Benchmark Almanac

Human SxS image generation Elo (Google)

In use

Google compares generated images side by side and converts human preferences into Elo ratings.

The Gemini 3.1 Flash Image and Nano Banana 2.1 model cards report internal human side-by-side image generation ratings.

Made by
Google DeepMind
Released
February 2026
Kind
Image generation and editing
Level
Everyday
Scored
Ranked by votes
Answers
Open-ended
Tasks
Kept private
Last in a launch post
October 2026
Last model added
October 2026
2
Models scored in lab cards
1
Launch post lists it, from 1 lab
2
System cards report it, from 1 lab

2 models have ratings here, all from their labs’ own posts

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs. A rating ranks a model only against others rated in the same arena at the same time, so these don’t show who leads.

Bars start at 1,040.

  1. 1 Gemini 3.1 Flash Image (nano-banana-2, Web Search) 1,114
  2. 2 Gemini Nano Banana 2.1 1,050

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 Gemini 3.1 Flash Image (nano-banana-2, Web Search) 1,114 Feb 2026 Lab model card
2 Gemini Nano Banana 2.1 1,050 Oct 2026 Lab model card

Number one over time

Lab claims count from the day the card came out, independent runs from the model’s release.

Google DeepMind
Lab claims 1 leader

Source: Labs’ model cards

Scores over time

All the scores we have, one dot each, so a model tested at several settings appears more than once.

Reported by the lab in its model card
1,040 1,060 1,080 1,100 1,120 2026 1,040 1,060 1,080 1,100 1,120 2026

Source: Labs’ model cards

One lab put it in a launch post in the last six months

Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.

Google DeepMind
DateLaunch postScoreAs the post writes it
Oct 6, 2026 Gemini Nano Banana 2.1 1050 Overall Preference, Thinking

2 system cards report it, from 1 lab

Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.

DateDocumentScoreAs the document writes itSection
Oct 6, 2026 Gemini Nano Banana 2.1 model card 1050 Overall Preference, Thinking Capabilities
Feb 26, 2026 Gemini 3.1 Flash Image (nano-banana-2, Web Search) model card 1114 Infographics (Factuality), Thinking + Text Search + Image Search Capabilities

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