How to Use Gemini 4 Argon in the Gemini App

Gemini 4 Argon arrived in the Gemini app on October 13, 2026 for Google AI Pro and Ultra subscribers. The model handles long-horizon reasoning, coding, document analysis, and multi-step work better than earlier Gemini versions. It answers more directly, shares progress on longer jobs, and supports a unified 1 million token context window.

This guide shows exactly how to select Argon, turn on Tasks mode, and get useful results on complex projects. Developers who need the model inside Android apps can follow our separate guide on adding Gemini 4 Argon with Firebase AI Logic.

What you need before you start

You must subscribe to Google AI Pro or Google AI Ultra. Free accounts and basic plans do not include Argon. Sign in with the same Google account you use for the subscription.

Update the Gemini mobile app or open gemini.google.com in a browser. Argon appears in the model picker once the rollout reaches your account. If it is missing, wait a day and check again.

Select Gemini 4 Argon in the app

Open the Gemini app on your phone or the web version. Tap or click the model name near the input box. The list shows available models such as Gemini 3.8 Flash and Gemini 4 Argon.

Choose Gemini 4 Argon. On mobile the picker sits in the prompt bar. On the web it appears inside the text box at the bottom of the page. The selection stays active for the current conversation.

Argon supports text, images, PDFs, audio, and video inputs. Attach files directly in the chat before you send your prompt. The model keeps the full context across the 1 million token window.

Switch to Tasks mode for longer work

The Gemini app includes a chat-to-tasks toggle. Use it when the job will take time or when you need to step away. Tap the toggle so Gemini continues working in the background.

Tasks mode lets Argon plan steps, use connected apps, and report progress. It works well for research summaries, document organization, or multi-part coding outlines. Google AI Pro and Ultra subscribers can leave the task running while they do other things.

Connect more than 40 apps including Instacart, OpenTable, Adobe, and Shopify. Once linked, Argon can pull data or complete actions inside those services from the same chat.

Run a complex prompt step by step

Start with a clear goal. Tell Argon the outcome you want and any constraints. For example: “Summarize this 40-page PDF into a five-slide outline. Include three key data points per slide and flag any contradictions.”

Upload the file. Set thinking to high if the interface offers the control. Argon then breaks the work into stages and shows progress updates.

Review the first draft. Ask follow-up questions such as “Add source page numbers to each claim” or “Rewrite the second slide in bullet points only.” The model holds the earlier context, so you do not need to restate the whole request.

Export the result. On the web version you can copy the text, download generated files, or continue editing. On Mac, the Gemini app also offers the Antigravity coding interface for users who want to move between chat and code.

Tips that improve results

Ask Argon to list clarifying questions before it starts a long job. This prevents wasted work on the wrong target.

Prefer medium or high thinking for analysis and coding. Low thinking works for simple rewrites or short summaries and uses fewer tokens.

Break very large projects into sequential chats if the single response grows too long. Feed the previous output back as the starting point for the next step.

Check the model’s progress notes. Argon reports intermediate findings more often than earlier versions, so you can correct direction early.

Limitations to expect

Argon is not free. Introductory API pricing of $2 per million input tokens and $10 per million output tokens applies through November 30, 2026, then rises. App usage counts against your Google AI Pro or Ultra quota.

The model does not generate images itself. It can analyze images and videos you upload, and it can work with connected design tools, but image creation still routes to other Gemini features such as Nano Banana.

Some advanced agent features appear first for Ultra subscribers or in Google Antigravity. Check the Gemini help center if a control is missing.

Conclusion

Gemini 4 Argon is available today in the Gemini app for Google AI Pro and Ultra subscribers. Select the model, turn on Tasks mode for longer jobs, and give it clear goals with attached files. The 1 million token window and improved progress reporting make it practical for document review, research, and multi-step planning that earlier models handled less reliably.

Start with a single complex file or research question to see the difference. Developers building Android features can use the same model through Firebase AI Logic as described in our linked guide.

Sources

• Google Blog: Gemini 4 Argon is now available in the Gemini app (October 13, 2026)
• Google Blog: Gemini 4 Argon is now available for everyone
• Google AI for Developers: Gemini 4 Argon model documentation
• YouTube: Gemini 4 Argon Full Tutorial for Beginners (Mikey No Code)