Claude Sonnet 4.5 vs Codestral
Compare Claude Sonnet 4.5 and Codestral: 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 | Codestral |
|---|---|---|
| Category | Frontier | Code |
| Parameters | ~600B | 22B |
| Context Window | 200K | 256K |
| Input Price | $0.03/1M tokens | $0.03/1M tokens |
| Output Price | $0.15/1M tokens | $0.05/1M tokens |
| Latency | ~350ms | ~200ms |
Choose Claude Sonnet 4.5 when:
- ✓ Code generation
- ✓ Structured output
- ✓ Automation
Strong coding, Better instruction following, Reliable
Choose Codestral when:
- ✓ API integration code
- ✓ SDK generation
- ✓ Code review
256K context for code, Strong code generation, Good APIs
Verdict: Claude Sonnet 4.5 vs Codestral
For cost efficiency, Codestral wins at $0.03/1M input tokens. For speed, Codestral is faster at ~200ms. Claude Sonnet 4.5 excels at Code generation while Codestral is better for API integration code. 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. Codestral costs $0.03 input and $0.05 output. Both models are similarly priced. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Claude Sonnet 4.5 has a 200K context window with ~350ms latency. Codestral offers 256K context at ~200ms. Codestral has the larger context window.
Best For
Claude Sonnet 4.5 (Frontier) is optimized for: Code generation, Structured output, Automation. Codestral (Code) works best for: API integration code, SDK generation, Code review.
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 Codestral
response_b = client.chat.completions.create(
model="codestral",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Claude Sonnet 4.5 or Codestral?
Claude Sonnet 4.5 (Frontier, ~600B) offers Strong coding. Codestral (Code, 22B) offers 256K context for code. Choose Claude Sonnet 4.5 for Code generation or Codestral for API integration code.
How much does Claude Sonnet 4.5 cost vs Codestral?
Claude Sonnet 4.5: $0.03/1M input, $0.15/1M output. Codestral: $0.03/1M input, $0.05/1M 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 Codestral 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.