Gemini is Google’s conversational AI gateway, and by 2026 it has expanded from a single chat product into a full ecosystem: the core language models Gemini 3.1 Pro and the 2.5 series, the programming agents Gemini CLI and Jules, the video generation model Veo 3.1, the research assistant NotebookLM, and Workspace features integrated into Gmail/Docs/Search/Chrome. This guide organizes Gemini subscription plans (Free to Enterprise), the positioning of every product line, privacy and data policies, and the differences versus ChatGPT and Claude—so you can decide in 5 minutes which plan to subscribe to, and which features you can use, without reading every Google official document.
Gemini product lineup at a glance (latest as of May 2026)
Product Type Use Case How to Get Gemini 3.1 Pro / 2.5 series Language models Writing, research, programming, reasoning, multimodal Gemini App, Gemini API, Vertex AI Gemini CLI Programming agent Terminal code editing, shell integration npm install, requires a Google account Jules Asynchronous programming agent Cloud execution to fix bugs, write tests, and produce PR jules.google, GitHub integration Veo 3.1 Video generation 8-second 720p-4K videos with native audio Gemini App, Vertex AI, API NotebookLM Research / note assistant Data organization, Deep Research, audio summaries notebooklm.google.com Imagen Image generation Product images, illustrations, community assets Gemini App, Vertex AI Workspace integration Workspace AI inside apps Gmail drafting emails, Docs summaries, Sheets analysis Paid Workspace auto-activated
Gemini 3.1 Pro and 2.5 series: model tiers and differences
Gemini 3 Pro launched on November 18, 2025, and Google positions it as “the smartest model to date”; on February 19, 2026, Gemini 3.1 Pro launched, further improving performance on complex tasks. The Gemini 2.5 series is also maintained in parallel:
Gemini 3.1 Pro: flagship, strongest reasoning, available via Google One AI Premium or Vertex AI
Gemini 2.5 Pro: mainstay for mid-to-high end use, API open (input $1.25/output $10 per 1M tokens); starting April 1, 2026, Pro models become limited to paid access
Gemini 2.5 Flash: balances speed and quality, API ($0.30/$2.50 per 1M), keeps a Free Tier but with daily limits
Gemini 2.5 Flash-Lite: cheapest, suitable for high-volume calls ($0.10/$0.40 per 1M)
Gemini 3.1 Flash-Lite (2026/3 preview): a lightweight version of the 3 series, suitable for real-time applications
Selection logic: for everyday chat, Flash or Flash-Lite is enough; to switch to Deep Research, complex reasoning, and multimodal tasks, use Pro; for API developers, choose dynamically based on task complexity—using different model tiers for different steps within the same app can save costs.
Gemini CLI and Jules: Google’s two-track programming agents
Google offers two levels of programming agents, aimed at “interactive real-time” and “asynchronous background execution,” respectively:
Gemini CLI: terminal interface, similar to Anthropic Claude Code or OpenAI Codex CLI—can read and write files in real time, run shell commands, and integrates with local git
Jules: Google’s asynchronous programming agent, runs on Google cloud VMs—handles multi-file modifications, writes tests, fixes bugs, and produces PRs; supports GitHub integration and audio changelogs
Jules is powered by Gemini 2.5 Pro and fits workflows like “hand off a task, let the agent run on its own, then notify you when it’s done.” Gemini CLI fits “interactive development where I guide while I watch.” Both can be used together: Jules runs long tasks, while CLI handles real-time adjustments.
Veo 3.1: video generation, including native audio
Veo 3.1 is Google DeepMind’s video generation model launched in October 2025. By 2026, it’s been stable for Gemini subscribers. Core specifications:
Video length: 8 seconds per clip
Resolution: 720p, 1080p, and 4K options
Audio: native synchronized generation (no separate dubbing needed)
Control: can specify the first frame and the last frame, enabling precise control over the camera start and end points
Veo 3.1 Lite: costs less than 50% of Veo 3.1 Fast, with similar quality—suited for large-scale production
For users in Taiwan, Veo 3.1’s “native audio” is the key difference versus competitors like Sora 2 and Runway—no post-production dubbing required; it generates complete short videos directly. Common scenarios include community short-form videos, product demos, and quickly validating ad scripts.
NotebookLM: a research and data organization assistant
NotebookLM turns uploaded materials (PDFs, Google Docs, websites, video, and audio) into a conversational knowledge base, and answers will cite specific sources. Two key upgrades in 2026:
Deep Research: given a topic, NotebookLM automatically browses hundreds of websites and produces cited, structured research reports (alongside Fast Research—choosing based on task depth)
Multi-file type support: besides PDF and Docs, it adds more formats to lower the barrier for integrating data
Audio Overview: turns uploaded materials into a two-person podcast-style conversation; Google One AI Premium users can enjoy 5× the generation quota
NotebookLM is especially useful for students, researchers, and knowledge workers—it addresses the pain point of having data scattered across multiple files and taking a long time to organize. Deep Research competes directly with Perplexity Pro and ChatGPT Deep Research.
Workspace and Chrome integration: Gemini permeates Google’s existing products
The biggest advantage of Gemini is its integration across Google’s existing product ecosystem:
Gmail: draft replies, organize long emails, and summarize meeting invitations
Docs: auto-writing, summarizing long-form text, and suggesting rewrites
Sheets: natural-language queries, automatic table building, and data analysis
Search: AI Overviews provide answers directly above search results
Chrome: sidebar and tab overviews, organizing browsing materials
Android: native mobile integration and a voice assistant
Gemini in Google Cloud (Vertex AI): enterprise APIs and managed environments
“Integrating into users’ existing workflows” is the biggest structural difference between Gemini and ChatGPT/Claude—Google users don’t have to jump to a new platform; Gemini appears inside the apps they use every day. For Workspace enterprise customers, Gemini is an added add-on, so there’s no need to switch productivity suites.
