Gemini Pro

weights

closed

data

closed

code

closed

license

Proprietary(API-only)

Google files Gemini under API and app access and lists Gemma separately as its open models, so the vendor draws the closed line itself. The Gemini API terms bar extracting or replicating the underlying models, including parameter weights, and the current Pro release, Gemini 3.1 Pro, is offered the same way.

• https://ai.google.dev/gemini-api/terms recorded 2026-09-29

  Gemini API Additional Terms state "You also may not attempt to reverse engineer, extract or replicate any component of the Services", including "parameter weights".

• https://deepmind.google/models/gemini/ recorded 2026-09-29

  DeepMind's Gemini page lists "Gemini 3.1 Pro" with the line "Best for complex tasks and bringing creative concepts to life" and "3.5 Pro coming soon", and files Gemma separately under "Open models"; no weight download is offered for Gemini.

Gemini Pro is offered through the Gemini API, Google AI Studio, the Gemini app and Google's enterprise agent platform. Google publishes no per-model usage or user figure for Pro, so this reading is a judgment from the surfaces it powers rather than a measured count.

• https://deepmind.google/models/gemini/ recorded 2026-08-13

  Pro tier offered across the Gemini app, Google AI Studio, the Gemini API and Vertex AI; no per-model usage or user figure published

Gemini 3.1 Pro is still the current Pro release, with 3.5 Pro announced as coming soon, so the score reads it. On the Artificial Analysis index it sits above the median but far short of the leading group, and behind Google's own current Flash model, so it scores level with Gemini Flash rather than above it.

• https://ai.google.dev/gemini-api/docs/models recorded 2026-10-08

  Gemini API models page lists "Gemini 3.8 Flash Our most intelligent Flash model" and "Gemini 3.5 Flash Our legacy Flash model", and lists "Gemini 3.1 Pro" (gemini-3.1-pro-preview) as the current Pro model, marked Preview.

• https://artificialanalysis.ai/leaderboards/models recorded 2026-10-08

  The leaderboard's embedded model records, ranked by intelligenceIndex, put Claude Opus 5.5 (Max) first at 57.62, then Claude Sonnet 5.5 (Max) 56.0, Claude Fable 5.1 (Max) 53.35, GPT-6 Astra (Max) 52.67, Gemini 4 Argon (High) 52.56, GPT-6.1 Sol (Max) 51.83 and Muse Spark 1.3 (Max) 48.09 among models not marked deprecated; Grok 4.7 (Xhigh) follows at 46.45, Gemini 3.8 Flash (High) at 40.93, K2 Horizon 375B A23B at 30.5 and Gemini 3.1 Pro Preview at 29.72. The digest drifts between fetches because the page carries live pricing and throughput figures.

• https://artificialanalysis.ai/models/gemini-3-1-pro-preview recorded 2026-10-08

  Gemini 3.1 Pro Preview "scores 30 on the Artificial Analysis Intelligence Index, placing it above average among comparable models (median: 26)"; Intelligence rank "# 95 / 225"; no deprecation banner.

• https://deepmind.google/models/gemini/pro/ recorded 2026-10-08

  The Gemini Pro page is titled "Gemini 3.1 Pro" and carries "Gemini 3.5 Pro coming soon" above "Gemini 3.1 Pro Best for complex tasks and bringing creative concepts to life".