FLUX 1.1 Pro vs SD 3.5 Large
Compare FLUX 1.1 Pro and SD 3.5 Large: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.
Updated 2026-05-21 · By Abhishek Raj · Our methodology
| Feature | FLUX 1.1 Pro | SD 3.5 Large |
|---|---|---|
| Category | Image | Image |
| Parameters | 24B | 8B |
| Context Window | N/A | N/A |
| Input Price | $0.05/image/1M tokens | $0.004/image/1M tokens |
| Output Price | N/A/1M tokens | N/A/1M tokens |
| Latency | ~4s | ~3s |
Choose FLUX 1.1 Pro when:
- ✓ Premium marketing
- ✓ Temple artwork
- ✓ Product photography
Highest quality, Best prompt adherence, Professional grade
Choose SD 3.5 Large when:
- ✓ Detailed illustrations
- ✓ Temple artwork
- ✓ Marketing imagery
High quality, Detailed output, Good composition
Verdict: FLUX 1.1 Pro vs SD 3.5 Large
For cost efficiency, SD 3.5 Large wins at $0.004/image/1M input tokens. For speed, SD 3.5 Large is faster at ~3s. FLUX 1.1 Pro excels at Premium marketing while SD 3.5 Large is better for Detailed illustrations. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.
Detailed Analysis
Pricing Comparison
FLUX 1.1 Pro costs $0.05/image/1M input tokens and N/A/1M output tokens. SD 3.5 Large costs $0.004/image input and N/A output. SD 3.5 Large is 12.5x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
FLUX 1.1 Pro has a N/A context window with ~4s latency. SD 3.5 Large offers N/A context at ~3s. Both have identical context windows.
Best For
FLUX 1.1 Pro (Image) is optimized for: Premium marketing, Temple artwork, Product photography. SD 3.5 Large (Image) works best for: Detailed illustrations, Temple artwork, Marketing imagery.
Try Both on XALEN
Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:
from xalen import XALEN
client = XALEN(api_key="xln_test_YOUR_KEY")
# Use FLUX 1.1 Pro
response_a = client.chat.completions.create(
model="flux-1-1-pro",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use SD 3.5 Large
response_b = client.chat.completions.create(
model="stable-diffusion-3-5-large",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, FLUX 1.1 Pro or SD 3.5 Large?
FLUX 1.1 Pro (Image, 24B) offers Highest quality. SD 3.5 Large (Image, 8B) offers High quality. Choose FLUX 1.1 Pro for Premium marketing or SD 3.5 Large for Detailed illustrations.
How much does FLUX 1.1 Pro cost vs SD 3.5 Large?
FLUX 1.1 Pro: $0.05/image/1M input, N/A/1M output. SD 3.5 Large: $0.004/image/1M input, N/A/1M output. Both available on XALEN with batch processing at 50% discount.
Can I use both models on XALEN?
Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between FLUX 1.1 Pro and SD 3.5 Large by changing the model parameter. No code changes needed.
Related Comparisons
Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.