Model comparison
Best AI Image Generator 2026: Which Model Should You Use?
"What's the best AI image generator in 2026?" doesn't have one answer, because the leading models are built for different jobs. Google's Nano Banana Pro and Nano Banana 2, OpenAI's GPT Image 2 and Midjourney's V7 each make a different trade between resolution, aspect ratios, speed, reference handling and text rendering. This is an honest side-by-side: the specs first, then what each is genuinely good at, then which to reach for. Renoise runs all four in one Canvas, so the practical move isn't picking a single winner — it's picking the right model per job.
At a glance
| Nano Banana 2 (Google) | Nano Banana Pro (Google) | GPT Image 2 (OpenAI) | Midjourney V7 (Midjourney) | |
|---|---|---|---|---|
| Resolution | 1K / 2K / 4K | 1K / 2K / 4K | 1K / 2K / 4K | Auto (no selector) |
| Aspect ratios | up to 14 (1:1–8:1) | 10 (1:1–21:9) | 8 (1:1–21:9) | 7 (1:1–16:9) |
| Speed | 15–60s | 20–90s | 20–90s | 30–120s |
| References | — | — | up to 16 images (fusion) | up to 4 images |
| Text rendering | — | ~94% | strong | none |
| Output per job | 1 | 1 | 1 | 4 images |
| Best for | fast, cost-efficient drafts | text-heavy, studio-grade | multi-reference compositing | stylized / artistic |
Every column above is a model Renoise runs today. The numbers are current as of June 2026 — model vendors iterate, so treat speed ranges in particular as typical rather than fixed.
Nano Banana 2 — fast and cost-efficient
Nano Banana 2 (built by Google) is the one to reach for when throughput matters. It outputs 1K, 2K or 4K across up to 14 aspect ratios — the widest set here, spanning 1:1 all the way to 8:1 panoramas — and it tends to return in roughly 15–60 seconds, the quickest of the four in our use.
That speed and cost efficiency make it a good default for early drafts, bulk variations and wide or unusual crops where you want to iterate quickly before committing to a heavier model. If you're exploring a concept rather than finishing it, this is a sensible first stop. See Nano Banana 2 in Renoise for the full spec.
Nano Banana Pro — text rendering and studio-grade output
Nano Banana Pro (also Google) is the studio-grade sibling. It shares the 1K/2K/4K resolution range, runs across 10 aspect ratios (1:1–21:9), and typically takes a little longer — around 20–90 seconds. Its standout is text rendering: in our testing it places legible, well-formed text at roughly a 94% success rate, which is unusually reliable for a diffusion-style image model.
That makes it the natural pick for anything text-heavy — posters, ad creatives, social graphics, packaging mockups, anything where a typo in baked-in copy would sink the asset. If your output needs readable words rendered cleanly, start here. More at Nano Banana Pro in Renoise.
GPT Image 2 — multi-reference compositing
GPT Image 2 (built by OpenAI) is the reference workhorse. It covers 1K/2K/4K, 8 aspect ratios (1:1–21:9) and runs around 20–90 seconds, but its defining capability is multi-reference fusion: a single generation can take up to 16 reference images and blend them, alongside strong text and fine-detail fidelity.
That makes it the model to reach for when you're compositing — pulling a product, a style, a background and a character together into one coherent frame, or holding consistent elements across a set. When the job is "combine these specific inputs," its reference capacity is the widest here. See GPT Image 2 in Renoise.
Midjourney V7 — stylized and artistic
Midjourney V7 (built by Midjourney) is the stylistic one. It doesn't expose a resolution selector — it runs at an automatic resolution — supports 7 aspect ratios (1:1–16:9), takes roughly 30–120 seconds, and returns four images per job so you can pick from a spread. It accepts up to 4 reference images.
Its genuine strength is aesthetic range: distinctive, painterly and stylized output that many creators reach for first when the goal is mood and art direction rather than literal accuracy. The honest trade is that V7 does not render text, so it's not the tool for posters or anything with baked-in copy — pair it with Nano Banana Pro for that. More at Midjourney V7 in Renoise.
Which should you pick?
There's no single answer — match the model to the job:
- Text-heavy posters, ads and graphics → reach for Nano Banana Pro, for its ~94% text-rendering reliability and studio-grade output.
- Multi-reference compositing → reach for GPT Image 2, which fuses up to 16 reference images in one generation.
- Stylized, artistic, mood-driven work → reach for Midjourney V7, for its aesthetic range and four options per job (just not for text).
- Fast and cost-efficient drafts or wide crops → reach for Nano Banana 2, the quickest here with up to 14 aspect ratios.
The structural point worth naming: most image tools lock you into a single model line. Renoise's angle is the opposite — all four of these run in one Canvas, agent-first, so you can switch per shot instead of committing to one. That also keeps costs predictable, with AI images from $0.03 per image. See AI image generation in Renoise for the full picture.