Claude Opus 4 vs StarCoder2 15B
Compare Claude Opus 4 and StarCoder2 15B: 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 Opus 4 | StarCoder2 15B |
|---|---|---|
| Category | Frontier | Code |
| Parameters | ~2T | 15B |
| Context Window | 200K | 16K |
| Input Price | $0.15/1M tokens | $0.02/1M tokens |
| Output Price | $0.75/1M tokens | $0.03/1M tokens |
| Latency | ~800ms | ~150ms |
Choose Claude Opus 4 when:
- ✓ Complex counseling
- ✓ Detailed chart analysis
- ✓ Enterprise reports
Deepest reasoning, Exceptional nuance, Best complex analysis
Choose StarCoder2 15B when:
- ✓ Code completion
- ✓ Code generation
- ✓ Bug fixing
Strong coding, 600+ languages, Open weights
Verdict: Claude Opus 4 vs StarCoder2 15B
For cost efficiency, StarCoder2 15B wins at $0.02/1M input tokens. For speed, StarCoder2 15B is faster at ~150ms. Claude Opus 4 excels at Complex counseling while StarCoder2 15B is better for Code completion. 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 Opus 4 costs $0.15/1M input tokens and $0.75/1M output tokens. StarCoder2 15B costs $0.02 input and $0.03 output. StarCoder2 15B is 7.5x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Claude Opus 4 has a 200K context window with ~800ms latency. StarCoder2 15B offers 16K context at ~150ms. Claude Opus 4 has the larger context window.
Best For
Claude Opus 4 (Frontier) is optimized for: Complex counseling, Detailed chart analysis, Enterprise reports. StarCoder2 15B (Code) works best for: Code completion, Code generation, Bug fixing.
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 Opus 4
response_a = client.chat.completions.create(
model="claude-opus-4",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use StarCoder2 15B
response_b = client.chat.completions.create(
model="starcoder2-15b",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Claude Opus 4 or StarCoder2 15B?
Claude Opus 4 (Frontier, ~2T) offers Deepest reasoning. StarCoder2 15B (Code, 15B) offers Strong coding. Choose Claude Opus 4 for Complex counseling or StarCoder2 15B for Code completion.
How much does Claude Opus 4 cost vs StarCoder2 15B?
Claude Opus 4: $0.15/1M input, $0.75/1M output. StarCoder2 15B: $0.02/1M input, $0.03/1M 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 Opus 4 and StarCoder2 15B by changing the model parameter. No code changes needed.
Related Comparisons
Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.