AI image models compared
Flux Schnell vs SDXL Lightning
The two speed options, both at 26 credits. SDXL Lightning has the lower latency of the two and accepts LoRAs. Flux Schnell produces the better image and understands prompts written as ordinary sentences.
Unless you specifically need an SDXL adapter or are generating at genuinely high throughput, Flux Schnell is the better default — the quality gap is more noticeable than the seconds you save.
Choose Flux Schnell if
- You want the better image at the budget tier
- Your prompts are descriptive sentences
- No LoRA involved
Choose SDXL Lightning if
- You need an SDXL LoRA at speed
- You are generating large batches and latency compounds
- You are testing adapter weights across many prompts
Side by side
| Flux Schnell | SDXL Lightning | |
|---|---|---|
| Price | 26 credits | 26 credits |
| Roughly | about 2c | about 2c |
| Provider | fal | fal |
| Aspect ratios | 13 — 1:1, 4:3, 16:9, 3:2, 19.5:9, 20:9, 2:1, 3:4, 9:16, 2:3, 9:19.5, 9:20, 1:2 | 13 — 1:1, 4:3, 16:9, 3:2, 19.5:9, 20:9, 2:1, 3:4, 9:16, 2:3, 9:19.5, 9:20, 1:2 |
| Resolutions | 1k, 2k | 1k, 2k |
| LoRA support | No | Yes |
| Modes | generate | generate |
Specifications are measured against each endpoint, not copied from a vendor page. Cash figures are approximate at starter-pack rates — see pricing. Highlighted rows are where the two models differ.
Try either one
Open Flux SchnellOpen SDXL Lightning
New accounts start with free credits, and credits never expire. Read more about Flux Schnell or SDXL Lightning, or see every model on comfyarts.