Gemini vs ChatGPT in 2026: Gemini 3.1 Pro vs GPT-6 Astra, Same Prompt in One Chat

The gemini vs chatgpt choice in 2026 comes down to three things: Google AI Pro ($19.99/month) unlocks Gemini 4 Argon with video generation (source), ChatGPT Plus ($20/month) unlocks GPT-6 Astra with image generation but no video listed (source), and Omnely puts the Gemini 3.x family and the GPT-6 Astra family on one credit balance so you can test both without two subscriptions.

Feature	Gemini	ChatGPT
Paid entry price	Google AI Plus $4.99/mo (source)	ChatGPT Plus $20/mo (source)
Top model on mid plan	Gemini 4 Argon on Google AI Pro $19.99/mo (source)	GPT-6 Astra on ChatGPT Plus $20/mo (source)
Image generation	Included on all plans (source)	Included on all plans, limited on no-cost (source)
Video generation	On Plus and Pro (source)	Not listed on any plan (source)
Deep research	Included on no-cost plan (source)	Limited on no-cost and Go, expanded on Plus (source)

Ask Gemini 3.1 Pro and GPT-6 Astra the same question in one Omnely Chat thread, with Claude Opus 5 and Grok 4.6 in the same model picker.

What are the three biggest AI news stories this week, and what is the main open question in each? Answer in a short bulleted list.

Same prompt, two answers: Gemini 3.1 Pro vs GPT-6 Astra

These are the models' own answers to a news prompt, run in Omnely Chat on Oct 16, 2026. The news claims in them are unverified, are not presented here as fact, and the answers differ from each other.

• Overlap: both answers lead with regulatory scrutiny of OpenAI and Anthropic.
• Gemini 3.1 Pro framed that story as FTC and EU AI Office investigations over agent containment, then listed Gemini 4 Argon coding agents finishing Minecraft and a cooling Anthropic IPO valuation. It wrote headline-style bullets and gave no sources.
• GPT-6 Astra dated its picks October 12–16, 2026, added state lawsuits to the FTC story, then listed a Meta launch it called Muse Wonder and a financing test for AI spending, with a source domain after each item.
• Where they split: only one story theme overlaps, and each model's other picks are different, so treat any news answer as a lead to check rather than a fact.

Gemini vs ChatGPT: plans and prices

Both ladders start with a no-cost plan and climb in roughly matched steps, but the top rungs look very different.

Google AI plans:

• No-cost plan: $0/month, Flash-Lite model, image generation and editing, Deep Research (source)
• Google AI Plus: $4.99/month, Flash model, video generation, 200 Flow credits (source)
• Google AI Pro: $19.99/month, Gemini 4 Argon, Pro model, video generation, 1,000 Flow credits, 5 TB storage (source)
• Google AI Ultra: from $99.99/month (5x AI Pro limits) or $199.99/month (20x) (source)

ChatGPT plans:

• No-cost plan and ChatGPT Go: get GPT-6 Luna, limited image generation and limited deep research (source)
• ChatGPT Plus: $20/month, GPT-6 Astra and GPT-6 Sol, expanded deep research, image generation, no video listed (source)
• ChatGPT Pro: $100, $200 and $500 per month tiers (source)

The headline mismatch: Google's $19.99 Pro tier includes video generation. OpenAI's $20 Plus tier does not list video (source, source). If video matters, that one line changes the whole comparison. See Can ChatGPT make videos? for the longer answer.

Models and chat

Google AI Pro gives you Gemini 4 Argon as the flagship chat model (source). ChatGPT Plus gives you GPT-6 Astra and GPT-6 Sol (source).

On Omnely, both families sit in the same chat picker:

• Google: Gemini 3.1 Pro, Gemini 3.5 Flash, Gemini 3.6 Flash
• OpenAI: GPT-6 Astra, GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-5.5, GPT-5.4, GPT-5, GPT-4o
• Others in the same picker: Grok 4.6, Grok 4.3, Claude Opus 5, Claude Sonnet 5, Claude Fable 5.1, Kimi K3, DeepSeek V4 Flash

Gemini 4 Argon itself is not on Omnely; Gemini 3.1 Pro is the closest live Google chat model in the picker. Chat is metered per message by tokens and model, with Effort and Web toggles exposed. A short exchange on Grok 4.3 lands around 1 credit; flagship models such as GPT-6 Astra cost more per message.

If you want to see how Omnely stacks up against the single-vendor route, this ChatGPT alternative guide walks through the mechanics, and the Grok vs ChatGPT comparison covers the xAI side of the same picker.

Image and video

Google ships image generation on every plan and video generation on Plus and Pro (source). ChatGPT ships image generation on every plan but does not list video generation on any plan (source). That is the single biggest functional gap between the two assistants in 2026.

Both image sides are also on Omnely outside chat: the Nano Banana 2 model page covers Google's image model and the GPT Image 2 model page OpenAI's. For the video question, see can ChatGPT make videos.

Which should you pick?

• Writing, research, email and docs on one vendor → ChatGPT Plus $20/mo for GPT-6 Astra (source), or Google AI Plus $4.99/mo if the Workspace tie-in matters more (source).
• Gemini 4 Argon and 5 TB of storage → Google AI Pro $19.99/mo (source).
• Image generation only → either. Both list it on every plan.
• Native video generation inside the assistant → Google AI Plus or Pro (source). ChatGPT does not list video (source).
• Mixed work: the same question to Gemini 3.1 Pro, GPT-6 Astra, Claude Opus 5 and Grok 4.6 → one Omnely chat on one balance.

Omnely fits when the answer is "both": one chat picker that holds Gemini 3.x, the GPT-6 family, Claude Opus 5 and Grok 4.6, on one credit balance.

Gemini vs ChatGPT FAQ

Is Gemini better than ChatGPT?

Neither wins across the board. Google's plans add video generation, Flow credits and storage (source); ChatGPT Plus adds GPT-6 Astra, deep research and projects (source). The task picks the model, not the brand.

Can Gemini make videos?

Yes. Google AI Plus and Google AI Pro both include video generation; Pro also ships 1,000 Flow credits per month (source). ChatGPT does not list video generation on any plan (source).

How much is Google AI Pro?

Google AI Pro is $19.99/month and includes Gemini 4 Argon, the Pro model, video generation, 1,000 Flow credits and 5 TB of storage (source). Google AI Ultra starts at $99.99/month for 5x the Pro limits (source).

Can you use both on one account?

Yes, on Omnely. Gemini 3.1 Pro, Gemini 3.5 Flash and Gemini 3.6 Flash sit next to GPT-6 Astra and the GPT-5.6 family in the same chat picker, with Claude Opus 5 and Grok 4.6 on the same credit balance. Gemini 4 Argon itself is only available from Google directly. New users get free credits when they sign up on Omnely.

Ready to run the comparison yourself? Open Omnely Chat to flip between Gemini 3.1 Pro and GPT-6 Astra on the same prompt.