FLUX 3 Klein LoRA
FLUX 3 Klein LoRA text to image runs Black Forest Labs' step-distilled FLUX 3 Klein with up to three of your own LoRA files. Fifteen aspect ratios at 1k or 2k, and no content filter.
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FLUX 3 Klein LoRA vs MOSS-Image LoRA
At 1K, FLUX 3 Klein LoRA costs 28% less than MOSS-Image LoRA. Tier prices, request fields and limits side by side.
MOSS-Image LoRA
Text-to-image on MOSS-Image, OpenMOSS's open 5-billion-parameter model, with up to three of your own LoRAs per request. Base and SFT LoRAs load, style LoRAs work at scale 1, 15 aspect ratios, three resolution tiers, and no content filter.
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The short answer
Start with the input you have, the result you want and your budget. These are the differences that affect that choice.
- FLUX 3 Klein LoRA is 28% cheaper at 1K, the closest like-for-like setting the two publish.
- Both are listed as Uncensored. Compare the examples and content-test details on each model page for the scenes you want to create.
Compare the published examples, then try the same input on both models with matching settings.
Test scores side by side
The Spicy Index and Freedom Score for both models, from the same daily calculation as the leaderboards.
| Measure | FLUX 3 Klein LoRA | MOSS-Image LoRA |
|---|---|---|
| Spicy Index | 69.3 | 58.5 |
| Freedom Score | 48.0 | 54.0 |
| Evidence | Tested 5 of 6 probe types · 10 runs | Tested 5 of 6 probe types · 5 runs |
| Range if the rest pass | 48.0–90.0 | 54.0–100.0 |
| Price | $0.018 per image | $0.025 per image |
| Reviews | Read the FLUX 3 Klein LoRA review | Read the MOSS-Image LoRA review |
Preliminary · capability and freedom only, no quality evidence yet
See both on the leaderboard →Current price
Price at the same setting
A start price answers a different question than the one you have. These are the tiers both models publish, matched setting for setting, in US dollars per billed unit with no conversion step in between.
Swipe horizontally to compare all fields.
| Tier | FLUX 3 Klein LoRA | MOSS-Image LoRA | Difference |
|---|---|---|---|
| 1K | $0.018 / output images | $0.025 / output images | FLUX 3 Klein LoRA −28% |
| 2K | $0.054 / output images | $0.085 / output images | FLUX 3 Klein LoRA −36% |
What one ordinary job costs
- FLUX 3 Klein LoRA: $1.8 for one hundred images at 1K.
- MOSS-Image LoRA: $2.5 for one hundred images at 1K.
Arithmetic on the published rates at each model's own default setting, not a quote. The console prices your actual settings before a request is accepted.
About this comparison
Controls and limits
Every row here is read from the JSON Schema the endpoint validates against, so it matches what the API will really accept rather than a feature list written by hand.
Swipe horizontally to compare all fields.
| Controls and limits | FLUX 3 Klein LoRA | MOSS-Image LoRA |
|---|---|---|
| Supported tasks | text-to-image | text-to-image |
| Resolution tiers | 1K · 2K | 1K · 1.5k · 2K |
| Aspect ratios | 1:1 · 16:9 · 9:16 · 4:3 · 3:4 · 3:2 · 2:3 · 4:5 · 5:4 · 21:9 · 9:21 · 2:1 · 1:2 · 3:1 · 1:3 | 1:1 · 16:9 · 9:16 · 4:3 · 3:4 · 3:2 · 2:3 · 21:9 · 9:21 · 2:1 · 1:2 · 3:1 · 1:3 · 5:4 · 4:5 |
| High-resolution tier | Yes | Yes |
| Seed | Yes | Yes |
| Execution | Submit, then poll or take the callback | Submit, then poll or take the callback |
| Request timeout | 30 minutes | 30 minutes |
| Availability | Live | Live |
Do low-filter models allow every request?
Content policy, side by side
Two separate facts sit behind these labels. The first is what we do, which is nothing: no platform content filter, and no maturity flag to set on a request. The second is what each model does on its own, and that is the only part that varies between these two.
FLUX 3 Klein LoRA
Uncensored
This model declares no content filter. SpicyAPI forwards the request without adding a platform content scan; legal and consent duties remain with the customer.
MOSS-Image LoRA
Uncensored
This model declares no content filter. SpicyAPI forwards the request without adding a platform content scan; legal and consent duties remain with the customer.
Use these content labels to shortlist models, then open each model page for available examples and content-test details.
The label never changes your obligations. Age, consent, real-person likeness and the law where you operate stay with you, and SpicyAPI does not inspect each request.
Can I swap the model ID without changing the request body?
Request body, field by field
The task lifecycle is shared; the body is not. Each endpoint publishes its own JSON Schema and the API validates against that, so this is the list to reconcile before a switch.
- 6 fields appear in both request bodies under the same names. aspect_ratio, loras, output_format, prompt, resolution, seed
- FLUX 3 Klein LoRA accepts no field the other one lacks.
- MOSS-Image LoRA accepts no field the other one lacks.
- FLUX 3 Klein LoRA requires prompt.
- MOSS-Image LoRA requires prompt.
- Both reject unknown fields outright, so a parameter left over from the other model comes back as a validation error instead of being quietly ignored.
Compare
Moving from one to the other
The model identifiers are black-forest-labs/flux-3-klein-lora/text-to-image and openmoss/moss-image-lora/text-to-image, and both go in the same field of the same request.
Both run the same way: submit the task, then poll it or take the callback. Queueing and retry logic carry over unchanged.
Both use the same submit-and-track flow, but their required inputs may differ. Check each model page before switching.
One key, one balance, one set of spend caps. Both bill to the same account in US dollars, and the per-key daily, monthly and lifetime limits apply to whichever one you call.
Questions developers ask
Which is cheaper, FLUX 3 Klein LoRA or MOSS-Image LoRA?
Which is cheaper, FLUX 3 Klein LoRA or MOSS-Image LoRA?
FLUX 3 Klein LoRA is 28% cheaper at 1K, the closest like-for-like setting the two publish. Prices may change; check the estimate shown for your actual settings before submitting.
How long can a single request run?
FLUX 3 Klein LoRA allows 30 minutes per task and MOSS-Image LoRA allows 30. Those are ceilings rather than typical times — most requests finish far sooner — but they are what your own client timeout has to survive.
Prices and capabilities shown here come from the current public model catalogue. Check each model page for its latest inputs and examples.