Amazon Nova Pro vs Claude 3.5 Sonnet (Thinking)

Compare Amazon Nova Pro and Claude 3.5 Sonnet (Thinking): pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

All Amazon models All Anthropic models What is an LLM API? Python Quickstart What is inference?
Feature Amazon Nova Pro Claude 3.5 Sonnet (Thinking)
CategoryFrontierReasoning
Parameters~300B~500B
Context Window300K200K
Input Price$0.008/1M tokens$0.03/1M tokens
Output Price$0.032/1M tokens$0.15/1M tokens
Latency~300ms~600ms

Choose Amazon Nova Pro when:

  • ✓ Budget apps
  • ✓ Document analysis
  • ✓ Enterprise
Key Strengths:

Very low cost, 300K context, Multimodal

Choose Claude 3.5 Sonnet (Thinking) when:

  • ✓ Complex analysis
  • ✓ Multi-step logic
  • ✓ Verification tasks
Key Strengths:

Transparent thinking, Strong reasoning, Self-correction

Verdict: Amazon Nova Pro vs Claude 3.5 Sonnet (Thinking)

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 Claude 3.5 Sonnet (Thinking) is better for Complex 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

Amazon Nova Pro costs $0.008/1M input tokens and $0.032/1M output tokens. Claude 3.5 Sonnet (Thinking) costs $0.03 input and $0.15 output. Amazon Nova Pro is 3.8x 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. Claude 3.5 Sonnet (Thinking) offers 200K context at ~600ms. Amazon Nova Pro has the larger context window.

Best For

Amazon Nova Pro (Frontier) is optimized for: Budget apps, Document analysis, Enterprise. Claude 3.5 Sonnet (Thinking) (Reasoning) works best for: Complex analysis, Multi-step logic, Verification tasks.

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 Claude 3.5 Sonnet (Thinking)
response_b = client.chat.completions.create(
    model="claude-3-5-sonnet-thinking",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

200+ AI models. One API. Pay-as-you-go.

Get API Key Try in Playground

Frequently Asked Questions

Which is better, Amazon Nova Pro or Claude 3.5 Sonnet (Thinking)?

Amazon Nova Pro (Frontier, ~300B) offers Very low cost. Claude 3.5 Sonnet (Thinking) (Reasoning, ~500B) offers Transparent thinking. Choose Amazon Nova Pro for Budget apps or Claude 3.5 Sonnet (Thinking) for Complex analysis.

How much does Amazon Nova Pro cost vs Claude 3.5 Sonnet (Thinking)?

Amazon Nova Pro: $0.008/1M input, $0.032/1M output. Claude 3.5 Sonnet (Thinking): $0.03/1M input, $0.15/1M 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 Claude 3.5 Sonnet (Thinking) 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.