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Favicon for openai

OpenAI: GPT Image 2.5 Sunburst

openai/gpt-image-2.5-sunburst

BenchmarksCompare

GPT Image 2.5 Sunburst is an image generation and editing model from OpenAI, positioned as the precision-oriented tier of the GPT Image 2.5 series. It is suited to detailed creative work where editing accuracy matters more than generation speed, via the dedicated Images API.

Modalities
In / Out Price
$8 / $30per 1M
Context
400K
Released
Sep 9, 2026
BenchmarksCompare
PlaygroundProvidersPricingPerformanceUptimeAppsActivityFAQExplore

Playground

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

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End-to-end latency
$5.00$8.00$30.00$2.0026.24s
100.00%
End-to-end latency
26.24s

P50, best provider

Uptime (3d)The model was reachable. Request routed to a provider.
99.99%
Availability (3d)The model returned inference from any provider. Errors and empty responses count against it.
99.66%

Availability over the last 3 days

Last 72 hours
Availability 99.66%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
99.66%

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

GPT Image 2.5 Sunburst is an image generation and editing model from OpenAI, positioned as the precision-oriented tier of the GPT Image 2.5 series. It is suited to detailed creative work where editing accuracy matters more than generation speed, via the dedicated Images API.

GPT Image 2.5 Sunburst costs $8.00/M input tokens and $8.00/M output tokens, with separate rates for Cache Read at $2.00/M tokens, Text Input at $5.00/M tokens, and Image Output at $30.00/M tokens.

GPT Image 2.5 Sunburst supports the 1:1, 3:2, 2:3, 4:3, 3:4, 16:9 and 2 more aspect ratios and can generate up to 10 images per request.

GPT Image 2.5 Sunburst accepts text and images as input and returns images. Up to 16 reference images can be attached to one request for image editing.

GPT Image 2.5 Flare, GPT Image 2, GPT Image 1 Mini and 1 more are other image models from OpenAI.

GPT Image 2.5 Sunburst was released on September 9, 2026.