Model Comparison
Solar Pro 3
vs. Solar Pro 4
Comparing 2 AI models · 7 benchmarks · Upstage
Recommended Pick
UpSolar Pro 47 metric winsStrongest on: Reasoning, Intelligence, Coding
Best Value
Solar Pro 3
100.0 value score
32.4 reasoning / $0.26/1M
Lowest Price
Solar Pro 3
$0.15/1M input price
Best Reasoning
Solar Pro 4
53.3 reasoning score
Blends available reasoning benchmarks
Best for Coding
Solar Pro 4
52.7 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
Solar Pro 3 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Solar Pro 3 is 2.0x cheaper on input tokens than Solar Pro 4.
Speed gap
Solar Pro 3 generates about 2.0x as many tokens per second as Solar Pro 4.
Reasoning gap
Solar Pro 4 leads Solar Pro 3 by 20.9 points on reasoning.
Coding gap
Solar Pro 4 leads Solar Pro 3 by 36.5 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Pro 3
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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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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Which answer was more useful?
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Full Comparison
| Metric | Up Solar Pro 3 | Top Pick Up Solar Pro 4 |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.15/1M | $0.30/1M |
| Output Cost | $0.60/1M | $1.20/1M |
| Blended (3:1) | $0.26/1M | $0.52/1M |
| Specifications | ||
| Organization | Upstage | Upstage |
| Release Date | Apr 6, 2026 | Aug 6, 2026 |
| Performance & Speed | ||
| Throughput | 133.3 tok/s | 66.3 tok/s |
| TTFT | 1130ms | 1239ms |
| Latency | 16139ms | 31422ms |
| Composite Indices | ||
| Value Score | 100.0 | 82.3 |
| Reasoning Score | 32.4 | 53.3 |
| Intelligence | 14.5 | 41.6 |
| Coding | 16.2 | 52.7 |
| Standard Benchmarks | ||
| GPQA | 72.4% | 89.1% |
| HLE | 10.3% | 29.2% |
| SciCode | 24.7% | 43.6% |
| LCR | 31.0% | 70.7% |
| IFBench | 71.2% | — |
| TAU-bench v2 | 86.3% | — |
| TerminalBench Hard | 7.6% | — |
Key Takeaways
Solar Pro 3 offers the best value at $0.15/1M,making it ideal for high-volume applications and cost-conscious projects.
Solar Pro 4 has the strongest reasoning profile with a 53.3 reasoning score,combining the available reasoning-heavy benchmarks.
Solar Pro 4 reaches a 52.7 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Solar Pro 3
- Cost-sensitive applications
- High-volume processing
Solar Pro 4
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
