FLUX.1 Dev vs InternVL 2.5 78B
Compare FLUX.1 Dev 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 Dev | InternVL 2.5 78B |
|---|---|---|
| Category | Image | Vision |
| Parameters | 12B | 78B |
| Context Window | N/A | 128K |
| Input Price | $0.003/image/1M tokens | $0.05/1M tokens |
| Output Price | N/A/1M tokens | $0.10/1M tokens |
| Latency | ~3s | ~400ms |
Choose FLUX.1 Dev when:
- ✓ Custom styles
- ✓ Fine-tuned imagery
- ✓ Development
Fine-tunable, Good quality, Open weights
Choose InternVL 2.5 78B when:
- ✓ Document analysis
- ✓ Chart reading
- ✓ Visual Q&A
Strong visual reasoning, Open weights, Good OCR
Verdict: FLUX.1 Dev vs InternVL 2.5 78B
For cost efficiency, FLUX.1 Dev wins at $0.003/image/1M input tokens. For speed, FLUX.1 Dev is faster at ~3s. FLUX.1 Dev excels at Custom styles 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 Dev costs $0.003/image/1M input tokens and N/A/1M output tokens. InternVL 2.5 78B costs $0.05 input and $0.10 output. FLUX.1 Dev is 16.7x 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. InternVL 2.5 78B offers 128K context at ~400ms. InternVL 2.5 78B has the larger context window.
Best For
FLUX.1 Dev (Image) is optimized for: Custom styles, Fine-tuned imagery, Development. 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 Dev
response_a = client.chat.completions.create(
model="flux-1-dev",
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 Dev or InternVL 2.5 78B?
FLUX.1 Dev (Image, 12B) offers Fine-tunable. InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Choose FLUX.1 Dev for Custom styles or InternVL 2.5 78B for Document analysis.
How much does FLUX.1 Dev cost vs InternVL 2.5 78B?
FLUX.1 Dev: $0.003/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 Dev 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.