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(opens in new tab)
Modalities
In / Out Price
$0.30 / $2.50per 1M
Context
33K
Released
Oct 7, 2025
Knowledge Cutoff
Jan 2025
Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick — Balanced (price + speed), Nitro (fastest), or Exacto (highest tool-calling accuracy).
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.
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 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.
Scores on standardized evaluations. Higher percentages are better — and rank percentile shows where this model lands among all models on OpenRouter.
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.
Token volume and request traffic to this model over time.
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.
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
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 32,768 completion tokens.
The Nano Banana (Gemini 2.5 Flash Image) endpoint shown on this page does not accept tools, so function calling is unavailable there. 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.
Nano Banana (Gemini 2.5 Flash Image) is served by 2 providers on OpenRouter: Google AI Studio and Google Vertex. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.
Nano Banana (Gemini 2.5 Flash Image) was released on October 7, 2025. Its knowledge cutoff is January 31, 2025.
| $0.30 | $30.00 | $0.30 | $2.50 | $0.03 | $0.10 | 0.46s | 174 tps | ||
| $0.30 | $30.00 | $0.30 | $2.50 | $0.03 | $0.10 | 5.94s | 161 tps |
Throughput
174tok/s
P50, best across providers
Latency
0.46s
P50, best provider
100.00%
99.98%
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 customization options.
