Claude Opus 4.5 vs Stable Image Ultra
Compare Claude Opus 4.5 and Stable Image Ultra: 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 4.5 | Stable Image Ultra |
|---|---|---|
| Category | Frontier | Image |
| Parameters | ~2.5T | ~12B |
| Context Window | 200K | N/A |
| Input Price | $0.15/1M tokens | $0.008/image/1M tokens |
| Output Price | $0.75/1M tokens | N/A/1M tokens |
| Latency | ~900ms | ~4s |
Choose Claude Opus 4.5 when:
- ✓ Creative writing
- ✓ Complex analysis
- ✓ Research
Superior creativity, Nuanced reasoning, Complex analysis
Choose Stable Image Ultra when:
- ✓ Premium photography
- ✓ Marketing
- ✓ Product shoots
Highest quality, Photorealistic, Professional
Verdict: Claude Opus 4.5 vs Stable Image Ultra
For cost efficiency, Stable Image Ultra wins at $0.008/image/1M input tokens. For speed, Stable Image Ultra is faster at ~4s. Claude Opus 4.5 excels at Creative writing while Stable Image Ultra is better for Premium photography. 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 4.5 costs $0.15/1M input tokens and $0.75/1M output tokens. Stable Image Ultra costs $0.008/image input and N/A output. Stable Image Ultra is 18.8x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Claude Opus 4.5 has a 200K context window with ~900ms latency. Stable Image Ultra offers N/A context at ~4s. Claude Opus 4.5 has the larger context window.
Best For
Claude Opus 4.5 (Frontier) is optimized for: Creative writing, Complex analysis, Research. Stable Image Ultra (Image) works best for: Premium photography, Marketing, Product shoots.
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 4.5
response_a = client.chat.completions.create(
model="claude-opus-4-5",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use Stable Image Ultra
response_b = client.chat.completions.create(
model="stable-image-ultra",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Claude Opus 4.5 or Stable Image Ultra?
Claude Opus 4.5 (Frontier, ~2.5T) offers Superior creativity. Stable Image Ultra (Image, ~12B) offers Highest quality. Choose Claude Opus 4.5 for Creative writing or Stable Image Ultra for Premium photography.
How much does Claude Opus 4.5 cost vs Stable Image Ultra?
Claude Opus 4.5: $0.15/1M input, $0.75/1M output. Stable Image Ultra: $0.008/image/1M input, N/A/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 4.5 and Stable Image Ultra 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.