Amazon Nova Pro vs Stable Image Ultra
Compare Amazon Nova Pro and Stable Image Ultra: 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 | Amazon Nova Pro | Stable Image Ultra |
|---|---|---|
| Category | Frontier | Image |
| Parameters | ~300B | ~12B |
| Context Window | 300K | N/A |
| Input Price | $0.008/1M tokens | $0.008/image/1M tokens |
| Output Price | $0.032/1M tokens | N/A/1M tokens |
| Latency | ~300ms | ~4s |
Choose Amazon Nova Pro when:
- ✓ Budget apps
- ✓ Document analysis
- ✓ Enterprise
Very low cost, 300K context, Multimodal
Choose Stable Image Ultra when:
- ✓ Premium photography
- ✓ Marketing
- ✓ Product shoots
Highest quality, Photorealistic, Professional
Verdict: Amazon Nova Pro vs Stable Image Ultra
For cost efficiency, Stable Image Ultra wins at $0.008/image/1M input tokens. For speed, Amazon Nova Pro is faster at ~300ms. Amazon Nova Pro excels at Budget apps while Stable Image Ultra is better for Premium photography. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.
Detailed Analysis
Pricing Comparison
Amazon Nova Pro costs $0.008/1M input tokens and $0.032/1M output tokens. Stable Image Ultra costs $0.008/image input and N/A output. Both models are similarly priced. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Amazon Nova Pro has a 300K context window with ~300ms latency. Stable Image Ultra offers N/A context at ~4s. Amazon Nova Pro has the larger context window.
Best For
Amazon Nova Pro (Frontier) is optimized for: Budget apps, Document analysis, Enterprise. Stable Image Ultra (Image) works best for: Premium photography, Marketing, Product shoots.
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 Amazon Nova Pro
response_a = client.chat.completions.create(
model="amazon-nova-pro",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Stable Image Ultra
response_b = client.chat.completions.create(
model="stable-image-ultra",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Amazon Nova Pro or Stable Image Ultra?
Amazon Nova Pro (Frontier, ~300B) offers Very low cost. Stable Image Ultra (Image, ~12B) offers Highest quality. Choose Amazon Nova Pro for Budget apps or Stable Image Ultra for Premium photography.
How much does Amazon Nova Pro cost vs Stable Image Ultra?
Amazon Nova Pro: $0.008/1M input, $0.032/1M output. Stable Image Ultra: $0.008/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 Amazon Nova Pro and Stable Image Ultra 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.