# Replicate — FLUX is fast and it's open source

- Company: Replicate (replicate.com)
- Announced: 2024-10-10T00:00:00+00:00
- Category: capability-change
- Subject: Platform
- Models affected: FLUX.1 [schnell], FLUX.1 [dev]
- Source: https://replicate.com/blog/flux-is-fast-and-open-source
- Record: https://forck.live/items/2511-flux-is-fast-and-it-s-open-source

Replicate has optimized FLUX.1 schnell and FLUX.1 dev models to run significantly faster, and has open-sourced the optimization code. The optimizations include using torch.compile, fast CuDNN attention kernels, and a new synchronous HTTP API. Users can disable optimizations via the go_fast input.

## Evidence

Verbatim from https://replicate.com/blog/flux-is-fast-and-open-source:

> FLUX is now much faster on Replicate, and we’ve made our optimizations open-source so you can see exactly how they work and build upon them.

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