Nano Banana 2.5: What We Know
Nano Banana 2.5 is Google's rumored next image generation model. As of October 4, 2026 it has not been released — no Google announcement exists. Two signals point to it being close: traces of a "Nano Banana 2.5 Flash" string found in Google Flow code in late September, and an anonymous model nicknamed "Spicy Mayo" performing strongly on LMArena that testers speculate is Google's. Google's shutdown of the legacy Imagen API on October 2, 2026 also cleared the runway. This page is updated as facts land.
When will Nano Banana 2.5 be released?
Unknown — Google has not confirmed the model exists. Context for a guess: Nano Banana 2 launched February 26, 2026, roughly seven months after the original Nano Banana, and "Flash"-tier variants have historically arrived weeks after their base model. Treat any specific date you see online as speculation unless it comes from Google.
Is "Spicy Mayo" the same as Nano Banana 2.5?
Maybe — that is a rumor, not a confirmed mapping. "Spicy Mayo" is the nickname of an anonymous model tested on LMArena (Google models have appeared there under codenames before: the original Nano Banana itself was unmasked the same way). Similar timing is not an identity proof. Until Google announces, "Spicy Mayo = Nano Banana 2.5" stays in the rumor column.
What is expected to change vs Nano Banana 2?
- Better hand anatomy and storyboarding with structured (JSON) prompts — attributed to the rumored Flash variant in AI-community podcasts.
- A "Flash" tier pointing at Google's usual pattern: faster and cheaper than the base model.
- Filling the gap left by the Imagen API shutdown (Oct 2, 2026).
For a grounded look at what the current state of the art already does, see FLUX 3 vs Nano Banana 2 — FLUX 3 (Black Forest Labs, Oct 1, 2026) is the newest actually-released model this week.
Timeline (confirmed vs rumor)
| Date | Event | Status |
|---|---|---|
| Oct 2, 2026 | Google shuts down Imagen API; users directed to migrate to Nano Banana models | Confirmed |
| Late Sep 2026 | Traces of a 'Nano Banana 2.5 Flash' string found in Google Flow code | Rumor |
| Sep 2026 | Anonymous model 'Spicy Mayo' appears on LMArena; multiple testers speculate it is Google's next image model (possibly Nano Banana 2.5) | Rumor |
| Feb 26, 2026 | Nano Banana 2 launches as Gemini 3.1 Flash Image | Confirmed |
While you wait, generate with this week's newest released model:
Try the FLUX 3 GeneratorLast updated: October 4, 2026. We update this page within a day of any confirmed Google announcement.