Model Comparison
Reka Flash (Sep '24)
vs. Solar Open 100B (Reasoning)
Comparing 2 AI models · 8 benchmarks · Reka AI, Upstage
Recommended Pick
Up Solar Open 100B (Reasoning) 5 metric wins Strongest on: Input price, Output price, TTFT
Lowest Price
Solar Open 100B (Reasoning)
$0.00/1M input price
Best Reasoning
Reka Flash (Sep '24)
32.4 reasoning score
Blends available reasoning benchmarks
Best for Coding
Solar Open 100B (Reasoning)
10.5 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
Solar Open 100B (Reasoning) is ∞x cheaper on input tokens than Reka Flash (Sep '24).
Reasoning gap
Reka Flash (Sep '24) leads Solar Open 100B (Reasoning) by 0.2 points on reasoning.
Top-pick rationale
Solar Open 100B (Reasoning) wins 5 measurable categories, including Input price, Output price, TTFT, Latency.
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 Open 100B (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?
Full Comparison
| Metric | Re Reka Flash (Sep '24) | Top Pick Up Solar Open 100B (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 | Dec 17, 2025 |
| Performance & Speed | ||
| Throughput | 85.9 tok/s | — |
| TTFT | 1779ms | — |
| Latency | 1779ms | — |
| Composite Indices | ||
| Value Score | 100.0 | — |
| Reasoning Score | 32.4 | 32.2 |
| Intelligence | 12.0 | 21.7 |
| Coding | — | 10.5 |
| Standard Benchmarks | ||
| GPQA | — | 65.7% |
| HLE | — | 9.2% |
| MATH 500 | 52.9% | — |
| SciCode | — | 26.9% |
| LCR | — | 36.0% |
| IFBench | — | 57.7% |
| TAU-bench v2 | — | 48.2% |
| TerminalBench Hard | — | 2.3% |
Key Takeaways
Solar Open 100B (Reasoning) offers the best value at $0.00/1M, making it ideal for high-volume applications and cost-conscious projects.
Reka Flash (Sep '24) has the strongest reasoning profile with a 32.4 reasoning score, combining the available reasoning-heavy benchmarks.
Solar Open 100B (Reasoning) reaches a 10.5 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
Reka Flash (Sep '24)
- Complex reasoning tasks
- Research & analysis
Solar Open 100B (Reasoning)
- Cost-sensitive applications
- High-volume processing
- Code generation
- Software development
