Model Comparison
Reka Flash (Sep '24)
vs. Solar Pro 2 (Reasoning)
Comparing 2 AI models · 12 benchmarks · Reka AI, Upstage
Recommended Pick
UpSolar Pro 2 (Reasoning)5 metric winsStrongest on: Input price, Output price, Reasoning
Lowest Price
Solar Pro 2 (Reasoning)
$0.00/1M input price
Best Reasoning
Solar Pro 2 (Reasoning)
53.3 reasoning score
Blends available reasoning benchmarks
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
Solar Pro 2 (Reasoning) is ∞x cheaper on input tokens than Reka Flash (Sep '24).
Reasoning gap
Solar Pro 2 (Reasoning) leads Reka Flash (Sep '24) by 23.9 points on reasoning.
Top-pick rationale
Solar Pro 2 (Reasoning) wins 5 measurable categories, including Input price, Output price, Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Reka Flash (Sep '24)
Reka AI
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 2 (Reasoning)
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 | Re Reka Flash (Sep '24) | Top Pick Up Solar Pro 2 (Reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.20/1M | $0.00/1M |
| Output Cost | $0.80/1M | $0.00/1M |
| Blended (3:1) | $0.35/1M | — |
| Specifications | ||
| Organization | Reka AI | Upstage |
| Release Date | Oct 4, 2024 | Jul 9, 2025 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 29.4 | 53.3 |
| Intelligence | 6.0 | 8.8 |
| Math | — | 61.3 |
| Standard Benchmarks | ||
| GPQA | — | 68.7% |
| MMLU Pro | — | 80.5% |
| HLE | — | 7.4% |
| LiveCodeBench | — | 61.6% |
| MATH 500 | 52.9% | 96.7% |
| AIME 2025 | — | 61.3% |
| AIME (Original) | — | 69.0% |
| SciCode | — | 30.2% |
| LCR | — | 0.0% |
| IFBench | — | 37.1% |
| TAU-bench v2 | — | 28.1% |
| TerminalBench Hard | — | 3.0% |
Key Takeaways
Solar Pro 2 (Reasoning) offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Solar Pro 2 (Reasoning) has the strongest reasoning profile with a 53.3 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
Reka Flash (Sep '24)
- General-purpose AI
- Versatile applications
Solar Pro 2 (Reasoning)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
