DeepSeek: DeepSeek V4 Flash 0731 vs StepFun: Step 3.7 Flash
Based on weekly OpenRouter usage tracked by AI Tier List, DeepSeek: DeepSeek V4 Flash 0731 ranks #1 overall — ahead of StepFun: Step 3.7 Flash at #14. DeepSeek: DeepSeek V4 Flash 0731 is cheaper on input tokens at $0.14/1M vs $0.20/1M for StepFun: Step 3.7 Flash. DeepSeek: DeepSeek V4 Flash 0731 offers the larger context window at 1M tokens.
DeepSeek: DeepSeek V4 Flash 0731 vs StepFun: Step 3.7 Flash: which should you use?
Choose DeepSeek: DeepSeek V4 Flash 0731 if…
- It sees more real traffic — #1 overall on OpenRouter's weekly ranking, against #14 for StepFun: Step 3.7 Flash.
- Cheaper to read — $0.14 vs $0.20 per 1M input tokens, which is what dominates long-prompt and RAG workloads.
- Cheaper to write — $0.28 vs $1.15 per 1M output tokens, the line item that decides generation-heavy costs.
- Bigger context window — 1M vs 262K tokens.
- Higher Artificial Analysis intelligence index — 51.8 vs 30.9.
- Higher Artificial Analysis coding score — 69.1 vs 39.6.
- Higher Artificial Analysis agentic score — 48.4 vs 21.7.
- It is the newer model — released Jul 2026 against May 2026.
Choose StepFun: Step 3.7 Flash if…
- It accepts image, video input, which DeepSeek: DeepSeek V4 Flash 0731 does not.
Spec Comparison
| DeepSeek: DeepSeek V4 Flash 0731 | StepFun: Step 3.7 Flash | |
|---|---|---|
| Author | deepseek | stepfun |
| Input price (per 1M tokens) | $0.14 | $0.20 |
| Output price (per 1M tokens) | $0.28 | $1.15 |
| Context window | 1M | 262K |
| Input modalities | text | text, image, video |
| Output modalities | text | text |
| AA Intelligence | 51.8 | 30.9 |
| AA Coding | 69.1 | 39.6 |
| AA Agentic | 48.4 | 21.7 |
| Released | Jul 2026 | May 2026 |
What DeepSeek: DeepSeek V4 Flash 0731 and StepFun: Step 3.7 Flash actually cost to run
On a read-heavy job — 1M tokens in, 100K out — DeepSeek: DeepSeek V4 Flash 0731 costs $0.17 and StepFun: Step 3.7 Flash costs $0.32.
Flip the shape — 100K in, 1M out — and it becomes $0.29 for DeepSeek: DeepSeek V4 Flash 0731 versus $1.17 for StepFun: Step 3.7 Flash.
Both figures are the published per-token rates multiplied out; caching and batch discounts are not included.
Usage Rank by Task
| Task | DeepSeek: DeepSeek V4 Flash 0731 | StepFun: Step 3.7 Flash |
|---|---|---|
| Overall | #1 | #14 |
| Memory Extraction | #6 | #5 |
| Multi-step Planning | #2 | — |
| Tool Dispatch | #2 | #8 |
| Web Search | #4 | — |
| Agent Workflows | #5 | #8 |
| Classification & Tagging | #9 | — |
| Debugging | #3 | #9 |
| DevOps Config | #2 | #9 |
| File Read/Write | #3 | #8 |
| Frontend UI | #2 | #8 |
| Code Implementation | #3 | #10 |
| Repo Analysis | #3 | #9 |
| Code Review & Security | #3 | #10 |
| Shell Execution | #6 | #8 |
About DeepSeek: DeepSeek V4 Flash 0731 and StepFun: Step 3.7 Flash
DeepSeek: DeepSeek V4 Flash 0731
Built by deepseek · released Jul 2026 · 1M-token context
DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision is suited for coding, reasoning, and agent workflows....
StepFun: Step 3.7 Flash
Built by stepfun · released May 2026 · 262K-token context
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...
Get notified when DeepSeek: DeepSeek V4 Flash 0731 or StepFun: Step 3.7 Flash moves
Usage ranks and prices refresh weekly. We email you when they move — once a week, no spam.
FAQ
Which is better, DeepSeek: DeepSeek V4 Flash 0731 or StepFun: Step 3.7 Flash?
Based on weekly OpenRouter usage tracked by AI Tier List, DeepSeek: DeepSeek V4 Flash 0731 ranks #1 overall — ahead of StepFun: Step 3.7 Flash at #14. DeepSeek: DeepSeek V4 Flash 0731 is cheaper on input tokens at $0.14/1M vs $0.20/1M for StepFun: Step 3.7 Flash. DeepSeek: DeepSeek V4 Flash 0731 offers the larger context window at 1M tokens.
Which is cheaper, DeepSeek: DeepSeek V4 Flash 0731 or StepFun: Step 3.7 Flash?
DeepSeek: DeepSeek V4 Flash 0731 is cheaper at $0.14 per 1M input tokens. Output pricing: DeepSeek: DeepSeek V4 Flash 0731 $0.28, StepFun: Step 3.7 Flash $1.15.
Usage ranks are weekly data aggregated by OpenRouter. Prices are USD per 1M tokens.