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Ultra Mode · GPT-5.4

Ultra Mode with GPT-5.4 for harder questions.

Let 2–4 specialized agents analyze your prompt with GPT-5.4, then synthesize one polished answer. Uses your normal Pro request allowance. 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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  • 01Parallel agent roles
  • 02Synthesis pass
  • 03Pro request billing
Ultra preview
Compare these three architecture options for our API gateway.
GPT-5.4

Parallel agent analysis produced one decision-ready summary:

  1. 01Trade-off matrix across latency, cost, and ops burden
  2. 02Failure modes each design invites
  3. 03Recommended default with migration path

Ask anything

SearchLow

Beyond a single completion

Complex trade-offs need more than one pass

GPT shines at structured reasoning—but hard decisions benefit from deliberate multi-perspective review.

  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 GPT-5.4

What you get on this model.

GPT-5.4 powers each parallel agent and the final synthesis in one thread.

01

2 / 3 / 4 parallel agents

Pick how many perspectives run before synthesis.

Costs agent count + 1 requests per turn.

02

GPT-5.4

All agent calls and synthesis use GPT-5.4 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 GPT-5.4.

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 GPT-5.4 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 GPT-5.4.

01

Architecture and product decisions

“Compare these three architecture options for our API gateway.”

Select Ultra ModeChoose GPT-5.4Pick 3 agents
OutcomeOne coherent recommendation with dissent called out explicitly.
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

GPT-5.4 Ultra questions

Can I run Ultra Mode with GPT-5.4?

Yes. Select GPT-5.4 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).

How is this different from asking the same model twice?

Agents receive role-specific system instructions (Skeptic, Analyst, Creative, Pragmatist) and run in parallel before a dedicated synthesis step merges their perspectives.

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 GPT-5.4 on Pro.

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

Get startedView live demo