# GPT-5.5

> GPT-5.5 used as a text-to-vector (SVG) generator.

## Quick Reference

- Model ID: gpt-5.5
- Creator: OpenAI
- Status: active
- Family: gpt-5
- Base URL: https://api.lumenfall.ai/openai/v1

## Specifications

- Input Modalities: text
- Output Modalities: image
- Supported Modes: Text to Vector

## API Parameters

The compiled parameter schema for this model is available via the API: `GET /v1/models/gpt-5.5?schema=true`.

### Core Parameters

- `prompt` (string) — REQUIRED: Text prompt for SVG vector generation

### Size & Layout

- `size` (string): Image dimensions as WxH pixels (e.g. "1024x1024") or aspect ratio (e.g. "16:9")
- `aspect_ratio` (string): Aspect ratio of the output image (e.g. "16:9", "1:1")
- `resolution` (string): Output resolution tier (e.g. "1K", "4K")

### Output & Format

- `response_format` (string): How to return the image. Default: url. Values: url, b64_json
- `output_format` (string): Output image format. Values: png, jpeg, gif, webp, avif
- `output_compression` (integer): Compression level for lossy formats (JPEG, WebP, AVIF)
- `n` (integer): Number of images to generate. Default: 1


## Model Identifiers

- Primary Slug: gpt-5.5


## Tags

image-generation, text-to-vector, svg

## Available Providers

### OpenRouter

- Config Key: openrouter/gpt-5.5
- Provider Model ID: openai/gpt-5.5
- Pricing: $5.00/M input tokens, $30.00/M output tokens
  - Source: https://models.dev/models/openrouter/gpt-5.5/


## Performance Metrics

Provider performance over the last 30 days.

### openrouter

- Median Generation Time (p50): 41931ms
- 95th Percentile Generation Time (p95): 70668ms
- Average Generation Time: 44150ms
- Success Rate: 95.0%
- Total Requests: 20
- Time to First Byte (p50): 740ms
- Time to First Byte (p95): 1534ms


## Image Gallery

4 images available for this model. Browse all at https://lumenfall.ai/models/openai/gpt-5.5/gallery

### Curated Examples

- [A stylized, geometric fountain pen nib that transitions into a digital lightning bolt, Flat 2.0 s...](https://assets.lumenfall.ai/zi3gAPVNosFunboCKB0ADFR1wbQZgl_Tagjcdh-Cj8U/rs:fit:1500:1500/plain/gs://lumenfall-prod-assets/v7dz2k4arcvhb5ox8vazxufoglsd@jpeg)
- [Editorial flat illustration of an anthropomorphic printing press with agile robotic hands, meticu...](https://assets.lumenfall.ai/29DuIlU9tDVWOFXp3q5fGGcMSSuI-XAtykUFyMXpgYA/rs:fit:1500:1500/plain/gs://lumenfall-prod-assets/hzvoqxfhcwoqjbd40j7aahdh0l0v@jpeg)
- [Paper-cut style illustration of an oversized, incandescent lightbulb containing a complex labyrin...](https://assets.lumenfall.ai/q6uLSUOyWOs-1CRANSuryBj2ZULvlMpCe0zkR57ERQI/rs:fit:1500:1500/plain/gs://lumenfall-prod-assets/lbdwhjjb2c4bwq3yyprc6n278c49@jpeg)
- [Line-and-fill illustration of a giant, glowing mechanical ink-well pouring liquid neon pixels ont...](https://assets.lumenfall.ai/hNj3HFEVS1zPxyT1ARekeSJDwwvrGZ8dlM9upa5yv2g/rs:fit:1500:1500/plain/gs://lumenfall-prod-assets/n9we7ksthfqgox4279vnlkhvzlcs@jpeg)

## Example Prompt

The following prompt was used to generate an example image in our playground:

Line-and-fill illustration of a giant, glowing mechanical ink-well pouring liquid neon pixels onto a parchment. A tiny capybara sits quietly in the shadow of the ink-well, watching vibrant geometric letters float and assemble in mid-air. Cyberpunk palette of cobalt, magenta, and deep charcoal.

## Code Examples


## Frequently Asked Questions

### How do I use GPT-5.5 via API?

You can use GPT-5.5 through Lumenfall's OpenAI-compatible API. Send requests to the unified endpoint with model ID "gpt-5.5". Code examples are available in Python, JavaScript, and cURL.

### Which providers offer GPT-5.5?

GPT-5.5 is available through OpenRouter on Lumenfall. Lumenfall automatically routes requests to the best available provider.

## Links

- Model Page: https://lumenfall.ai/models/openai/gpt-5.5
- About: https://lumenfall.ai/models/openai/gpt-5.5/about
- Providers, Pricing & Performance: https://lumenfall.ai/models/openai/gpt-5.5/providers
- API Reference: https://lumenfall.ai/models/openai/gpt-5.5/api
- Benchmarks: https://lumenfall.ai/models/openai/gpt-5.5/benchmarks
- Use Cases: https://lumenfall.ai/models/openai/gpt-5.5/use-cases
- Gallery: https://lumenfall.ai/models/openai/gpt-5.5/gallery
- Playground: https://lumenfall.ai/models/openai/gpt-5.5/playground
- API Documentation: https://docs.lumenfall.ai