StepFun Step 3.5 Flash vs Opus Clip
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
Opus Clip
AI tool that automatically turns long videos into viral short clips for TikTok, Reels, and Shorts
| Category | StepFun Step 3.5 Flash | Opus Clip |
|---|---|---|
| Ease of Use | 6.0 | 9.0 |
| Output Quality | 8.0 | 8.0 |
| Value | 9.0 | 7.0 |
| Features | 8.0 | 8.0 |
| Overall | 7.8 | 8.0 |
Pricing Comparison
| Feature | StepFun Step 3.5 Flash | Opus Clip |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Which Should You Pick?
Pick StepFun Step 3.5 Flash if...
- ✓Better value for money (9/10)
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 Opus Clip if...
- ✓Easier to use (9 vs 6)
YouTubers and podcasters who want to repurpose long-form content into short clips for TikTok, Instagram Reels, and YouTube Shorts without manual editing.
Visit Opus ClipOur Verdict
StepFun Step 3.5 Flash and Opus Clip are extremely close overall. Your choice comes down to specific needs -- StepFun Step 3.5 Flash is better for 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, while Opus Clip works best for youtubers and podcasters who want to repurpose long-form content into short clips for tiktok, instagram reels, and youtube shorts without manual editing.