Claude Sonnet 4.5 vs Yi Large
Compare Claude Sonnet 4.5 and Yi 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 | Yi Large |
|---|---|---|
| Category | Frontier | Open Source |
| Parameters | ~600B | 300B |
| Context Window | 200K | 200K |
| Input Price | $0.03/1M tokens | $0.06/1M tokens |
| Output Price | $0.15/1M tokens | $0.12/1M tokens |
| Latency | ~350ms | ~450ms |
Choose Claude Sonnet 4.5 when:
- ✓ Code generation
- ✓ Structured output
- ✓ Automation
Strong coding, Better instruction following, Reliable
Choose Yi Large when:
- ✓ Long document analysis
- ✓ Research
- ✓ Complex tasks
200K context, Strong analysis, Good reasoning
Verdict: Claude Sonnet 4.5 vs Yi 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 Yi Large is better for Long document 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. Yi Large costs $0.06 input and $0.12 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. Yi Large offers 200K context at ~450ms. Both have identical context windows.
Best For
Claude Sonnet 4.5 (Frontier) is optimized for: Code generation, Structured output, Automation. Yi Large (Open Source) works best for: Long document analysis, Research, Complex 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 Claude Sonnet 4.5
response_a = client.chat.completions.create(
model="claude-sonnet-4-5",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Yi Large
response_b = client.chat.completions.create(
model="yi-large",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Claude Sonnet 4.5 or Yi Large?
Claude Sonnet 4.5 (Frontier, ~600B) offers Strong coding. Yi Large (Open Source, 300B) offers 200K context. Choose Claude Sonnet 4.5 for Code generation or Yi Large for Long document analysis.
How much does Claude Sonnet 4.5 cost vs Yi Large?
Claude Sonnet 4.5: $0.03/1M input, $0.15/1M output. Yi Large: $0.06/1M input, $0.12/1M 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 Yi 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.