Model Comparison
Reka Flash (Sep '24)
vs. Step 3.5 Flash 2603
Comparing 2 AI models · 0 benchmarks · Reka AI, StepFun
Recommended Pick
StStep 3.5 Flash 26036 metric winsStrongest on: Value, Input price, Output price
Best Value
Step 3.5 Flash 2603
100.0 value score
17.0 reasoning / $0.15/1M
Lowest Price
Step 3.5 Flash 2603
$0.10/1M input price
Best Reasoning
Step 3.5 Flash 2603
17.0 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
Step 3.5 Flash 2603 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Step 3.5 Flash 2603 is 2.0x cheaper on input tokens than Reka Flash (Sep '24).
Reasoning gap
Step 3.5 Flash 2603 leads Reka Flash (Sep '24) by 10.6 points on reasoning.
Top-pick rationale
Step 3.5 Flash 2603 wins 6 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.
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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Step 3.5 Flash 2603
StepFun
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?
Secure AI Chat made in Europe
Use Claude, ChatGPT, Gemini alongside with EU-Hosted Models like Deepseek, Qwen & Kimi.
EU-hosted inference
Servers in Germany & Finland. Designed to meet strict GDPR and ISO 27001 compliance requirements.
Full Comparison
| Metric | Re Reka Flash (Sep '24) | Top Pick St Step 3.5 Flash 2603 |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.20/1M | $0.10/1M |
| Output Cost | $0.80/1M | $0.30/1M |
| Blended (3:1) | $0.35/1M | $0.15/1M |
| Specifications | ||
| Organization | Reka AI | StepFun |
| Release Date | Oct 4, 2024 | Apr 2, 2026 |
| Performance & Speed | ||
| Throughput | — | 140.1 tok/s |
| TTFT | — | 3330ms |
| Latency | — | 17610ms |
| Composite Indices | ||
| Value Score | 16.1 | 100.0 |
| Reasoning Score | 6.4 | 17.0 |
| Intelligence | 6.4 | 17.0 |
Key Takeaways
Step 3.5 Flash 2603 offers the best value at $0.10/1M,making it ideal for high-volume applications and cost-conscious projects.
Step 3.5 Flash 2603 has the strongest reasoning profile with a 17.0 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
Step 3.5 Flash 2603
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