Gemini subscription plans: Free vs Google One AI Premium vs Business / Enterprise
Plan Monthly Fee Main Differences Free $0 Gemini 2.5 Flash and Flash-Lite have limited quotas, basic conversation and image generation Google One AI Premium (Advanced) $19.99 Gemini 2.5 Pro full access, Deep Research, Veo 3.1, 1,000 AI credits/month, Jules, Gmail/Docs Gemini, Code Assist + higher-tier CLI quota, NotebookLM 5× audio; available for US subscribers Gemini 3.1 Pro Workspace Business (add-on) $14/user Workspace Business with Gemini integration; enterprise data not used to train Workspace Enterprise (add-on) $30/user SSO, compliance certifications, customizable retention period, maximum usage limits
For individual users, Google One AI Premium $19.99 directly targets ChatGPT Plus $20, and includes Gemini’s full features plus 2TB of Google Drive and other Google One benefits. Heavy developers may consider Vertex AI’s usage-based billing. For enterprise Workspace users, the Business add-on is the most natural upgrade path within the Workspace ecosystem.
Gemini privacy and data policy: personal data handling under Google account integration
Gemini’s privacy rules align with Google account policies, but different plans handle data differently:
Personal Gemini accounts (Free / Advanced): conversation data may be manually reviewed to improve the service by default; users can turn it off in “Gemini Apps Activity”
Workspace Business / Enterprise: conversations and data “won’t be used to train Gemini models,” which is contractually promised
Vertex AI (enterprise API): customer data is fully isolated, and models are not trained by default
Google Cloud hosting: optional data residency selection, including Asia-Pacific regions such as Taiwan, Japan, and Singapore
For Taiwan individual users handling sensitive data, the recommendation is:
Turn off “manual review” and “save conversations” in Gemini Apps Activity
or use Workspace company/organization accounts to obtain contract-level guarantees
For highly regulated scenarios like finance and healthcare, consider Vertex AI and specify Asia-Pacific data residency
Conversation history management: Gemini can export conversations at any time (Google Takeout integration), delete individual conversations, or turn off automatic saving. Even when automatic saving is turned off, conversations will still be retained on Google’s side for 72 hours for security and quality reviews, and then permanently deleted.
Gemini vs ChatGPT vs Claude: concise comparison
In 2026, the relative positioning of the three models:
Gemini: strongest integration (Workspace, Search, Android), cheapest API (Flash-Lite $0.10/$0.40), video generation is a strength (Veo 3.1 includes native audio)
ChatGPT: highest consumer market share, widest product line (Codex, Sora, Operator—complete), Codex is the hottest programming agent right now
Claude: strict instruction following, long context (1M), Claude Code has a strong reputation in the developer community, and Anthropic has the most complete enterprise compliance integration
Selection logic: heavy Workspace users choose Gemini (deepest integration); those who prefer the widest product line and creative tools choose ChatGPT (Sora, Operator—complete); serious developers and long-document work choose Claude (instruction following + context). For a detailed breakdown, see the full comparison of ChatGPT vs Claude vs Gemini.
Frequently Asked Questions (FAQ)
Does Gemini require a subscription? What can the free version do?
No. The free version can use Gemini 2.5 Flash and Flash-Lite (daily limited quotas), basic conversations, and image generation. But Gemini 2.5 Pro, Deep Research, and Veo 3.1 require a Google One AI Premium subscription. For most individual users, $19.99 is enough.
Which is better value: Google One AI Premium or ChatGPT Plus?
The prices are almost the same ($19.99 vs $20)—choose based on your workflow. If you heavily use Gmail/Docs/Sheets and want integration inside Workspace: Gemini Premium. If you heavily use Codex for programming, need Sora videos, and want Operator browser agents: ChatGPT Plus. Some people subscribe to both.
What’s the difference between the Gemini API and the Gemini App?
Gemini App is the chat interface for end users; it’s unlimited per month by subscription (with usage limits). Gemini API is billed by tokens and is for developers integrating into their own applications. Most developers use both: the API connects to their own tools, and the App is for everyday chat.
Can I use Veo 3.1 in Taiwan?
Yes. Gemini isn’t region-restricted in Taiwan; Veo 3.1 is available to Google One AI Premium subscribers, and API users can also use it via Vertex AI.
Which is better: Jules vs OpenAI Codex vs Anthropic Claude Code?
Each has strengths. Jules is strongest in “asynchronous cloud execution”—after you hand off a task, you don’t need to watch; it’s suitable for long PRs. Codex is strongest for OpenAI ecosystem integration (Sora, Operator). Claude Code is often the developers’ top pick for strict instruction following and terminal multi-session workflows. If your budget allows, you can try each for a month and see which better fits your workflow.
What’s the difference between Gemini 3.1 Pro and 2.5 Pro?
3.1 Pro is Google’s flagship and performs best on complex reasoning, Deep Research, and long-context tasks. 2.5 Pro is the API-focused mainstay, widely open, and cheaper. For new projects, you can directly use 3.1 Pro or 2.5 Pro (depending on needs)—there’s no need to keep older versions.
This article, “Gemini Complete Guide 2026: Google’s full AI product lineup, subscription plans, and privacy policy—everything in one place,” first appeared on Lian News ABMedia.
