Gemini 3.1 Pro vs Gemini 3 Flash vs Gemini 3.1 Flash-Lite: Model Comparison (2026)Compare Gemini 3.1 Pro, Gemini 3 Flash, and Gemini 3.1 Flash-Lite in 2026. Context, pricing tiers, benchmarks, and use cases. Verified from ai.google.dev.14 min readEvery Gemini Model, Explained
Which Gemini model to pick and why: Gemini 3.1 Pro, Gemini 3 Flash, Gemini 3.1 Flash-Lite, what each one is built for, the 1 million token context window they share, and what the Free, Google AI Pro and AI Ultra plans include. Each guide is verified against Google's own documentation at its date.
Model facts are Google's published specs at each article's date. AI Toolbox works with every Gemini model and lets you file conversations by model in folders.
Start here
The three guides that answer the model question
The lineup comparison, the context and token limits, and what each plan costs.
Gemini 3.1 Pro vs Gemini 3 Flash vs Gemini 3.1 Flash-Lite: Model Comparison (2026)Compare Gemini 3.1 Pro, Gemini 3 Flash, and Gemini 3.1 Flash-Lite in 2026. Context, pricing tiers, benchmarks, and use cases. Verified from ai.google.dev.14 min read
Gemini Context Window & Token Limits (2026)Gemini 3.1 Pro, 3 Flash, and 3.1 Flash-Lite all ship a 1 million token context window in 2026. See max output, token limits, and what 1M tokens holds.6 min read
Gemini Pricing: Free, AI Pro & Ultra Plans (2026)Google AI plans in 2026: Free, AI Pro at $19.99/mo, and AI Ultra at $99.99 or $199.99/mo. Compare Gemini 3.1 Pro access, limits, and API costs.7 min readAll 3 guides
Every Gemini guide, grouped by what you are trying to do
Each group opens with the native Gemini answer, then the guides that go deeper. Newest first inside a group.
Current lineup
Gemini 3.1 Pro, Gemini 3 Flash and Gemini 3.1 Flash-Lite compared on context, pricing tiers, benchmarks and use cases.
Plans, limits and context
What Free, AI Pro and AI Ultra include, and how much a 1 million token window actually holds.
Gemini Pricing: Free, AI Pro & Ultra Plans (2026)Google AI plans in 2026: Free, AI Pro at $19.99/mo, and AI Ultra at $99.99 or $199.99/mo. Compare Gemini 3.1 Pro access, limits, and API costs.7 min read
Gemini Context Window & Token Limits (2026)Gemini 3.1 Pro, 3 Flash, and 3.1 Flash-Lite all ship a 1 million token context window in 2026. See max output, token limits, and what 1M tokens holds.6 min readSame workflows, every AI
Guides for the other AI Toolbox modules
One extension, four modules, each with its own guide collection shaped by what that platform lacks.
- ChatGPT guidesFolders, full-text search, bulk actions, prompt chains and export.
- Gemini guidesYou are hereFull-text search with role and date filters, folders and four export formats.
- Claude guidesSearch, folders, bookmarks, artifact library and PDF export.
- Grok guidesSearch, folders, Smart Tags and export on grok.com and X.
FAQ
Quick answers before you read
What Gemini models are available in 2026?
Google's current lineup is Gemini 3.1 Pro, Gemini 3 Flash, Gemini 3.1 Flash-Lite. Gemini 3.1 Pro is the most capable model for complex reasoning, long documents and agentic coding; Gemini 3 Flash gives frontier-class performance at a fraction of the cost; Gemini 3.1 Flash-Lite is the lowest-cost option. The 2.5 generation is deprecated.
Which Gemini model should I use?
For hard reasoning, long context and coding, Gemini 3.1 Pro. For everyday and high-volume work that still needs strong quality, Gemini 3 Flash. For the lowest cost per token, Gemini 3.1 Flash-Lite. All three share a 1 million token context window, so the choice is about capability and price rather than how much fits.
What do the Gemini plans cost?
Gemini has a Free tier, Google AI Pro at $19.99 a month, and Google AI Ultra at $99.99 or $199.99 a month, with the higher tiers unlocking more Pro-model usage, Deep Research capacity and Workspace features. The pricing guide above lists what each plan includes and the API costs per model, as of its publication date.
Does the model I use change how AI Toolbox works?
No. AI Toolbox is a browser-extension layer on top of gemini.google.com, so search, folders, bookmarks, export and the prompt library behave the same with Gemini 3.1 Pro, Gemini 3 Flash, Gemini 3.1 Flash-Lite, and all future Google Gemini models. It does not replace your Google plan or give access to a model your plan does not include. The Context Meter reads the window of the model you are on.
Does AI Toolbox work in Edge, Brave or Firefox?
It installs from the Chrome Web Store into any Chromium browser: Chrome, Edge, Brave, Opera and Arc. There is no Firefox version.
Pricing
Free to start, one lifetime price if you stay
Every guide works on the free plan. Premium removes the caps on one platform; All Access covers all four. Not an AI subscription: you keep using your own Gemini account.
Free
$0forever
- 2 root folders, 5 search results per query, unlimited TXT export
- All four modules, no account needed
Gemini Premium
$9.99/ month, or $99 once
- Unlimited folders, search results, bookmarks and exports
- Lifetime pays for itself in under 10 months
All Access LifetimeBest value
$199once, all four modules
- ChatGPT, Gemini, Claude and Grok, every Premium feature
- Saves $197 against four separate lifetimes
- 14-day money-back on a first purchase
- Conversations stay in your browser
- Chrome Web Store listing, 4.6/5
Put the guides to work
Add AI Toolbox and try the first guide in two minutes
Install once, then folders, full-text search and export appear inside Gemini. The free plan has no time limit.