Stable Image Ultra vs InternVL 2.5 78B
Compare Stable Image 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 | Stable Image Ultra | InternVL 2.5 78B |
|---|---|---|
| Category | Image | Vision |
| Parameters | ~12B | 78B |
| Context Window | N/A | 128K |
| Input Price | $0.008/image/1M tokens | $0.05/1M tokens |
| Output Price | N/A/1M tokens | $0.10/1M tokens |
| Latency | ~4s | ~400ms |
Choose Stable Image Ultra when:
- ✓ Premium photography
- ✓ Marketing
- ✓ Product shoots
Highest quality, Photorealistic, Professional
Choose InternVL 2.5 78B when:
- ✓ Document analysis
- ✓ Chart reading
- ✓ Visual Q&A
Strong visual reasoning, Open weights, Good OCR
Verdict: Stable Image Ultra vs InternVL 2.5 78B
For cost efficiency, Stable Image Ultra wins at $0.008/image/1M input tokens. For speed, InternVL 2.5 78B is faster at ~400ms. Stable Image Ultra excels at Premium photography 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
Stable Image Ultra costs $0.008/image/1M input tokens and N/A/1M output tokens. InternVL 2.5 78B costs $0.05 input and $0.10 output. Stable Image Ultra is 6.3x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Stable Image Ultra has a N/A context window with ~4s latency. InternVL 2.5 78B offers 128K context at ~400ms. InternVL 2.5 78B has the larger context window.
Best For
Stable Image Ultra (Image) is optimized for: Premium photography, Marketing, Product shoots. 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 Stable Image Ultra
response_a = client.chat.completions.create(
model="stable-image-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, Stable Image Ultra or InternVL 2.5 78B?
Stable Image Ultra (Image, ~12B) offers Highest quality. InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Choose Stable Image Ultra for Premium photography or InternVL 2.5 78B for Document analysis.
How much does Stable Image Ultra cost vs InternVL 2.5 78B?
Stable Image Ultra: $0.008/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 Stable Image 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.