Model Comparison
Solar Pro 4
vs. GPT-6 Astra (max)
Comparing 2 AI models · 0 benchmarks · Upstage, OpenAI
Recommended Pick
UpSolar Pro 47 metric winsStrongest on: Value, Input price, Output price
Best Value
Solar Pro 4
100.0 value score
32.7 reasoning / $0.52/1M
Lowest Price
Solar Pro 4
$0.30/1M input price
Best Reasoning
GPT-6 Astra (max)
54.7 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-6 Astra (max)
76.9 coding index
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 33.3x cheaper on input tokens than GPT-6 Astra (max).
Speed gap
Solar Pro 4 generates about 1.1x as many tokens per second as GPT-6 Astra (max).
Reasoning gap
GPT-6 Astra (max) leads Solar Pro 4 by 22.0 points on reasoning.
Coding gap
GPT-6 Astra (max) leads Solar Pro 4 by 24.2 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 4
Upstage
TTFT
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tok/s
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Tokens
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Cost
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GPT-6 Astra (max)
OpenAI
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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OpenAI-compatible inference
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Full Comparison
| Metric | Top Pick Up Solar Pro 4 | Op GPT-6 Astra (max) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.30/1M | $10.00/1M |
| Output Cost | $1.20/1M | $50.00/1M |
| Blended (3:1) | $0.52/1M | $20.00/1M |
| Specifications | ||
| Organization | Upstage | OpenAI |
| Release Date | Aug 6, 2026 | Sep 3, 2026 |
| Performance & Speed | ||
| Throughput | 70.1 tok/s | 62.5 tok/s |
| TTFT | 1980ms | 250180ms |
| Latency | 30520ms | 250180ms |
| Composite Indices | ||
| Value Score | 100.0 | 4.4 |
| Reasoning Score | 32.7 | 54.7 |
| Intelligence | 32.7 | 54.7 |
| Coding | 52.7 | 76.9 |
Key Takeaways
Solar Pro 4 offers the best value at $0.30/1M,making it ideal for high-volume applications and cost-conscious projects.
GPT-6 Astra (max) has the strongest reasoning profile with a 54.7 reasoning score,combining the available reasoning-heavy benchmarks.
GPT-6 Astra (max) reaches a 76.9 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 4
- Cost-sensitive applications
- High-volume processing
GPT-6 Astra (max)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
