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Imagen 4 Ultra

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Imagen 4 Ultra is a closed-weights image model from Google, released June 2025. Licence: proprietary.

61.4±1.5#35 of 144 image modelsfrom 4 benchmark results across 4 sources

Score within the LMArena text-to-image comparison set only.

$ how it compares

The image models ranked either side of Imagen 4 Ultra, out of 197 with a score, then more from Google.

#modelscorewhereRAMreleased
39Nano Banana (Gemini 2.5 Flash Image) Google62±1api $0.039/image2025-08
40Wan 2.7 Image Alibaba62±2api $0.030/image2026-04
41Imagen 4 Ultra Google61±2api $0.060/image2025-06
42GPT Image 1 OpenAI61±1api $0.042/image2025-04
43Wan 2.6 Text-to-Image Alibaba61±3api $0.030/image2026-01
more from Google
5Nano Banana 2.1 Google81±2api $0.034/image2026-10
9Nano Banana 2 (Gemini 3.1 Flash Image) Google76±1api $0.067/image2026-02
10Nano Banana Pro (Gemini 3 Pro Image) Google76±1api $0.13/image2025-11

see all image models · find the ones that fit your machine

$ what it's good at

text to image▂▅▅▃▄▄█▃▁▂▁▁ #34 of 126 · 94% of its score · 3 tests

Beats Wan 2.7 Image Pro, Wan 2.7 Image here, though they rank higher overall. Trails ERNIE-Image, ERNIE-Image-Turbo, GPT Image 1 here, though they rank lower overall.

testresultvs the others in its rundifficultycountswhy
GenExam (relaxed overall, GPT-5 judge)53.0% ✎▄█▂▂▂▂▆▄·▂·▂ beats 10/16hard · avg 26%▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 55%sharp · at its level
LMArena text-to-image1147.7 ✎▂▂▃▄▇█▄▂▄▂·▂ beats 42/75avg 1027▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 35%typical
Qwen-Image-Bench (Q-Judger, v1)52.0% ✎█▅▅·▅▅█·█··▃ beats 5/17medium · avg 46%▇▇ 3.8%blunt · at its level
other tests1 not in a task · 5.5% of its score
testresultvs the others in its rundifficultycountswhy
Rapidata Benchmark.ai image benchmark (overall Elo)1025.9 ✎▁▁▁▄▂█▃▁▁▂▁▁ beats 23/34avg 875▇▇ 5.5%typical

$ where to run it

Through an API

api · Google Cloud · $0.060/image · cloud.google.com ↗ · price sourceUSD per generated image, Imagen 4 Ultra text-to-image on Google Cloud generative AI (Vertex AI / Gemini Enterprise Agent Platform) pricing; upscaling billed separately. Not the Gemini Developer API (its pricing page no longer lists Imagen). Product: Google Cloud generative AI image generation. API model: Imagen 4 Ultra. Settings: text prompt, one image. Price basis: published list rate. Currency: USD. Google Cloud official pricing page, observed 2026-09-25.

$ how the score was worked out · GenExam: A Multidisciplinary… 55%, LMArena leaderboard dataset 35%, Rapidata/text-to-image-human-… 5% and 1 more

Each result implies a score on its own, after adjusting for how hard its test is and who ran it. The score is their weighted average, with a small pull toward the middle for thinly tested models. Each test's weight is its counts column above; here it's added up by who ran the tests. How it works

sourceresultsshare of the scorelicence
GenExam: A Multidisciplinary Text-to-Image Exam (arXiv v5)1▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 55%CC-BY-4.0
LMArena leaderboard dataset1▇▇▇▇▇▇▇▇▇▇▇ 35%CC BY 4.0
Rapidata/text-to-image-human-preference-6M (Benchmark.ai Image Benchmark) published dataset-card rankings1▇▇ 5%CC-BY-4.0
Qwen-Image-Bench: From Generation to Creation in Text-to-Image Evaluation1▇ 4%CC-BY-4.0
prior · pull toward the middle▇ 1%
weighted average= 61.4

$ improve this page

Update model informationAdd a place to run itAdd a test resultPropose a benchmarkCorrect a benchmark scoreEdit data on GitHub

Use a short GitHub form or edit the data through a pull request. Every number needs a source; here's which ones we can use.

data updated · sources and licences · json