Model Comparison
Solar Pro 4
vs. Claude Fable 5.2 (Xhigh, Default Fallback)
Comparing 2 AI models · 0 benchmarks · Upstage, Anthropic
Recommended Pick
UpSolar Pro 47 metric winsStrongest on: Value, Input price, Output price
Best Value
Solar Pro 4
100.0 value score
14.2 reasoning / $0.52/1M
Lowest Price
Solar Pro 4
$0.30/1M input price
Best Reasoning
Claude Fable 5.2 (Xhigh, Default Fallback)
62.2 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Solar Pro 4 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Solar Pro 4 is 26.7x cheaper on input tokens than Claude Fable 5.2 (Xhigh, Default Fallback).
Speed gap
Solar Pro 4 generates about 1.2x as many tokens per second as Claude Fable 5.2 (Xhigh, Default Fallback).
Reasoning gap
Claude Fable 5.2 (Xhigh, Default Fallback) leads Solar Pro 4 by 48.0 points on reasoning.
Top-pick rationale
Solar Pro 4 wins 7 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Pro 4
Upstage
TTFT
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Time
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tok/s
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Tokens
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Cost
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Claude Fable 5.2 (Xhigh, Default Fallback)
Anthropic
TTFT
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Time
—
tok/s
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Tokens
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Cost
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Which answer was more useful?
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Full Comparison
| Metric | Top Pick Up Solar Pro 4 | An Claude Fable 5.2 (Xhigh, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.30/1M | $8.00/1M |
| Output Cost | $1.20/1M | $40.00/1M |
| Blended (3:1) | $0.52/1M | $16.00/1M |
| Specifications | ||
| Organization | Upstage | Anthropic |
| Release Date | Aug 6, 2026 | Nov 9, 2026 |
| Performance & Speed | ||
| Throughput | 100.4 tok/s | 84.7 tok/s |
| TTFT | 1890ms | 97290ms |
| Latency | 21810ms | 97290ms |
| Composite Indices | ||
| Value Score | 100.0 | 14.4 |
| Reasoning Score | 14.2 | 62.2 |
| Intelligence | 14.2 | 62.2 |
Key Takeaways
Solar Pro 4 offers the best value at $0.30/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Fable 5.2 (Xhigh, Default Fallback) has the strongest reasoning profile with a 62.2 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Solar Pro 4
- Cost-sensitive applications
- High-volume processing
Claude Fable 5.2 (Xhigh, Default Fallback)
- Complex reasoning tasks
- Research & analysis
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