-agent orchestration for a faster single-stream answer while preserving the Ultra UX.

Can I read what each agent said?

Yes. After the response completes, expand Agent discussion on the message to inspect each perspective.

How much does milkyway.chat cost?

Pro is $14.99 per month and includes all premium models plus voice chat. Lifetime is $149.99 as a one-time payment and lets you bring your own API keys. Visit the pricing page for current plan details.

Can I try the workspace before subscribing?

Yes. You can explore the interactive math visualization example without a subscription. After signing in, you can browse the workspace interface, but sending messages requires an active Pro or Lifetime plan.

Ready to get started

Run Ultra Mode with Grok 4.3 on Pro.

Pick Pro or Lifetime on the pricing page, then start with the model and tools your task needs.

Get startedView live demo