AI Agent Index
ByHeather MacAvelia·Independently reviewed·Last verified Jul 3, 2026

Google's flagship conversational AI with Gemini 3.5 Flash, 3.1 Pro, Deep Research, Deep Think, and MCP. Free tier; AI Plus $5/mo, Pro $20/mo, Ultra from $100/mo.

How we scored it

Autonomy

4/5

Integrations

5/5

Pricing clarity

5/5

Evidence

5/5

Setup

5/5

The facts

Gemini is Google's flagship conversational AI assistant and the parent product family alongside Gemini Deep Research, Gemini CLI, NotebookLM, and Jules. It runs on the latest Gemini model family including Gemini 3.5 Flash for free-tier Auto routing, Gemini 3.1 Pro on paid tiers, Gemini Omni and Omni Flash for creative and agentic workflows, and Deep Think for complex reasoning on Ultra tiers only. Capabilities span conversational chat with a 1M token context window on Pro and Ultra tiers, multimodal input and output across text, image, audio, and video, Deep Research for multi-source report generation, Deep Search for agentic browsing, image generation and editing via Nano Banana Pro, video generation via Veo 3.1, music generation, voice via Gemini Live, Canvas for collaborative editing, and native integration across Gmail, Docs, Sheets, Slides, and Drive. Google Flow provides an AI creative studio for cinematic video and story creation with tiered credits. Google Antigravity is a new agentic development platform for building and deploying autonomous agents. Jules is an autonomous coding agent available on Pro and Ultra tiers. Pricing has four consumer tiers in USD. Free with a Google account provides Gemini 3.5 Flash, varying access to 3.1 Pro, Deep Research, Gemini Live, Canvas, Gems, image generation, limited Google Flow credits, and 15GB storage. Google AI Plus at $5/month provides 2x usage limits versus free, 200 Google Flow credits, Nano Banana Pro in Search, Gemini in Gmail and Docs, AI Inbox, Daily Brief, and 400GB storage. Google AI Pro at $20/month provides 4x usage limits, 1,000 Google Flow credits, Deep Search, Google Antigravity access, Jules, Chrome auto browse (US only), YouTube Premium Lite, Google Home Premium, and 5TB storage. Google AI Ultra starts at $100/month (5x Pro limits, 10,000 Google Flow credits, 20TB) with a $200/month tier (20x Pro limits, 25,000 credits, 30TB) adding Deep Think, Gemini Spark (coming soon), YouTube Premium, Google Home Premium Advanced, and $100/month in Google Cloud credits. For organizations, Google discontinued standalone Gemini Business and Enterprise Workspace add-ons in early 2026. Gemini AI features are now bundled into Workspace Business Standard, Business Plus, and Enterprise tiers at no additional charge. API access via the Gemini Developer API offers Gemini 3.1 Pro, Flash, and Flash-Lite at competitive per-token rates with batch mode at 50% off and cached input at approximately 10% of cache-miss rate. Gemini is not the right choice for organizations standardized on Microsoft 365 where Microsoft 365 Copilot provides deeper native integration. Teams needing the strongest reasoning for complex multi-step work should evaluate Claude or ChatGPT, as Claude Opus 4.8 and OpenAI's top reasoning models lead on dense reasoning benchmarks. Several premium features remain locked to US and English only, including Chrome auto browse, Deep Search in AI Mode, and Gemini Spark. International Ultra subscribers pay $100 to $200/month for a reduced feature set compared to US users. Q3 2026 state: Google AI Plus entry price dropped from $8 to $5/month. Google AI Ultra now offers two sub-tiers at $100/month (5x) and $200/month (20x). Google Flow creative studio and Google Antigravity agentic development platform are live. Music generation, Chrome auto browse, and AI Inbox in Gmail added as capabilities. Gemini Spark announced for Ultra (coming soon). G2 shows 492 reviews at 4.4 as of July 2026.

Pricing

freemium · $5/mo

View pricing ↗

Segment

b2b

Setup

easy

Verified

Jul 3, 2026

Transparency

Public

Contract

Month-to-month

Data training

Opt-out

Autonomy

Autonomous

Capabilities

autonomouscontent-creationdata-analysiscitationsresearchmultilingualvisionvoice

Pros & Limitations

Editorial assessment

Pros

  • Free tier is the most capable among major AI assistants, providing Gemini 3.5 Flash with Auto routing, Deep Research, Gemini Live, image generation, Canvas, and Gems at no cost.
  • Strongest multimodal capabilities in the category with Veo 3.1 video generation, Nano Banana Pro image generation, music generation, Gemini Live voice, and Google Flow creative studio for cinematic scene and story creation.
  • Cheapest API per token at the top tier with Gemini 3.1 Pro roughly 2.5x cheaper than GPT-5.5, batch mode at 50% off, and cached input at approximately 10% of cache-miss rate for meaningful TCO advantage at production scale.

Limitations

  • Premium agentic features locked to US and English only. Chrome auto browse, Deep Search in AI Mode, and Gemini Spark are restricted to US users. International Ultra subscribers pay $100 to $200/month for a meaningfully reduced feature set.
  • Workspace Gemini repackaged in early 2026 with standalone Gemini Business and Enterprise add-ons discontinued. AI is now bundled into Workspace plans at higher per-seat prices, creating a more expensive renewal path for existing customers.
  • Reasoning quality lags behind Claude Opus 4.8 and OpenAI's top reasoning models for complex multi-step work. Gemini 3.1 Pro is competitive but not category-leading on dense reasoning benchmarks for legal review, complex coding, or financial modeling.

Technical Details

Deployment
cloudwebmobiledesktop
Model architectureGemini 3.5 Flash / Gemini 3.1 Pro / Gemini Omni / Deep Think
Avg setup time1 minute (sign in with Google account at gemini.google.com)
Autonomous rateDeep Research runs fully autonomous multi-source report generation. Gemini Agent (US and English only) handles agentic tasks autonomously. Project Mariner browser automation handles up to 10 simultaneous tasks. Deep Search provides agentic browsing. Google Antigravity is a new agentic development platform. Gemini does not publish a platform-average autonomous resolution rate.
MCP compatibleYes
Integrations
Google WorkspaceGmailGoogle DocsGoogle SheetsGoogle SlidesGoogle DriveGoogle SearchGoogle ChromeNotebookLMGemini Code AssistGemini CLIJulesVertex AIGoogle CloudProject MarinerMCP
Security
SOC 2 Type IIISO 27001ISO 42001GDPRHIPAAFedRAMP

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Rating

4.7/ 5

Editorial score

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Recognition

Rated 4.7 ★Transparent PricingListed 2026
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Industries

B2BB2CEnterpriseSMBAgenciesMarketingEducationDevToolsStartups

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