Claude Sonnet 4.5 vs Arctic Large
Compare Claude Sonnet 4.5 and Arctic Large: 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 | Claude Sonnet 4.5 | Arctic Large |
|---|---|---|
| Category | Frontier | Enterprise |
| Parameters | ~600B | 480B (17B active) |
| Context Window | 200K | 128K |
| Input Price | $0.03/1M tokens | $0.06/1M tokens |
| Output Price | $0.15/1M tokens | $0.10/1M tokens |
| Latency | ~350ms | ~400ms |
Choose Claude Sonnet 4.5 when:
- ✓ Code generation
- ✓ Structured output
- ✓ Automation
Strong coding, Better instruction following, Reliable
Choose Arctic Large when:
- ✓ Data analysis
- ✓ SQL generation
- ✓ Business intelligence
Strong SQL, Data analysis, Enterprise features
Verdict: Claude Sonnet 4.5 vs Arctic Large
For cost efficiency, Claude Sonnet 4.5 wins at $0.03/1M input tokens. For speed, Claude Sonnet 4.5 is faster at ~350ms. Claude Sonnet 4.5 excels at Code generation while Arctic Large is better for Data 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
Claude Sonnet 4.5 costs $0.03/1M input tokens and $0.15/1M output tokens. Arctic Large costs $0.06 input and $0.10 output. Claude Sonnet 4.5 is 2.0x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Claude Sonnet 4.5 has a 200K context window with ~350ms latency. Arctic Large offers 128K context at ~400ms. Claude Sonnet 4.5 has the larger context window.
Best For
Claude Sonnet 4.5 (Frontier) is optimized for: Code generation, Structured output, Automation. Arctic Large (Enterprise) works best for: Data analysis, SQL generation, Business intelligence.
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 Claude Sonnet 4.5
response_a = client.chat.completions.create(
model="claude-sonnet-4-5",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Arctic Large
response_b = client.chat.completions.create(
model="arctic-large",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Claude Sonnet 4.5 or Arctic Large?
Claude Sonnet 4.5 (Frontier, ~600B) offers Strong coding. Arctic Large (Enterprise, 480B (17B active)) offers Strong SQL. Choose Claude Sonnet 4.5 for Code generation or Arctic Large for Data analysis.
How much does Claude Sonnet 4.5 cost vs Arctic Large?
Claude Sonnet 4.5: $0.03/1M input, $0.15/1M output. Arctic Large: $0.06/1M 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 Claude Sonnet 4.5 and Arctic Large 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.