OpenAI: GPT-Image-2.5 Sunburst
OpenAI GPT-Image-2.5 Sunburst API pricing
GPT-Image-2.5 Sunburst costs $2.00 per million input tokens and $12.00 per million image output tokens on Oxyy. These are the pay-as-you-go prices after the current 60% discount (Launch Promo; standard price $5.00 input and $30.00 image output), and cached input tokens are billed at $0.500 per million. It generates images from text prompts and can work from reference images. A cheaper OpenAI option is GPT Image 2 at $1.00 / $6.00 per 1M tokens; for every model and rate, see OpenAI API pricing.
Providers
Where this model runs, and what each route costs. Requests are sent to a healthy provider automatically; if one errors, the gateway retries against another serving the same model.
| Provider | Input /M | Output /M | Cache read /M | Latency | Throughput |
|---|---|---|---|---|---|
| OpenAI | $2.00 | $12.00 | $0.500 | 23.72s | — |
Capabilities (15)
Supported parameters (10)
The endpoint's own fields, shown in the quickstart below, are required as well; a request without them is rejected.
Pricing
What this model costs on Oxyy, pay as you go. "Charged" is the rate a request is billed at; the standard price is shown beside it for reference.
| Rate | Standard price | Charged | Unit |
|---|---|---|---|
| Input | $5.00 | $2.00 | per 1M input tokens |
| Image output | $30.00 | $12.00 | per 1M image output tokens |
| Text output | $0 | $0 | per 1M text output tokens |
| Cached input | $1.25 | $0.500 | per 1M cached input tokens |
Discount. Charged rates include the current "Launch Promo" discount of 60% on every rate.
Specifications
- Model ID
gpt-image-2.5-sunburst- Developer
- OpenAI
- Type
- Image generation
- Input
- Text and images
- Output
- Images
- Released
- Sep 8, 2026
- Tokenizer
- GPT
- Series
- GPT-Image 2.5
- Image input
- Up to 20 MB each, 16 per request · PNG, WebP, JPEG
- Endpoint
/v1/images/generations
Best for
Quickstart
Call gpt-image-2.5-sunburst with a POST to /v1/images/generations on https://api.oxyy.ai, using your Oxyy API key from the OXYY_API_KEY environment variable. The same key works for every model in the catalog.
import os
from openai import OpenAI
client = OpenAI(
base_url="https://api.oxyy.ai/v1",
api_key=os.environ["OXYY_API_KEY"],
)
response = client.images.generate(
model="gpt-image-2.5-sunburst",
prompt="A lighthouse on a cliff at sunset, watercolor",
n=1,
size="1024x1024",
)
print(response.data[0].url)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). Throughput and TTFT are measured on streaming requests, which are the only ones with a first-token moment to time.
Throughput
Latency
Time to first token
Cache hit rate
Availability
The share of requests to this model that completed successfully over the last 30 days. Requests the caller cancelled, and requests still in flight, are not counted. When an upstream provider errors, the gateway retries against another provider serving the same model, so a single provider incident does not necessarily show up here.
Days are UTC days. Days with no completed requests are omitted rather than drawn at 100% — no traffic is not evidence of availability.
Activity
Token volume and request traffic to this model over time. Daily totals, UTC.
Prompt tokens measure input size. Completion tokens reflect total output length. Reasoning is not priced separately for this model, so it is not itemised here.
Frequently asked questions
What is GPT-Image-2.5 Sunburst?
How much does GPT-Image-2.5 Sunburst cost?
What can I send to GPT-Image-2.5 Sunburst?
Which API endpoint does GPT-Image-2.5 Sunburst use?
When was GPT-Image-2.5 Sunburst released?
What other models does OpenAI have?
Alternatives to GPT-Image-2.5 Sunburst
Models of the same kind from other vendors, closest in price first. Prices are pay-as-you-go on Oxyy, through the same API key.