UltraGPT
OpenAI: GPT-5 Image Mini
GPT-5 Image Mini combines OpenAI's advanced language capabilities, powered by [GPT-5 Mini](https://openrouter.ai/openai/gpt-5-mini), with GPT Image 1 Mini for efficient image generation. This natively multimodal model features superior instruction following, text...
Intelligence overview
400K tok
Context window
128K tok
Max output
What OpenAI: GPT-5 Image Mini can do.
Reasoning
Extended reasoning
Works through problems step by step before answering, trading latency for accuracy on harder tasks.
Multimodal
Image understanding
Reads and reasons over images alongside text in the same prompt.
File input
Reads uploaded files — documents, spreadsheets, code — directly in context.
Development
Structured output
Returns responses constrained to a JSON schema, ready to parse without cleanup.
Streaming
Streams tokens as they're generated instead of waiting on the full response.
Performance
Design Arena — ranked #8 across 3 categories
Pay for what you use.
Every model in UltraGPT runs behind one flat subscription — this is the underlying per-token cost the catalog tracks.
$2.5 / 1M tok
$2 / 1M tok
Built for serious work.
Build
Generate and refactor code, with the ability to return structured, parseable output.
Think
Works through multi-step problems with extended reasoning before it answers.
Research
Holds up to 400K tokens of source material in context without losing the thread.
Create
Works across Image and Text output for richer creative work.
Ask OpenAI: GPT-5 Image Mini anything.
A preview of the real UltraGPT composer — the model you see here is the model you get.
Continues in the UltraGPT app — one login, every model.
How OpenAI: GPT-5 Image Mini stacks up.
The closest models in the catalog by provider, capability and score — real entries, pulled from the same directory.
Technical details.
Specification
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input modalities
- File + Image + Text
- Output modalities
- Image + Text
- Release date
- Oct 16, 2025
- Streaming
- Supported
- Tool calling
- Not supported
- JSON mode
- Supported
More from OpenAI, and everything else.
This model is one entry in the full UltraGPT catalog — browse the rest, compare pricing and context windows, or filter by capability.