AI Agent Index
ByHeather MacAvelia·Independently reviewed·Published Apr 30, 2026·Updated Oct 4, 2026
Independently verified against live vendor data on Sep 22, 2026.

Google's flagship AI assistant with Gemini 3.6 Flash, 3.1 Pro, Deep Research, Deep Think and Gemini Spark. Free tier available. AI Plus $4.99/mo, Pro $19.99/mo, Ultra from $99.99/mo.

How we scored it

Autonomy

4/5

Integrations

5/5

Pricing clarity

5/5

Evidence

5/5

Setup

5/5

The facts

From

$4.99

freemium ↗

GitHub

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Stars

G2

4.4 / 5

621 reviews ↗

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Gemini is Google's flagship conversational AI assistant and the parent product of a family that includes Gemini Deep Research, Gemini Spark, Gemini CLI, Jules and Gemini Notebook, formerly NotebookLM. It runs on the current Gemini model line. Gemini 3.6 Flash was introduced on 21 July 2026 as the upgraded everyday model available to all users. Gemini 3.1 Pro is available with varying access on the free tier and higher access on paid plans, Gemini Omni is Google's model for video creation, and Deep Think is offered first to Google AI Ultra subscribers. Capabilities span conversational chat and multimodal input and output across text, image, audio and video. Google's help center lists the context window as 32k tokens without a plan, 128k tokens on Google AI Plus and 1 million tokens on Google AI Pro and Ultra. Deep Research is the built-in research agent, running autonomous multi-source report generation, and paid plans also raise access to Deep Search in Google Search's AI Mode. Creative features cover image generation and editing via Nano Banana Pro, video generation via Veo 3.1 and Gemini Omni, and music generation via Lyria 3.5. Gemini Live provides voice, Canvas provides collaborative editing, and Gems provides custom AI experts, alongside Gemini inside Gmail, Docs, Sheets, Slides and Drive. Google Flow provides an AI creative studio with tiered credits. Gemini Spark is a personal AI agent that runs tasks in the background and reached the macOS app on 30 June 2026. The Gemini app also runs on Windows 10 or later from 10 September 2026. Google Antigravity is a separate agentic development platform. Gemini's Model Context Protocol support sits in the Gemini API rather than in the consumer app. Google hosts a public first-party MCP server at gemini-api-docs-mcp.dev, the Gemini Docs MCP, which a coding agent installs with npx add-mcp and which exposes a documentation search function returning live API definitions and integration patterns. Google pairs the server with a gemini-api-dev skill for coding assistants. In the other direction, the Interactions API can connect to remote MCP servers over Streamable HTTP, taking a server name and url in the tools configuration, and Google's Deep Research agent in the same API accepts remote MCP servers as a tool. Google's Interactions API documentation, updated in September 2026, states that Gemini 3 models do not yet support remote MCP and that support is coming, so remote MCP currently runs on the Gemini 2.5 models and the Deep Research agent. Pricing has four consumer tiers, published in full on Google's own subscriptions page. Free with a Google account provides Gemini 3.6 Flash, varying access to 3.1 Pro, image generation and editing, Deep Research, Gemini Live, Canvas, Gems, limited Google Flow access and Gemini Notebook, with 15GB of storage. Google AI Plus at $4.99/month adds 2x higher usage limits than Free, video generation, Daily Brief, 200 Flow credits and 400GB of storage. Google AI Pro at $19.99/month adds 4x higher usage limits than Free, 1,000 Flow credits, higher Jules limits, Gemini in Chrome with auto browse and 5TB of storage. Google AI Ultra starts at $99.99/month for 5x Pro usage limits, with a $199.99/month option at 20x, cloud storage starting at 20TB, Project Genie and first access to Deep Think and Gemini Spark in select countries. Usage limits in the Gemini app are compute-based, refresh every 5 hours up to a weekly limit, and can be extended by buying AI credits. The subscriptions page lists every tier at a monthly rate, and Google One also sells some Google AI plans on annual billing. For organizations, Google has included Gemini in its Google Workspace business plans since January 2025, when it dropped the separate Gemini Business and Gemini Enterprise add-ons. The Business tab of the same subscriptions page now sells Gemini Enterprise, a separate agent platform for companies, from $21 per seat per month. Google's SOC 2 Type II, ISO 27001 and ISO 42001 scope documents each name the Gemini app. HIPAA is the exception: Google's HIPAA Included Functionality list covers the Gemini app, excluding Gemini in Chrome, and the Gemini Mac app for Workspace customers under a Business Associate Agreement, so it does not extend to the consumer Google AI plans. Gemini is best for people and teams who already work in Gmail, Docs and Drive and want one assistant across research, writing and creative media. Teams standardized on Word, Excel, Outlook and Teams should consider Microsoft 365 Copilot, which works inside those Microsoft apps. Several premium features are geographically limited: Google states Deep Think and Gemini Spark reach Ultra subscribers in select countries first, and Chrome auto browse is rolling out in preview to Pro and Ultra subscribers in the U.S., so subscribers elsewhere get a narrower feature set than the plan page lists. Q3 2026 state: Gemini 3.6 Flash shipped 21 July 2026 as the everyday model for all users. The Gemini app reached Windows on 10 September 2026, and on 19 August 2026 Google added a student hub with one year of Google AI Pro at no cost for eligible US college students. Google AI Ultra sells as two sub-tiers at $99.99/month for 5x limits and $199.99/month for 20x. Remote MCP in the Interactions API does not yet cover Gemini 3 models.

