FLUX 1.1 Pro Ultra vs InternVL 2.5 78B
Compare FLUX 1.1 Pro Ultra and InternVL 2.5 78B: 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 Ultra | InternVL 2.5 78B |
|---|---|---|
| Category | Image | Vision |
| Parameters | ~30B | 78B |
| Context Window | N/A | 128K |
| Input Price | $0.06/image/1M tokens | $0.05/1M tokens |
| Output Price | N/A/1M tokens | $0.10/1M tokens |
| Latency | ~6s | ~400ms |
Choose FLUX 1.1 Pro Ultra when:
- ✓ Print-quality imagery
- ✓ Ultra-HD content
- ✓ Professional art
Ultra quality, 4K output, Best detail
Choose InternVL 2.5 78B when:
- ✓ Document analysis
- ✓ Chart reading
- ✓ Visual Q&A
Strong visual reasoning, Open weights, Good OCR
Verdict: FLUX 1.1 Pro Ultra vs InternVL 2.5 78B
For cost efficiency, InternVL 2.5 78B wins at $0.05/1M input tokens. For speed, InternVL 2.5 78B is faster at ~400ms. FLUX 1.1 Pro Ultra excels at Print-quality imagery while InternVL 2.5 78B is better for Document analysis. 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 Ultra costs $0.06/image/1M input tokens and N/A/1M output tokens. InternVL 2.5 78B costs $0.05 input and $0.10 output. InternVL 2.5 78B is 1.2x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
FLUX 1.1 Pro Ultra has a N/A context window with ~6s latency. InternVL 2.5 78B offers 128K context at ~400ms. InternVL 2.5 78B has the larger context window.
Best For
FLUX 1.1 Pro Ultra (Image) is optimized for: Print-quality imagery, Ultra-HD content, Professional art. InternVL 2.5 78B (Vision) works best for: Document analysis, Chart reading, Visual Q&A.
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 Ultra
response_a = client.chat.completions.create(
model="flux-1-1-pro-ultra",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use InternVL 2.5 78B
response_b = client.chat.completions.create(
model="internvl-2-5-78b",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, FLUX 1.1 Pro Ultra or InternVL 2.5 78B?
FLUX 1.1 Pro Ultra (Image, ~30B) offers Ultra quality. InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Choose FLUX 1.1 Pro Ultra for Print-quality imagery or InternVL 2.5 78B for Document analysis.
How much does FLUX 1.1 Pro Ultra cost vs InternVL 2.5 78B?
FLUX 1.1 Pro Ultra: $0.06/image/1M input, N/A/1M output. InternVL 2.5 78B: $0.05/1M input, $0.10/1M 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 Ultra and InternVL 2.5 78B 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.