OpenAI · Model and API
Describe an illustration, campaign image or photo edit in ordinary language. Start with text in runblob or add references to define your subject, visual direction and important details.
OpenAI introduced ChatGPT Images 2.5 (GPT Image 2.5) in September 2026. In OpenAI’s own API these modes are named gpt-image-2.5-flare and gpt-image-2.5-sunburst: Flare targets everyday generation, while Sunburst prioritizes more precise visual work with longer processing times.
Both runblob modes accept up to 8 reference image URLs. Explain the role of each reference: subject, background, palette or composition. Choose an aspect ratio before generation to fit the intended placement.
Start with the purpose and main subject, then add style, lighting and constraints. For a targeted edit, state what must stay unchanged, such as product placement and label text when replacing the setting.
To integrate the ChatGPT Images 2.5 API, select the exact version and settings in the playground. The generated cURL includes the endpoint, request fields and required Bearer authorization type. Move the request into your server code; keep secret keys out of the browser. References use service-accessible URLs rather than local file paths.
ChatGPT Images API pricing depends on whether you select Flare or Sunburst. For a banner series, approve the subject, setting and framing on one image first. Then vary only the necessary details, making the series budget easier to estimate and reducing avoidable retries.
Compare Flare and Sunburst on one task: lettering, composition and reference fidelity. Runblob routes legacy ChatGPT identifiers to current 2.5 generation and applies its rate. For a new integration, use the selected mode’s parameters from the playground.
Product imagery for catalogs and campaigns.
Composition variations for banners and covers.
Background and detail edits from written instructions.
Create a landscape coffee shop banner. Put a ceramic cup on a wooden table on the right and leave space for a headline on the left. Warm morning light, natural texture, no extra lettering.
An empty area lets you add approved copy in your layout editor.
Keep the reference bottle shape and label unchanged. Replace the background with a gray studio setting and add a soft contact shadow. Do not add a second bottle or props.
Compare both modes on object edges and label preservation.
Draw an isometric illustration of order packing: a box, paper filler, a product and the packer’s hands. Light background, restrained blue palette, no text.
One clear process helps evaluate composition without excessive detail.
Runblob prices in USD. The final cost depends on the selected version and request parameters. Public rates refresh every six hours; personal rates are available in your dashboard.
Configure the parameters and build an API request. Sign in to runblob to start a generation.
Start with Flare to explore alternatives. For detail-sensitive work, compare a Sunburst result. Each mode shows its cost before generation.
Runblob generation uses your runblob account and balance. A ChatGPT subscription does not pay for generations in this service.
In OpenAI’s own API this is the GPT Image 2.5 family, with the models gpt-image-2.5-flare and gpt-image-2.5-sunburst. It is a separate, newer model than the earlier GPT Image 2 (gpt-image-2): runblob offers the 2.5 versions, which are called through model=chatgpt-2.5 with a quality parameter.
Compare Flare and Sunburst on one task: lettering, composition and reference fidelity. Runblob routes legacy ChatGPT identifiers to current 2.5 generation and applies its rate. For a new integration, use the selected mode’s parameters from the playground.
To integrate the ChatGPT Images 2.5 API, select the exact version and settings in the playground. The generated cURL includes the endpoint, request fields and required Bearer authorization type. Move the request into your server code; keep secret keys out of the browser. References use service-accessible URLs rather than local file paths.
ChatGPT Images API pricing depends on whether you select Flare or Sunburst. For a banner series, approve the subject, setting and framing on one image first. Then vary only the necessary details, making the series budget easier to estimate and reducing avoidable retries.