Pricing

freemium · $4.99/mo

View pricing ↗

Segment

Business

Setup

easy

Verified

Sep 22, 2026

Transparency

Public

Contract

Monthly or Annual

Data training

Opt-out

Human in loop

Not required

Capabilities

autonomouscontent-creationdata-analysiscitationsresearchmultilingualvisionvoice

Pros & Limitations

Editorial assessment

Pros

  • ✓The free tier includes Gemini 3.6 Flash, varying access to Gemini 3.1 Pro, Deep Research, Gemini Live, image generation and editing, Canvas, Gems and Gemini Notebook at no cost, with 15GB of Google storage.
  • ✓Creative tools cover video generation with Veo 3.1 and Gemini Omni, Nano Banana Pro image generation and editing, Lyria 3.5 music generation, Gemini Live voice and the Google Flow creative studio, with Flow credits included from Google AI Plus upward.
  • ✓Google hosts a first-party Gemini Docs MCP server for coding agents, and the Gemini API's Interactions API and Deep Research agent can connect to remote MCP servers for external tools.

Limitations

  • –Some premium features are geographically limited. Google states Deep Think and Gemini Spark reach Ultra subscribers in select countries first, and Chrome auto browse is in a U.S. preview for Pro and Ultra, so subscribers elsewhere get a narrower feature set.
  • –Usage in the Gemini app runs on compute-based limits that factor in the model and features used and refresh every 5 hours up to a weekly cap, so heavy media generation or Deep Research use can exhaust a plan's allowance unless AI credits are bought.
  • –Remote MCP is a developer API feature with a model gap. Google's Interactions API documentation states Gemini 3 models do not yet support remote MCP, so it currently runs on Gemini 2.5 models and the Deep Research agent, and it is not in the consumer chat app.

Technical Details

Deployment
cloudwebmobiledesktop
Model architectureGemini 3.6 Flash / Gemini 3.1 Pro / Gemini Omni / Deep Think
Autonomous rateDeep Research runs autonomous multi-source report generation. Gemini Spark is a personal AI agent that runs tasks in the background in the Gemini app and the macOS app. Gemini in Chrome offers auto browse to complete web tasks, in a U.S. preview for Google AI Pro and Ultra subscribers. Through the Gemini API, the Interactions API and the Deep Research agent can call tools on remote MCP servers, which Google states does not yet work with Gemini 3 models. Google does not publish a platform-average autonomous resolution rate for the Gemini app.
Integrations
Google WorkspaceGmailGoogle DocsGoogle SheetsGoogle SlidesGoogle DriveGoogle SearchGoogle ChromeGemini NotebookGemini Code AssistGemini CLIJulesVertex AIGoogle CloudMCP
Security
SOC 2 Type IIISO 27001ISO 42001GDPRHIPAA

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Rating

4.7/ 5
★★★★★

Editorial score

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Rated 4.7 ★Category Leader · Q4 2026MCP Server VerifiedTransparent PricingListed 2026
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