# Midjourney v4: AI model fact sheet

- **Provider:** midjourney
- **Released:** 2022-11-05
- **Parameters:** Not disclosed (proprietary diffusion model)
- **Capabilities:** image-generation

Midjourney v4 marked a major leap forward with dramatically improved photorealism, coherence, and prompt understanding, trained on Google TPUs for the first time.

## Benchmarks

| Benchmark | Score |
| --- | --- |
| Human Preference Rate | 83.7% |

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/midjourney-v4