Amazon Nova Pro vs SD 3.5 Medium
Compare Amazon Nova Pro and SD 3.5 Medium: 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 | SD 3.5 Medium |
|---|---|---|
| Category | Frontier | Image |
| Parameters | ~300B | 2.5B |
| Context Window | 300K | N/A |
| Input Price | $0.008/1M tokens | $0.003/image/1M tokens |
| Output Price | $0.032/1M tokens | N/A/1M tokens |
| Latency | ~300ms | ~2s |
Choose Amazon Nova Pro when:
- ✓ Budget apps
- ✓ Document analysis
- ✓ Enterprise
Very low cost, 300K context, Multimodal
Choose SD 3.5 Medium when:
- ✓ General imagery
- ✓ Batch generation
- ✓ Prototyping
Good quality, Fast, Open weights
Verdict: Amazon Nova Pro vs SD 3.5 Medium
For cost efficiency, SD 3.5 Medium wins at $0.003/image/1M input tokens. For speed, SD 3.5 Medium is faster at ~2s. Amazon Nova Pro excels at Budget apps while SD 3.5 Medium is better for General imagery. 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. SD 3.5 Medium costs $0.003/image input and N/A output. SD 3.5 Medium is 2.7x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Amazon Nova Pro has a 300K context window with ~300ms latency. SD 3.5 Medium offers N/A context at ~2s. Amazon Nova Pro has the larger context window.
Best For
Amazon Nova Pro (Frontier) is optimized for: Budget apps, Document analysis, Enterprise. SD 3.5 Medium (Image) works best for: General imagery, Batch generation, Prototyping.
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 SD 3.5 Medium
response_b = client.chat.completions.create(
model="stable-diffusion-3-5-medium",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Amazon Nova Pro or SD 3.5 Medium?
Amazon Nova Pro (Frontier, ~300B) offers Very low cost. SD 3.5 Medium (Image, 2.5B) offers Good quality. Choose Amazon Nova Pro for Budget apps or SD 3.5 Medium for General imagery.
How much does Amazon Nova Pro cost vs SD 3.5 Medium?
Amazon Nova Pro: $0.008/1M input, $0.032/1M output. SD 3.5 Medium: $0.003/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 SD 3.5 Medium 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.