StepFun Step 3.5 Flash vs Alexa+
Which one should you pick? Here's the full breakdown.
StepFun Step 3.5 Flash
StepFun's (China) agent-focused open-weight model -- Step 3.5 Flash launched 2026-02-01. 196B sparse MoE, ~11B active. Benchmarks slightly ahead of DeepSeek V3.2 at over 3x smaller total size. Step 3 (321B / 38B active, Apache 2.0) and Step3-VL-10B multimodal also in the family
Alexa+
Amazon's reborn consumer AI assistant -- rolls out to every Alexa device with memory, multi-turn agent tasks, and Fire TV navigation
| Category | StepFun Step 3.5 Flash | Alexa+ |
|---|---|---|
| Ease of Use | 6.0 | 9.5 |
| Output Quality | 8.0 | 7.0 |
| Value | 9.0 | 8.5 |
| Features | 8.0 | 8.0 |
| Overall | 7.8 | 8.3 |
Pricing Comparison
| Feature | StepFun Step 3.5 Flash | Alexa+ |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Which Should You Pick?
Pick StepFun Step 3.5 Flash if...
- ✓Higher output quality (8 vs 7)
Teams building agent systems on Chinese open-weight foundations who want something other than DeepSeek or Qwen, especially if agentic tool-use is the primary workload. Also good for Chinese-market products where StepFun's domestic tuning advantages matter. And for anyone looking to add diversity to their open-weight evaluation matrix beyond the top-3 Chinese labs.
Visit StepFun Step 3.5 FlashPick Alexa+ if...
- ✓Easier to use (9.5 vs 6)
Households already in the Amazon ecosystem (Prime, multiple Echo devices, Fire TV, Ring) -- especially families who use voice assistants for everyday tasks. If you're a Prime subscriber with Alexa hardware, Alexa+ is essentially a free major upgrade that lands where you already are.
Visit Alexa+Our Verdict
Alexa+ edges out StepFun Step 3.5 Flash with a 8.3 vs 7.8 overall score. Both are solid picks, but Alexa+ has the advantage in features.