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Google: Nano Banana (Gemini 2.5 Flash Image)

google/gemini-2.5-flash-image

BenchmarksCompare

Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation, edits, and multi-turn conversations. Aspect ratios can be controlled with the image_config API ParameterOpens in new tab

Modalities
In / Out Price
$0.30 / $30per 1M
Context
33K
Released
Oct 7, 2025
Knowledge Cutoff
Jan 2025
BenchmarksCompare
PlaygroundBenchmarksProvidersPricingPerformanceUptimeAppsActivityDocumentationFAQExplore

Playground

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for Google: Nano Banana (Gemini 2.5 Flash Image) (Artificial Analysis and Design Arena)
SourceBenchmarkScore
Artificial AnalysisNano Banana (Gemini 2.5 Flash Image) Elo985
Design ArenaGemini 2.5 Flash Image Gen (Nano Banana) Models Arena Graphic Design Elo1167
Design ArenaGemini 2.5 Flash Image Gen (Nano Banana) Models Arena Image Elo1183
Design ArenaGemini 2.5 Flash Image Gen (Nano Banana) Models Arena Logo Elo1165

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

API

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

Not currently available through EU in-region routing. In-region routing docs

Documentation

Guides, cookbooks, blog posts, and tools for building with Google: Nano Banana (Gemini 2.5 Flash Image) on OpenRouter.

  • Nano Banana API: Edit Images with Gemini in CodeBlog post
  • Gemini 2.5 Flash API - Pricing, Quickstart & Provider ComparisonBlog post
  • The First-Ever Image Model Is Up on OpenRouterBlog post

Explore more models

AI Models with Vision: Multimodal LLMs for Image UnderstandingCollectionImage Generation ModelsCollectionAI Model RankingsRankingImage Model RankingsRanking
End-to-end latency
$0.30$0.30$30.00$2.50$0.03$0.1015.60s
100.00%
End-to-end latency
15.60s

P50, best provider

Uptime (3d)The model was reachable. Request routed to a provider.
100.00%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
99.98%

Availability over the last 3 days

Last 72 hours
Availability 99.98%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
99.96%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

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Frequently asked questions

Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation, edits, and multi-turn conversations. Aspect ratios can be controlled with the image_config API Parameter

The Nano Banana (Gemini 2.5 Flash Image) documentation on OpenRouter includes the Nano Banana API: Edit Images with Gemini in Code blog post, the Gemini 2.5 Flash API - Pricing, Quickstart & Provider Comparison blog post, and the The First-Ever Image Model Is Up on OpenRouter blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

Nano Banana (Gemini 2.5 Flash Image) costs $0.30/M input tokens and $2.50/M output tokens, with separate rates for Cache Read at $0.03/M tokens, Cache Write at $0.08333/M tokens, Image Input at $0.30/M tokens, Image Output at $30.00/M tokens, Input Audio at $1.00/M tokens, and Input Audio Cache at $0.10/M tokens.

Nano Banana (Gemini 2.5 Flash Image) has a 32,768 token context window. It supports up to 8,192 completion tokens.

No. Nano Banana (Gemini 2.5 Flash Image) does not accept tools, so function calling is unavailable. It also supports structured outputs via a JSON schema in response_format.

Nano Banana (Gemini 2.5 Flash Image) accepts images and text as input and returns images and text. Up to 3 reference images can be attached to one request for image editing.

Gemini 4 Argon, Nano Banana 2.1, Gemini 3.8 Flash and 26 more are other text models from Google.

Nano Banana (Gemini 2.5 Flash Image) was released on October 7, 2025. Its knowledge cutoff is January 31, 2025.