Amazon Nova Pro vs Molmo 72B
Compare Amazon Nova Pro and Molmo 72B: 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 | Molmo 72B |
|---|---|---|
| Category | Frontier | Vision |
| Parameters | ~300B | 72B |
| Context Window | 300K | 128K |
| Input Price | $0.008/1M tokens | $0.04/1M tokens |
| Output Price | $0.032/1M tokens | $0.08/1M tokens |
| Latency | ~300ms | ~350ms |
Choose Amazon Nova Pro when:
- ✓ Budget apps
- ✓ Document analysis
- ✓ Enterprise
Very low cost, 300K context, Multimodal
Choose Molmo 72B when:
- ✓ Visual grounding
- ✓ Object detection
- ✓ Research
Fully open, Good pointing/grounding, Transparent
Verdict: Amazon Nova Pro vs Molmo 72B
For cost efficiency, Amazon Nova Pro wins at $0.008/1M input tokens. For speed, Amazon Nova Pro is faster at ~300ms. Amazon Nova Pro excels at Budget apps while Molmo 72B is better for Visual grounding. 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. Molmo 72B costs $0.04 input and $0.08 output. Amazon Nova Pro is 5.0x 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. Molmo 72B offers 128K context at ~350ms. Amazon Nova Pro has the larger context window.
Best For
Amazon Nova Pro (Frontier) is optimized for: Budget apps, Document analysis, Enterprise. Molmo 72B (Vision) works best for: Visual grounding, Object detection, Research.
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 Molmo 72B
response_b = client.chat.completions.create(
model="molmo-72b",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Amazon Nova Pro or Molmo 72B?
Amazon Nova Pro (Frontier, ~300B) offers Very low cost. Molmo 72B (Vision, 72B) offers Fully open. Choose Amazon Nova Pro for Budget apps or Molmo 72B for Visual grounding.
How much does Amazon Nova Pro cost vs Molmo 72B?
Amazon Nova Pro: $0.008/1M input, $0.032/1M output. Molmo 72B: $0.04/1M input, $0.08/1M 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 Molmo 72B 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.