FLUX.1 Dev vs Yi Lightning
Compare FLUX.1 Dev and Yi Lightning: 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 Dev | Yi Lightning |
|---|---|---|
| Category | Image | Open Source |
| Parameters | 12B | 200B MoE |
| Context Window | N/A | 128K |
| Input Price | $0.003/image/1M tokens | $0.04/1M tokens |
| Output Price | N/A/1M tokens | $0.08/1M tokens |
| Latency | ~3s | ~300ms |
Choose FLUX.1 Dev when:
- ✓ Custom styles
- ✓ Fine-tuned imagery
- ✓ Development
Fine-tunable, Good quality, Open weights
Choose Yi Lightning when:
- ✓ High-volume APIs
- ✓ Fast Q&A
- ✓ Real-time chatbots
Fast inference, Good multilingual, Strong reasoning
Verdict: FLUX.1 Dev vs Yi Lightning
For cost efficiency, FLUX.1 Dev wins at $0.003/image/1M input tokens. For speed, Yi Lightning is faster at ~300ms. FLUX.1 Dev excels at Custom styles while Yi Lightning is better for High-volume APIs. 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 Dev costs $0.003/image/1M input tokens and N/A/1M output tokens. Yi Lightning costs $0.04 input and $0.08 output. FLUX.1 Dev is 13.3x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
FLUX.1 Dev has a N/A context window with ~3s latency. Yi Lightning offers 128K context at ~300ms. Yi Lightning has the larger context window.
Best For
FLUX.1 Dev (Image) is optimized for: Custom styles, Fine-tuned imagery, Development. Yi Lightning (Open Source) works best for: High-volume APIs, Fast Q&A, Real-time chatbots.
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 Dev
response_a = client.chat.completions.create(
model="flux-1-dev",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Yi Lightning
response_b = client.chat.completions.create(
model="yi-lightning",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, FLUX.1 Dev or Yi Lightning?
FLUX.1 Dev (Image, 12B) offers Fine-tunable. Yi Lightning (Open Source, 200B MoE) offers Fast inference. Choose FLUX.1 Dev for Custom styles or Yi Lightning for High-volume APIs.
How much does FLUX.1 Dev cost vs Yi Lightning?
FLUX.1 Dev: $0.003/image/1M input, N/A/1M output. Yi Lightning: $0.04/1M input, $0.08/1M 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 Dev and Yi Lightning by changing the model parameter. No code changes needed.
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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.